<SEC-DOCUMENT>0001144204-14-062757.txt : 20141024
<SEC-HEADER>0001144204-14-062757.hdr.sgml : 20141024
<ACCEPTANCE-DATETIME>20141024142854
ACCESSION NUMBER: 0001144204-14-062757
CONFORMED SUBMISSION TYPE: SC 13D
PUBLIC DOCUMENT COUNT: 7
FILED AS OF DATE: 20141024
DATE AS OF CHANGE: 20141024
GROUP MEMBERS: COSTAR MIDSTREAM ENERGY LLC
GROUP MEMBERS: ENERGY SPECTRUM CAPITAL VI LP
GROUP MEMBERS: ENERGY SPECTRUM PARTNERS VI LP
GROUP MEMBERS: ENERGY SPECTRUM VI LLC
SUBJECT COMPANY:
COMPANY DATA:
COMPANY CONFORMED NAME: American Midstream Partners, LP
CENTRAL INDEX KEY: 0001513965
STANDARD INDUSTRIAL CLASSIFICATION: NATURAL GAS TRANSMISSION [4922]
IRS NUMBER: 270855785
STATE OF INCORPORATION: DE
FISCAL YEAR END: 1231
FILING VALUES:
FORM TYPE: SC 13D
SEC ACT: 1934 Act
SEC FILE NUMBER: 005-86360
FILM NUMBER: 141172042
BUSINESS ADDRESS:
STREET 1: 1400 16TH STREET
STREET 2: SUITE 310
CITY: DENVER
STATE: CO
ZIP: 80202
BUSINESS PHONE: (720) 457-6060
MAIL ADDRESS:
STREET 1: 1400 16TH STREET
STREET 2: SUITE 310
CITY: DENVER
STATE: CO
ZIP: 80202
FILED BY:
COMPANY DATA:
COMPANY CONFORMED NAME: Energy Spectrum Securities Corp
CENTRAL INDEX KEY: 0001526581
IRS NUMBER: 752810665
STATE OF INCORPORATION: TX
FISCAL YEAR END: 1231
FILING VALUES:
FORM TYPE: SC 13D
BUSINESS ADDRESS:
STREET 1: 5956 SHERRY LN STE 900
CITY: DALLAS
STATE: TX
ZIP: 75225
BUSINESS PHONE: 214-987-6100
MAIL ADDRESS:
STREET 1: 5956 SHERRY LN STE 900
CITY: DALLAS
STATE: TX
ZIP: 75225
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D
<SEQUENCE>1
<FILENAME>v391998_sc13d.htm
<DESCRIPTION>SC 13D
<TEXT>
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<TITLE></TITLE>
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<P STYLE="margin: 0"> </P>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">SECURITIES AND EXCHANGE COMMISSION</P>
<P STYLE="margin-top: 0pt; text-align: center; margin-bottom: 0pt"><B>Washington, D.C. 20549</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SCHEDULE 13D</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(Rule 13d-101)</B></P>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">INFORMATION TO BE INCLUDED IN STATEMENTS
FILED PURSUANT TO RULE 13d-1(a)</P>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">AND AMENDMENTS THERETO FILED PURSUANT
TO RULE</P>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">13d-2(a)</P>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 100%; border-bottom: Black 1pt solid; font-size: 10pt; text-align: center"><FONT STYLE="font: 10pt Times New Roman, Times, Serif"><B>American
Midstream Partners, LP</B></FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">(Name of Issuer)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt"> </FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-bottom: Black 1pt solid; font-size: 10pt; text-align: center; font-weight: bold">Common Units</TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">(Title of Class of Securities)</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" ALIGN="CENTER" STYLE="font: 10pt Times New Roman, Times, Serif; width: 50%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 100%; border-bottom: Black 1pt solid; font-size: 10pt; text-align: center; font-weight: bold">02752P100</TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">(CUSIP Number)</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">James P. Benson, 5956 Sherry Lane,
Suite 900</P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 100%; border-bottom: Black 1pt solid; font-size: 10pt; text-align: center; font-weight: bold">Dallas, TX 75225, (214) 987-6100</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Name, Address and Telephone Number of Person</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Authorized to Receive Notices and Communications)</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" ALIGN="CENTER" STYLE="font: 10pt Times New Roman, Times, Serif; width: 50%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 100%; border-bottom: Black 1pt solid; font-size: 10pt; text-align: center; font-weight: bold">October 14, 2014</TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">(Date of Event which Requires Filing</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">of this Statement)</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">If the filing person has previously filed
a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because
of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box <FONT STYLE="font-family: Wingdings 2">£</FONT><FONT STYLE="font-family: Wingdings 3"></FONT>.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">The information required on the remainder
of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of
1934 (the “Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other
provisions of the Act (however, see the Notes).</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
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<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 33%; font-size: 10pt"><FONT STYLE="font-size: 10pt">CUSIP: 02752P100</FONT></TD>
<TD STYLE="width: 34%; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">13D</FONT></TD>
<TD STYLE="width: 33%; font-size: 10pt"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: center"> </TD>
<TD STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">2 of 11</FONT></TD>
<TD STYLE="font-size: 10pt; text-align: center"> </TD></TR>
</TABLE>
<P STYLE="font: 10pt Courier; margin: 0pt 0"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="border: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; font-weight: bold"><FONT STYLE="font-size: 12pt">1</FONT></TD>
<TD COLSPAN="2" STYLE="border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><FONT STYLE="font-variant: small-caps">names
of reporting persons</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">Energy Spectrum Securities Corporation </P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; font-weight: bold"><FONT STYLE="font-size: 12pt">2</FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">check the appropriate
box if a member of a group</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><FONT STYLE="font-variant: small-caps">(A) <FONT STYLE="font-family: Wingdings">¨</FONT></FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><FONT STYLE="font-variant: small-caps">(B) <FONT STYLE="font-family: Wingdings">¨</FONT></FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"> </P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>3</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">sec use only</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps"> </FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>4</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">source of funds</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">OO</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="width: 7%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>5</B></FONT></TD>
<TD STYLE="width: 88%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-size: 10pt; font-variant: small-caps">check if disclosure of legal proceedings is required pursuant to items 2(d) or 2(e)</FONT><BR>
</TD>
<TD STYLE="width: 5%; border-bottom: Black 1pt solid; padding: 0; border-right: Black 1pt solid; font-size: 10pt; text-align: left; vertical-align: top"><FONT STYLE="font-family: Wingdings; font-variant: small-caps">¨</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>6</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">citizenship or place
of organization</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">Texas</P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD ROWSPAN="4" NOWRAP STYLE="width: 15%; border: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt; font-variant: small-caps">number of</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">shares</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">beneficially</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">owned by</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">each</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">reporting</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">person</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">with</FONT></TD>
<TD STYLE="width: 7%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; font-weight: bold"><FONT STYLE="font-size: 12pt">7</FONT></TD>
<TD STYLE="width: 78%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">sole voting power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">6,231,188</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>8</B></FONT></TD>
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">shared voting power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">237,341</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>9</B></FONT></TD>
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">sole dispositive power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">6,231,188</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>10</B></FONT></TD>
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">shared dispositive power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">237,341</FONT></P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>11</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">aggregate amount beneficially
owned by each reporting person</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">6,468,529</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="width: 7%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>12</B></FONT></TD>
<TD STYLE="width: 88%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-size: 10pt; font-variant: small-caps">check box if the aggregate amount in row (11) excludes certain shares</FONT><BR>
</TD>
<TD STYLE="width: 5%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-top: 0; padding-left: 0; font-size: 10pt; text-align: left"><FONT STYLE="font-family: Wingdings; font-variant: small-caps">¨</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>13</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">percent of class represented
by amount in row (11)</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">35.9%*</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>14</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">type of reporting person</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">CO</FONT></P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">* Based
on the 18,036,484 Common Units of American Midstream Partners, LP that would be outstanding if the Common Units acquired by Energy
Spectrum Partners VI LP’s and Costar Midstream Energy LLC’s identified in this filing were added to the amount of Common
Units identified in the Issuer’s most recent 10-Q filed August 11, 2014.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
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<TD STYLE="width: 33%; font-size: 10pt"><FONT STYLE="font-size: 10pt">CUSIP: 02752P100</FONT></TD>
<TD STYLE="width: 34%; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">13D</FONT></TD>
<TD STYLE="width: 33%; font-size: 10pt"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: center"> </TD>
<TD STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">3 of 11</FONT></TD>
<TD STYLE="font-size: 10pt; text-align: center"> </TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="border: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; font-weight: bold"><FONT STYLE="font-size: 12pt">1</FONT></TD>
<TD COLSPAN="2" STYLE="border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><FONT STYLE="font-variant: small-caps">names
of reporting persons</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">Energy Spectrum VI LLC</P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; font-weight: bold"><FONT STYLE="font-size: 12pt">2</FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">check the appropriate
box if a member of a group</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><FONT STYLE="font-variant: small-caps">(A) <FONT STYLE="font-family: Wingdings">¨</FONT></FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><FONT STYLE="font-variant: small-caps">(B) <FONT STYLE="font-family: Wingdings">¨</FONT></FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"> </P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>3</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">sec use only</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps"> </FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>4</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">source of funds</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">OO</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="width: 7%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>5</B></FONT></TD>
<TD STYLE="width: 88%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-size: 10pt; font-variant: small-caps">check if disclosure of legal proceedings is required pursuant to items 2(d) or 2(e)</FONT><BR>
</TD>
<TD STYLE="width: 5%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-top: 0; padding-left: 0; font-size: 10pt; text-align: left; padding-right: 0"><FONT STYLE="font-family: Wingdings; font-variant: small-caps">¨</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>6</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">citizenship or place
of organization</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">Texas</P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD ROWSPAN="4" STYLE="width: 15%; border: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt; font-variant: small-caps">number of</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">shares</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">beneficially</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">owned by</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">each</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">reporting</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">person</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">with</FONT></TD>
<TD STYLE="width: 7%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; font-weight: bold"><FONT STYLE="font-size: 12pt">7</FONT></TD>
<TD STYLE="width: 78%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">sole voting power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">6,231,188</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>8</B></FONT></TD>
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">shared voting power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">237,341</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>9</B></FONT></TD>
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">sole dispositive power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">6,231,188</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>10</B></FONT></TD>
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">shared dispositive power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">237,341</FONT></P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>11</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">aggregate amount beneficially
owned by each reporting person</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">6,468,529</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="width: 7%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>12</B></FONT></TD>
<TD STYLE="width: 88%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-size: 10pt; font-variant: small-caps">check box if the aggregate amount in row (11) excludes certain shares	</FONT><BR>
</TD>
<TD STYLE="width: 5%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-top: 0; padding-left: 0; font-size: 10pt; text-align: left"><FONT STYLE="font-family: Wingdings; font-variant: small-caps">¨</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>13</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">percent of class represented
by amount in row (11)</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">35.9%*</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>14</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">type of reporting person</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">OO</FONT></P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left">* Based
on the 18,036,484 Common Units of American Midstream Partners, LP that would be outstanding if the Common Units acquired by Energy
Spectrum Partners VI LP’s and Costar Midstream Energy LLC’s identified in this filing were added to the amount of Common
Units identified in the Issuer’s most recent 10-Q filed August 11, 2014.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
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<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"></P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 33%; font-size: 10pt"><FONT STYLE="font-size: 10pt">CUSIP: 02752P100</FONT></TD>
<TD STYLE="width: 34%; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">13D</FONT></TD>
<TD STYLE="width: 33%; font-size: 10pt"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: center"> </TD>
<TD STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">4 of 11</FONT></TD>
<TD STYLE="font-size: 10pt; text-align: center"> </TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="border: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; font-weight: bold"><FONT STYLE="font-size: 12pt">1</FONT></TD>
<TD COLSPAN="2" STYLE="border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><FONT STYLE="font-variant: small-caps">names
of reporting persons</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">Energy Spectrum Capital VI LP</P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; font-weight: bold"><FONT STYLE="font-size: 12pt">2</FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">check the appropriate
box if a member of a group</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><FONT STYLE="font-variant: small-caps">(A) <FONT STYLE="font-family: Wingdings">¨</FONT></FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><FONT STYLE="font-variant: small-caps">(B) <FONT STYLE="font-family: Wingdings">¨</FONT></FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"> </P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>3</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">sec use only</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps"> </FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>4</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">source of funds</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">OO</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="width: 7%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>5</B></FONT></TD>
<TD STYLE="width: 88%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-size: 10pt; font-variant: small-caps">check if disclosure of legal proceedings is required pursuant to items 2(d) or 2(e)</FONT><BR>
</TD>
<TD STYLE="width: 5%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-top: 0; padding-left: 0; font-size: 10pt; text-align: left"><FONT STYLE="font-family: Wingdings; font-variant: small-caps">¨</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>6</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">citizenship or place
of organization</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">Delaware</P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD ROWSPAN="4" STYLE="width: 15%; border: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt; font-variant: small-caps">number of</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">shares</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">beneficially</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">owned by</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">each</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">reporting</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">person</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">with</FONT></TD>
<TD STYLE="width: 7%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; font-weight: bold"><FONT STYLE="font-size: 12pt">7</FONT></TD>
<TD STYLE="width: 78%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">sole voting power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">6,231,188</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>8</B></FONT></TD>
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">shared voting power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">237,341</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>9</B></FONT></TD>
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">sole dispositive power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">6,231,188</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>10</B></FONT></TD>
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">shared dispositive power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">237,341</FONT></P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>11</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">aggregate amount beneficially
owned by each reporting person</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">6,468,529</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="width: 7%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>12</B></FONT></TD>
<TD STYLE="width: 88%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-size: 10pt; font-variant: small-caps">check box if the aggregate amount in row (11) excludes certain shares</FONT><BR>
</TD>
<TD STYLE="width: 5%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-top: 0; padding-left: 0; font-size: 10pt; text-align: left"><FONT STYLE="font-family: Wingdings; font-variant: small-caps">¨</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>13</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">percent of class represented
by amount in row (11)</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">35.9%*</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>14</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">type of reporting person</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">PN</FONT></P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left">* Based
on the 18,036,484 Common Units of American Midstream Partners, LP that would be outstanding if the Common Units acquired by Energy
Spectrum Partners VI LP’s and Costar Midstream Energy LLC’s identified in this filing were added to the amount of Common
Units identified in the Issuer’s most recent 10-Q filed August 11, 2014.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
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<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 33%; font-size: 10pt"><FONT STYLE="font-size: 10pt">CUSIP: 02752P100</FONT></TD>
<TD STYLE="width: 34%; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">13D</FONT></TD>
<TD STYLE="width: 33%; font-size: 10pt"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: center"> </TD>
<TD STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">5 of 11</FONT></TD>
<TD STYLE="font-size: 10pt; text-align: center"> </TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="border: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; font-weight: bold"><FONT STYLE="font-size: 12pt">1</FONT></TD>
<TD COLSPAN="2" STYLE="border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><FONT STYLE="font-variant: small-caps">names
of reporting persons</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">Energy Spectrum Partners VI LP</P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; font-weight: bold"><FONT STYLE="font-size: 12pt">2</FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">check the appropriate
box if a member of a group</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><FONT STYLE="font-variant: small-caps">(A) <FONT STYLE="font-family: Wingdings">¨</FONT></FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><FONT STYLE="font-variant: small-caps">(B) <FONT STYLE="font-family: Wingdings">¨</FONT></FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"> </P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>3</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">sec use only</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps"> </FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>4</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">source of funds</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">OO</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="width: 7%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>5</B></FONT></TD>
<TD STYLE="width: 88%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-size: 10pt; font-variant: small-caps">check if disclosure of legal proceedings is required pursuant to items 2(d) or 2(e)</FONT><BR>
</TD>
<TD STYLE="width: 5%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-top: 0; padding-left: 0; font-size: 10pt; text-align: left; padding-right: 0"><FONT STYLE="font-family: Wingdings; font-variant: small-caps">¨</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>6</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">citizenship or place
of organization</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">Delaware</P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD ROWSPAN="4" STYLE="width: 15%; border: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt; font-variant: small-caps">number of</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">shares</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">beneficially</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">owned by</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">each</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">reporting</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">person</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">with</FONT></TD>
<TD STYLE="width: 7%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; font-weight: bold"><FONT STYLE="font-size: 12pt">7</FONT></TD>
<TD STYLE="width: 78%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">sole voting power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">6,231,188</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>8</B></FONT></TD>
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">shared voting power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">237,341</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>9</B></FONT></TD>
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">sole dispositive power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">6,231,188</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>10</B></FONT></TD>
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">shared dispositive power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">237,341</FONT></P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>11</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">aggregate amount beneficially
owned by each reporting person</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">6,468,529</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="width: 7%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>12</B></FONT></TD>
<TD STYLE="width: 88%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-size: 10pt; font-variant: small-caps">check box if the aggregate amount in row (11) excludes certain shares</FONT><BR>
</TD>
<TD STYLE="width: 5%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-top: 0; padding-left: 0; font-size: 10pt; text-align: left"><FONT STYLE="font-family: Wingdings; font-variant: small-caps">¨</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>13</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">percent of class represented
by amount in row (11)</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">35.9%*</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>14</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">type of reporting person</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">PN</FONT></P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">* Based
on the 18,036,484 Common Units of American Midstream Partners, LP that would be outstanding if the Common Units acquired by Energy
Spectrum Partners VI LP’s and Costar Midstream Energy LLC’s identified in this filing were added to the amount of Common
Units identified in the Issuer’s most recent 10-Q filed August 11, 2014.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
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<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 33%; font-size: 10pt"><FONT STYLE="font-size: 10pt">CUSIP: 02752P100</FONT></TD>
<TD STYLE="width: 34%; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">13D</FONT></TD>
<TD STYLE="width: 33%; font-size: 10pt"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: center"> </TD>
<TD STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">6 of 11</FONT></TD>
<TD STYLE="font-size: 10pt; text-align: center"> </TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="border: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; font-weight: bold"><FONT STYLE="font-size: 12pt">1</FONT></TD>
<TD COLSPAN="2" STYLE="border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><FONT STYLE="font-variant: small-caps">names
of reporting persons</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">Costar Midstream Energy LLC</P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; font-weight: bold"><FONT STYLE="font-size: 12pt">2</FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">check the appropriate
box if a member of a group</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><FONT STYLE="font-variant: small-caps">(A) <FONT STYLE="font-family: Wingdings">¨</FONT></FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><FONT STYLE="font-variant: small-caps">(B) <FONT STYLE="font-family: Wingdings">¨</FONT></FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"> </P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>3</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">sec use only</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps"> </FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>4</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">source of funds</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">OO</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="width: 7%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>5</B></FONT></TD>
<TD STYLE="width: 88%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-size: 10pt; font-variant: small-caps">check if disclosure of legal proceedings is required pursuant to items 2(d) or 2(e)</FONT><BR>
</TD>
<TD STYLE="width: 5%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-top: 0; padding-left: 0; font-size: 10pt; text-align: left"><FONT STYLE="font-family: Wingdings; font-variant: small-caps">¨</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>6</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">citizenship or place
of organization</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">Texas</P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD ROWSPAN="4" STYLE="width: 15%; border: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt; font-variant: small-caps">number of</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">shares</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">beneficially</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">owned by</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">each</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">reporting</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">person</FONT><BR>
<FONT STYLE="font-size: 10pt; font-variant: small-caps">with</FONT></TD>
<TD STYLE="width: 7%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt; font-weight: bold"><FONT STYLE="font-size: 12pt">7</FONT></TD>
<TD STYLE="width: 78%; border-top: Black 1pt solid; border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">sole voting power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">424,402</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>8</B></FONT></TD>
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">shared voting power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">237,341</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>9</B></FONT></TD>
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">sole dispositive power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">424,402</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>10</B></FONT></TD>
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">shared dispositive power</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">237,341</FONT></P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>11</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">aggregate amount beneficially
owned by each reporting person</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">661,743</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="width: 7%; border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>12</B></FONT></TD>
<TD STYLE="width: 88%; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 10pt"><FONT STYLE="font-size: 10pt; font-variant: small-caps">check box if the aggregate amount in row (11) excludes certain shares</FONT><BR>
</TD>
<TD STYLE="width: 5%; border-bottom: Black 1pt solid; border-right: Black 1pt solid; padding-top: 0; padding-left: 0; font-size: 10pt; text-align: left"><FONT STYLE="font-family: Wingdings; font-variant: small-caps">¨</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>13</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">percent of class represented
by amount in row (11)</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">3.7%*</FONT></P></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; border-left: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; font-size: 12pt"><FONT STYLE="font-size: 12pt"><B>14</B></FONT></TD>
<TD COLSPAN="2" STYLE="border-right: Black 1pt solid; border-bottom: Black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps">type of reporting person</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in"><FONT STYLE="font-variant: small-caps">OO</FONT></P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><FONT STYLE="font-size: 10pt">* Based
on the 18,036,484 Common Units of American Midstream Partners, LP that would be outstanding if the Common Units acquired by Energy
Spectrum Partners VI LP’s and Costar Midstream Energy LLC’s identified in this filing were added to the amount of Common
Units identified in the Issuer’s most recent 10-Q filed August 11, 2014.</FONT> <FONT STYLE="font-size: 10pt"> </FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
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<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 33%; font-size: 10pt"><FONT STYLE="font-size: 10pt">CUSIP: 02752P100</FONT></TD>
<TD STYLE="width: 34%; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">13D</FONT></TD>
<TD STYLE="width: 33%; font-size: 10pt"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: center"> </TD>
<TD STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">7 of 11</FONT></TD>
<TD STYLE="font-size: 10pt; text-align: center"> </TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1in; text-align: left"><B>ITEM 1.</B></TD><TD STYLE="text-align: justify"><B>SECURITY AND ISSUER.</B></TD>
</TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">This statement on
Schedule 13D relates to common units (“Common Units”) of American Midstream Partners, LP (the “Issuer”).
The Issuer’s principal executive offices are located at 1400 16th Street, Suite 310, Denver, CO 80202.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1in"><B>ITEM 2.</B></TD><TD STYLE="text-align: justify"><B>IDENTITY AND BACKGROUND.</B></TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">The persons filing
this statement are Energy Spectrum Securities Corporation, a Texas corporation whose principal businesses are providing, through
affiliates, private equity capital to businesses engaged in the exploration, development, production, gathering, transportation,
processing, treatment, and storage of oil and natural gas and related hydrocarbons and the provision of financial advisory services
to energy industry participants (“ESSC”), Energy Spectrum VI, LLC, a Texas limited liability company whose principal
business is serving as the general partner of ESCLP (“ESLLC”), Energy Spectrum Capital VI LP, a Delaware limited partnership
whose principal business is serving as the general partner of ESP (“ESCLP”), Energy Spectrum Partners VI LP, a Delaware
limited partnership whose principal business is providing private equity capital to businesses engaged in the gathering, transportation,
processing, treatment, and storage of oil and natural gas and related hydrocarbons (“ESP”, and together with ESSC,
ESLLC, and ESCLP, the “Energy Spectrum Entities”), and Costar Midstream Energy LLC whose principal business is actively
managing the interest in the acquired companies of the Issuer (“CME” and collectively with the Energy Spectrum Entities,
the “Reporting Persons”)<B>.</B> The principal business address of the Energy Spectrum Entities is 5956 Sherry Lane,
Suite 900, Dallas, TX 75225. The principal business address of CME is 8150 North Central Expressway, Suite 635, Dallas, TX 75206.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">ESSC is the sole member
of ESLLC, which is the sole general partner of ESCLP, which is the sole general partner of ESP. The directors and executive officers
of ESSC are Thomas O. Whitener, Leland B. White, James P. Benson, and James W. Spann (the “Directors”). Thomas O. Whitener,
Leland B. White, James P. Benson, and James W. Spann serve as the managers of ESLLC (the “ESLLC Managers”) and Kevin
Sullivan and James P. Benson serve as the managers of CME (the “CME Managers” and together with the Directors and the
ESLLC Managers, the “Management Persons”). The business address of the Directors and the ESLLC Managers is the same
as that of ESSC. The principal business address of Kevin Sullivan is the same as that of CME. The principal occupation of each
of the Directors is serving as Directors and officers of ESSC and running its portfolio companies and partnerships. The principal
occupation of Kevin Sullivan is acting as an officer of Costar Midstream, L.L.C., a Texas limited liability company whose principal
business address is the same as the Issuer’s (“Costar”)</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">The Reporting Persons
and the Management Persons, during the last five years, have not been convicted in a criminal proceeding (excluding traffic violations
or similar misdemeanors).<B> </B>The Reporting Persons and each of the Management Persons, during the last five years, have not
been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction or subject to a judgment, decree
or final order enjoining future violations of, or prohibiting or mandating activities subject to federal or state securities laws
or finding any violation with respect to such laws. Each of the Management Persons is a citizen of the United States of America.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"></P>
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<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 33%; font-size: 10pt"><FONT STYLE="font-size: 10pt">CUSIP: 02752P100</FONT></TD>
<TD STYLE="width: 34%; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">13D</FONT></TD>
<TD STYLE="width: 33%; font-size: 10pt"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: center"> </TD>
<TD STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">8 of 11</FONT></TD>
<TD STYLE="font-size: 10pt; text-align: center"> </TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><B> </B></P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1in"><B>ITEM 3.</B></TD><TD STYLE="text-align: justify"><B>SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.</B></TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">The 6,892,931 Common
Units (the “Subject Units”) reported on this Schedule 13D are owned directly by ESP and CME and were acquired by each
of ESP and CME pursuant to the terms of that certain Purchase and Sale Agreement (the “Purchase Agreement”) dated October
13, 2014 by and among ESP, CME and American Midstream, LLC, a Delaware limited liability company and wholly owned subsidiary of
the Issuer (“AMID”), as part of the consideration received by ESP and CME in exchange for their sale of 100% of the
membership interest of Costar to AMID. Under the terms of the Purchase Agreement and pursuant to the terms of that certain Irrevocable
Letter, dated October 14, 2014 signed by the Issuer directing its transfer agent to issue the Subject Units to ESP and CME, directly
and in escrow, on November 8, 2014 (the “Irrevocable Letter”), ESP and CME obtained beneficial ownership of the Subject
Units as of October 14, 2014 and will obtain record ownership of the Subject Units on November 8, 2014 upon issuance thereof pursuant
to the terms of the Irrevocable Letter. In connection with the consummation of the transactions contemplated in the Purchase Agreement,
ESP, CME and the Issuer entered into that certain Securities Agreement dated as of October 14, 2014 by and among ESP, CME, and
the Issuer (the “Securities Agreement”), pursuant to which, among other things, the Subject Units are subject to restrictions
on sale by ESP and CME. Copies of the Securities Agreement and the Purchase Agreement are attached hereto as Exhibits 99.2 and
99.5, respectively and incorporated herein by reference. 1,379,311 of the Subject Units will, upon issuance on November 8, 2014,
be the subject of an escrow for the satisfaction of certain indemnity claims under the Purchase Agreement, all pursuant to the
terms of an Escrow Agreement, dated October 14, 2014 by and among AMID, ESP, CME, and Wells Fargo Bank National Association, a
copy of which is attached hereto as Exhibit 99.4 and incorporated herein by reference. The Subject Units held pursuant to the Escrow
Agreement may be returned to the Issuer in the case of indemnification claims timely made by AMID or released to ESP and CME in
the absence of such claims. Subject Units held pursuant to the Escrow Agreement will be held of record by ESP or CME, respectively
pending return, if any, to the Issuer in connection with timely indemnification claims.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1in"><B>ITEM 4.</B></TD><TD STYLE="text-align: justify"><B>PURPOSE OF TRANSACTION.</B></TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">The Reporting Persons
acquired the Subject Units pursuant to the transactions contemplated in the Purchase Agreement and currently expect to sell the
Subject Units from time to time as market conditions warrant, subject to the terms of the Securities Agreement, and subject to
release of certain of the Subject Units held pursuant to the Escrow Agreement, a copy of which is attached hereto as Exhibit 99.4
and incorporated herein by reference. The Management Persons do not have a direct or indirect beneficial ownership interest in
the Issuer, although CME anticipates that it may in the future distribute some of the Subject Units held by it to Kevin Sullivan
in respect of his ownership of equity of CME. Mr. Sullivan currently expects to sell Subject Units distributed to him, if any,
as market conditions warrant, subject to the terms of the Securities Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Except for the matters
set forth in Items 3 and 5 and the first paragraph of this Item 4, the Reporting Persons and Management Persons have no present
plans or proposals that relate to or that would result in any of the following actions:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 37.4pt"></TD><TD STYLE="width: 28.05pt">(a)</TD><TD STYLE="text-align: justify">The acquisition by any person of additional securities of the Issuer, or the disposition of securities
of the Issuer;</TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 37.4pt"></TD><TD STYLE="width: 28.05pt">(b)</TD><TD STYLE="text-align: justify">An extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving
the Issuer or any of its subsidiaries;</TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 37.4pt"></TD><TD STYLE="width: 28.05pt">(c)</TD><TD STYLE="text-align: justify">A sale or transfer of a material amount of assets of the Issuer or any of its subsidiaries;</TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 37.4pt"></TD><TD STYLE="width: 28.05pt">(d)</TD><TD STYLE="text-align: justify">Any change in the present board of directors or management of the Issuer, including any plans or
proposals to change the number or term of directors or to fill any existing vacancies on the board;</TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 37.4pt"></TD><TD STYLE="width: 28.05pt">(e)</TD><TD STYLE="text-align: justify">Any material change in the present capitalization or dividend policy of the Issuer;</TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 37.4pt"></TD><TD STYLE="width: 28.05pt">(f)</TD><TD STYLE="text-align: justify">Any other material change in the Issuer’s business or corporate structure;</TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 37.4pt"></TD><TD STYLE="width: 28.05pt">(g)</TD><TD STYLE="text-align: justify">Changes in the Issuer’s charter, bylaws or instruments corresponding thereto or other actions
which may impede the acquisition of control of the Issuer by any person;</TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 37.4pt"></TD><TD STYLE="width: 28.05pt">(h)</TD><TD STYLE="text-align: justify">Causing a class of securities of the Issuer to be delisted from a national securities exchange
or to cease to be authorized to be quoted in an inter-dealer quotation system of a registered national securities association;</TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 37.4pt"></TD><TD STYLE="width: 28.05pt">(i)</TD><TD STYLE="text-align: justify">A class of equity securities of the Issuer becoming eligible for termination of registration pursuant
to Section 12(g)(4) of the Act; or</TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"> </P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 65.45pt; text-align: justify; text-indent: -28.05pt"> </P>
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<TR STYLE="vertical-align: top">
<TD STYLE="width: 33%; font-size: 10pt"><FONT STYLE="font-size: 10pt">CUSIP: 02752P100</FONT></TD>
<TD STYLE="width: 34%; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">13D</FONT></TD>
<TD STYLE="width: 33%; font-size: 10pt"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: center"> </TD>
<TD STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">9 of 11</FONT></TD>
<TD STYLE="font-size: 10pt; text-align: center"> </TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 65.45pt; text-align: justify; text-indent: -28.05pt"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 37.4pt"></TD><TD STYLE="width: 28.05pt">(j)</TD><TD STYLE="text-align: justify">Any action similar to any of those enumerated above.</TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 37.4pt">The Reporting Persons
and the Management Persons may determine to acquire additional Common Units through open market purchases or otherwise, sell Common
Units through the open market transactions or otherwise, or otherwise engage or participate in transactions in the Subject Units
without the purpose or effect of changing or influencing the control of the Issuer. Such transactions may take place at any time
and without prior notice. There can be no assurance, however, that the Reporting Persons or Management Persons will take any such
actions. The Reporting Persons reserve the right to change their intentions and to develop plans or proposals that could result
in any of the transactions described in subparagraphs (a) through (j) above, or any other transaction which the Reporting Person
believes could enhance shareholder value.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 37.4pt"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1in"><B>ITEM 5.</B></TD><TD STYLE="text-align: justify"><B>INTEREST IN SECURITIES OF THE ISSUER.</B></TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(a) As of the date
hereof, the Energy Spectrum Entities may be deemed to be the direct or indirect beneficial owners of 6,468,529<FONT STYLE="font-variant: small-caps">
</FONT>Common Units, representing approximately 35.9% of the Issuer’s outstanding Common Units, of which 6,231,188 are owned
of record by ESP. The shares beneficially owned by CME consist of 661,743 Common Units of which all are owned of record by CME.
In both cases the calculation of beneficial ownership percentage is based on a total number of issued and outstanding Common Units
of 18,036,484 (which is the number of shares listed as outstanding under the Issuer’s most recent 10-Q plus all Subject Units).
The Management Persons do not beneficially own any Common Units.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Other than as set forth
above, the Reporting Persons and Management Persons are not the beneficial owners of any Common Units individually.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(b) The Energy Spectrum
Entities have sole power to vote and dispose of 6,231,188 Common Units and shared power to vote and dispose of 237,341 Common Units,
which power is shared with CME. CME has sole power to vote and dispose of 424,402 Common Units and shared power to vote and dispose
of 237,341 Common Units, which power is shared with the Energy Spectrum Entities.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(c) The Reporting Persons
and the Management Persons have not previously owned any Common Units or other equity securities in the Issuer and have therefore
not been required to file a Schedule 13D or 13G yet.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(d) Not applicable.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(e) Not applicable.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1in"><B>ITEM 6.</B></TD><TD STYLE="text-align: justify"><B>CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO SECURITIES OF THE ISSUER.</B></TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">ESP and CME are parties
to that certain Sellers’ Agreement dated October 13, 2014, which appoints ESP as Sellers’ Representative and gives
them authority to control securities held by the Escrow Agent pursuant to the Escrow Agreement. The following agreements between
the Reporting Persons and others relate to the Common Units:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.75in"></TD><TD STYLE="width: 0.25in">1.</TD><TD STYLE="text-align: justify">The Securities Agreement</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.75in"></TD><TD STYLE="width: 0.25in">2.</TD><TD STYLE="text-align: justify">The Purchase Agreement</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.75in"></TD><TD STYLE="width: 0.25in">3.</TD><TD STYLE="text-align: justify">The Escrow Agreement.</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.75in"></TD><TD STYLE="width: 0.25in">4.</TD><TD STYLE="text-align: justify">The Irrevocable Letter.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Other than as described
herein, there are no contracts, arrangements, understandings, or relationships between the Reporting Persons or the Management
Persons and any other person with respect to securities of the Issuer.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 33%; font-size: 10pt"><FONT STYLE="font-size: 10pt">CUSIP: 02752P100</FONT></TD>
<TD STYLE="width: 34%; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">13D</FONT></TD>
<TD STYLE="width: 33%; font-size: 10pt"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: center"> </TD>
<TD STYLE="font-size: 10pt; text-align: center">10<FONT STYLE="font-size: 10pt"> of 11</FONT></TD>
<TD STYLE="font-size: 10pt; text-align: center"> </TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0"></TD><TD STYLE="width: 1in; text-align: left"><B>ITEM 7.</B></TD><TD STYLE="text-align: justify"><B>MATERIAL TO BE FILED AS EXHIBITS.</B></TD>
</TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 15%; padding-right: 0.8pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">Exhibit 99.1</FONT></TD>
<TD STYLE="width: 85%; padding-right: 0.8pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">Joint Filing Agreement of even date</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="padding-right: 0.8pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">Exhibit 99.2</FONT></TD>
<TD STYLE="padding-right: 0.8pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">Securities Agreement dated October 14, 2014 (previously filed as Exhibit 4.1 to the Issuer’s Current Report on Form 8-K, filed on October 15, 2014)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="padding-right: 0.8pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">Exhibit 99.3</FONT></TD>
<TD STYLE="padding-right: 0.8pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">Irrevocable Letter dated October 14, 2014</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="padding-right: 0.8pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">Exhibit 99.4</FONT></TD>
<TD STYLE="padding-right: 0.8pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">Escrow Agreement dated October 14, 2014</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="padding-right: 0.8pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">Exhibit 99.5</FONT></TD>
<TD STYLE="padding-right: 0.8pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">Purchase Agreement dated October 13, 2014 (previously filed as Exhibit 2.1 to the Issuer’s Current Report on Form 8-K, filed on October 15, 2014)</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="padding-right: 0.8pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">Exhibit 99.6</FONT></TD>
<TD STYLE="padding-right: 0.8pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">Sellers’ Agreement dated October 13, 2014</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><B> </B></P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 33%; font-size: 10pt"><FONT STYLE="font-size: 10pt">CUSIP: 02752P100</FONT></TD>
<TD STYLE="width: 34%; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">13D</FONT></TD>
<TD STYLE="width: 33%; font-size: 10pt"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: center"> </TD>
<TD STYLE="font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt">11 of 11</FONT></TD>
<TD STYLE="font-size: 10pt; text-align: center"> </TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B><U>SIGNATURES</U></B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">After reasonable inquiry
and to the best of the knowledge and belief of the undersigned, the undersigned certify that the information set forth in this
statement is true, complete and correct.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in">Date: October 23, 2014</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">ENERGY SPECTRUM SECURITIES CORPORATION</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="width: 50%; font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD STYLE="width: 3%; font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">By:</FONT></TD>
<TD STYLE="width: 47%; border-bottom: Black 1pt solid; font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">/s/ James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Name: James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Title: Vice President</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">ENERGY SPECTRUM VI LLC</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">By:</FONT></TD>
<TD STYLE="border-bottom: Black 1pt solid; font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">/s/ James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Name: James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Title: Managing Director</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">ENERGY SPECTRUM CAPITAL VI LP</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">By: ENERGY SPECTRUM VI LLC,</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="padding-left: 0.25in; font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">its general partner</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">By:</FONT></TD>
<TD STYLE="border-bottom: Black 1pt solid; font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">/s/ James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Name: James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Title: Managing Director</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">ENERGY SPECTRUM PARTNERS VI LP</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">By: ENERGY SPECTRUM CAPITAL VI LP,</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="padding-left: 0.25in; font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">its general partner</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">By:</FONT></TD>
<TD STYLE="border-bottom: Black 1pt solid; font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">/s/ James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Name: James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Title: Managing Director</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">COSTAR MIDSTREAM ENERGY LLC</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">By:</FONT></TD>
<TD STYLE="border-bottom: Black 1pt solid; font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">/s/ James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Name: James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt"><FONT STYLE="font-size: 10pt">Title: Manager</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 3in; text-align: justify; text-indent: -2.15pt"> </P>
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<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>v391998_ex99-1.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
<HTML>
<HEAD>
<TITLE></TITLE>
</HEAD>
<BODY STYLE="font: 10pt Times New Roman, Times, Serif">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 3in; text-align: justify; text-indent: -2.15pt"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Exhibit 99.1</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>JOINT FILING AGREEMENT</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">The undersigned acknowledge and agree that
the foregoing statement on Schedule 13D is filed on behalf of each of the undersigned and that all subsequent amendments to this
statement on Schedule 13D shall be filed on behalf of each of the undersigned without the necessity of filing additional joint
filing statements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for
the completeness and accuracy of the information concerning him, her or it contained herein, but shall not be responsible for the
completeness and accuracy of the information concerning the other entities or persons, except to the extent that he, she or it
knows or has reason to believe such information is inaccurate.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in">Date: October 23, 2014</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">ENERGY SPECTRUM SECURITIES CORPORATION</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="width: 50%; font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD STYLE="width: 3%; font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">By:</FONT></TD>
<TD STYLE="width: 47%; border-bottom: Black 1pt solid; font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">/s/ James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Name: James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Title: Vice President</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">ENERGY SPECTRUM VI LLC</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">By:</FONT></TD>
<TD STYLE="border-bottom: Black 1pt solid; font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">/s/ James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Name: James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Title: Managing Director</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">ENERGY SPECTRUM CAPITAL VI LP</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">By: ENERGY SPECTRUM VI LLC,</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="padding-left: 0.25in; font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">its general partner</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">By:</FONT></TD>
<TD STYLE="border-bottom: Black 1pt solid; font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">/s/ James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Name: James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Title: Managing Director</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">ENERGY SPECTRUM PARTNERS VI LP</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">By: ENERGY SPECTRUM CAPITAL VI LP,</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="padding-left: 0.25in; font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">its general partner</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">By:</FONT></TD>
<TD STYLE="border-bottom: Black 1pt solid; font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">/s/ James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Name: James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Title: Managing Director</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">COSTAR MIDSTREAM ENERGY LLC</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">By:</FONT></TD>
<TD STYLE="border-bottom: Black 1pt solid; font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">/s/ James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Name: James P. Benson</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="font-size: 10pt; text-align: left; text-indent: 0in"> </TD>
<TD COLSPAN="2" STYLE="font-size: 10pt; text-align: left; text-indent: 0in"><FONT STYLE="font-size: 10pt">Title: Manager</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"></P>
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</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.3
<SEQUENCE>3
<FILENAME>v391998_ex99-3.htm
<DESCRIPTION>EXHIBIT 99.3
<TEXT>
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<HEAD>
<TITLE></TITLE>
</HEAD>
<BODY STYLE="font: 10pt Times New Roman, Times, Serif">
<P STYLE="margin: 0"> </P>
<P STYLE="margin: 0; text-align: right"><B>Exhibit 99.3</B></P>
<P STYLE="margin: 0"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top; background-color: white">
<TD STYLE="width: 50%; border-bottom: Black 1pt solid; text-indent: 0in; font-size: 10pt"><IMG SRC="tex99-3.jpg" ALT=""></TD>
<TD STYLE="width: 50%; border-bottom: Black 1pt solid; text-align: right; text-indent: 0in; font-size: 10pt; vertical-align: bottom"><B>American Midstream Partners, LP</B></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in; background-color: transparent">October 14,
2014</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in; background-color: transparent">Computershare
Investor Services</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in; background-color: transparent">8742 Lucent
Blvd., Suite 225</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in; background-color: transparent">Highlands Ranch,
CO 80129</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; background-color: transparent"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">RE:</TD><TD STYLE="text-align: justify">Irrevocable letter of instruction</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in; background-color: transparent">Dear Ladies
and Gentlemen:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent">Please
be advised that American Midstream Partners, LP (“<FONT STYLE="font-family: Times New Roman, Times, Serif; background-color: white"><U>AMID</U></FONT>”),
as general partner of American Midstream, LLC, has entered into a business transaction with Costar Midstream Energy, LLC (“<FONT STYLE="font-family: Times New Roman, Times, Serif; background-color: white"><U>Costar</U></FONT>”)
and Energy Spectrum Partners VI LP (“<FONT STYLE="font-family: Times New Roman, Times, Serif; background-color: white"><U>Energy
Spectrum</U></FONT>”) in which common units of AMID (“<U>Common Units</U>”)
are to be issued on November 8, 2014. The transaction has closed, and as a result, AMID is obligated to cause the issuances described
below at the time and in the manner provided in this letter. Our instructions are irrevocable and cannot be withdrawn or modified
by AMID or any party acting on our behalf. Costar and Energy Spectrum are third party beneficiaries of our instructions to you.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent">Please
open a new account for each of the following entities in the names, and utilizing the addresses, set forth below:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 90%; border-collapse: collapse; margin-left: 0.5in">
<TR STYLE="vertical-align: top; background-color: white">
<TD STYLE="width: 50%; text-align: justify; text-indent: 0in">Costar Midstream Energy LLC</TD>
<TD STYLE="width: 50%; text-align: justify; text-indent: 0in">Energy Spectrum Partners VI LP</TD></TR>
<TR STYLE="vertical-align: top; background-color: white">
<TD STYLE="text-align: justify; text-indent: 0in">8150 N. Central Expy., Suite 635</TD>
<TD STYLE="text-align: justify; text-indent: 0in">5956 Sherry Lane, Suite 900</TD></TR>
<TR STYLE="vertical-align: top; background-color: white">
<TD STYLE="text-align: justify; text-indent: 0in">Dallas, Texas 75206</TD>
<TD STYLE="text-align: justify; text-indent: 0in">Dallas, Texas 75225</TD></TR>
<TR STYLE="vertical-align: top; background-color: white">
<TD STYLE="text-align: justify; text-indent: 0in">Attn: Kevin <FONT STYLE="font-family: Times New Roman, Times, Serif; background-color: white"><I>J.</I></FONT> Sullivan</TD>
<TD STYLE="text-align: justify; text-indent: 0in"> </TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent">In
addition, you are hereby specifically directed to issue, effective November 8, 2014, Common Units to the following entities, in
the noted amounts:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; background-color: transparent"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">·</FONT></TD><TD STYLE="text-align: justify">Costar Midstream Energy LLC, 424,402 Common Units; and</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; background-color: transparent"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">·</FONT></TD><TD STYLE="text-align: justify">Energy Spectrum Partners VI LP, 5,089,218 of Common Units.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent">The
subject Common Units of AMID are to be issued subject to AMID’s Universal Legend (Legend A) and 144 Legend (Legend B) and
Lock-Up Legend (Legend C) each as on <FONT STYLE="font-family: Times New Roman, Times, Serif; background-color: white"><U>Exhibit
A</U></FONT> attached hereto.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent">As
to each of the above-described issuances of Common Units, such Common Units are to be held in individual accounts, in the name
of the unitholder, under electronic book entry with an issue date of November 8, 2014. Except as specifically provided in the immediately
preceding paragraph, the Common Units to be held under electronic book entry will not be subject to restriction.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent">In
addition, you are hereby specifically directed to issue, effective November 8, 2014, one (1) physical certificates in the name
of each of the following entities, in the noted amounts with the noted legends:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"></P>
<!-- Field: Rule-Page --><DIV ALIGN="CENTER" STYLE="margin-top: 0; margin-bottom: 0"><DIV STYLE="font-size: 1pt; border-top: Black 1pt solid; width: 80%"> </DIV></DIV><!-- Field: /Rule-Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><B>1400 16<SUP>th
</SUP>Street, Suite 310 • Denver, Colorado 80202 • Phone: 720-457-6060 • Fax: 720-457-6040</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><FONT STYLE="font-style: normal"><B>www.americanmidstream.com</B></FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<!-- Field: Page; Sequence: 1 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top; background-color: white">
<TD STYLE="width: 50%; border-bottom: Black 1pt solid; text-indent: 0in"><IMG SRC="tex99-3.jpg" ALT=""></TD>
<TD STYLE="width: 50%; border-bottom: Black 1pt solid; text-align: right; text-indent: 0in; vertical-align: bottom"><B>American Midstream Partners, LP</B></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; background-color: transparent"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">·</FONT></TD><TD STYLE="text-align: justify">Costar Midstream Energy LLC, 237,341 Common Units printed with Legend A, Legend B, and Legend C
each as on <FONT STYLE="font-family: Times New Roman, Times, Serif; background-color: white"><U>Exhibit A:</U></FONT> and</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; background-color: transparent"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">·</FONT></TD><TD STYLE="text-align: justify">Energy
Spectrum Partners VILP, 1,141,970 of Co<FONT STYLE="font-family: Times New Roman, Times, Serif; background-color: white">mm</FONT>on
Units printed with Legend A, Legend B, and Legend C each as on <FONT STYLE="font-family: Times New Roman, Times, Serif; background-color: white"><U>Exhibit
A</U></FONT>.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent">Each
such physical certificate is to be mailed, via next day delivery service, on November 8, 2014 to:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0in; background-color: transparent">Wells
Fargo National Banking Association</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0in; background-color: transparent">Attention:
Michael McGuire; Corporate, Municipal and Escrow Solutions</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0in; background-color: transparent">1740
Broadway</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0in; background-color: transparent">Denver,
CO 80274</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent">As
Vice President, General Counsel and Secretary of American Midstream Partners GP, LLC, general partner of American Midstream Partners,
LP, I hereby approve the issuances of the aforementioned Common Units.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent">Sincerely,</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> <IMG SRC="tex99-3sig.jpg" ALT=""></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"><B>William
B. Mathews</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in; background-color: transparent">Secretary,
General Counsel and Vice President</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in; background-color: transparent">American Midstream
GP, LLC, general partner of</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in; background-color: transparent">American Midstream
Partners, LP</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"></P>
<!-- Field: Rule-Page --><DIV ALIGN="CENTER" STYLE="margin-top: 0; margin-bottom: 0"><DIV STYLE="font-size: 1pt; border-top: Black 1pt solid; width: 80%"> </DIV></DIV><!-- Field: /Rule-Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><B>1400 16<SUP>th
</SUP>Street, Suite 310 • Denver, Colorado 80202 • Phone: 720-457-6060 • Fax: 720-457-6040</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><FONT STYLE="font-style: normal"><B>www.americanmidstream.com</B></FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"> </P>
<!-- Field: Page; Sequence: 2 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top; background-color: white">
<TD STYLE="width: 50%; border-bottom: Black 1pt solid; text-indent: 0in"><IMG SRC="tex99-3.jpg" ALT=""></TD>
<TD STYLE="width: 50%; border-bottom: Black 1pt solid; text-align: right; text-indent: 0in; vertical-align: bottom"><B>American Midstream Partners, LP</B></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; background-color: transparent">Exhibit
A</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in; background-color: transparent">American
Midstream Partners, LP Standard Unit Legends</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in; background-color: transparent">[See
Attached]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"></P>
<!-- Field: Rule-Page --><DIV ALIGN="CENTER" STYLE="margin-top: 0; margin-bottom: 0"><DIV STYLE="font-size: 1pt; border-top: Black 1pt solid; width: 80%"> </DIV></DIV><!-- Field: /Rule-Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><B>1400 16<SUP>th
</SUP>Street, Suite 310 • Denver, Colorado 80202 • Phone: 720-457-6060 • Fax: 720-457-6040</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><FONT STYLE="font-style: normal"><B>www.americanmidstream.com</B></FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<!-- Field: Page; Sequence: 3 -->
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<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; background-color: transparent">AMERICAN
MIDSTREAM PARTNERS, LP</P>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; background-color: transparent"> </P>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; background-color: transparent">RESTRICTIVE LEGENDS</P>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: Transparent"><B>A</B>
- UNIVERSAL LEGEND</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent">THE
HOLDER OF THIS SECURITY ACKNOWLEDGES FOR THE BENEFIT OF AMERICAN MIDSTREAM PARTNERS, LP THAT THIS SECURITY MAY NOT BE SOLD, OFFERED,
RESOLD, PLEDGED OR OTHERWISE TRANSFERRED IF SUCH TRANSFER WOULD (A) VIOLATE THE THEN-APPLICABLE FEDERAL OR STATE SECURITIES LAWS
OR RULES AND REGULATIONS OF THE SECURITIES AND EXCHANGE COMMISSION, ANY STATE SECURITIES COMMISSION OR ANY OTHER GOVERNMENTAL AUTHORITY
WITH JURISDICTION OVER SUCH TRANSFER, (B) TERMINATE THE EXISTENCE OR QUALIFICATION OF AMERICAN MIDSTREAM PARTNERS, LP UNDER THE
LAWS OF THE STATE OF DELAWARE OR (C) CAUSE AMERICAN MIDSTREAM PARTNERS, LP TO BE TREATED AS AN ASSOCIATION TAXABLE AS A CORPORATION
OR OTHERWISE TO BE TAXED AS AN ENTITY FOR FEDERAL INCOME TAX PURPOSES (TO THE EXTENT NOT ALREADY SO TREATED OR TAXED). AMERICAN
MIDSTREAM GP, LLC OR ITS SUCCESSOR, THE GENERAL PARTNER OF AMERICAN MIDSTREAM PARTNERS, LP, MAY IMPOSE ADDITIONAL RESTRICTIONS
ON THE TRANSFER OF THIS SECURITY IF IT RECEIVES AN OPINION OF COUNSEL THAT SUCH RESTRICTIONS ARE NECESSARY TO AVOID A SIGNIFICANT
RISK OF AMERICAN MIDSTREAM PARTNERS, LP BECOMING TAXABLE AS A CORPORATION OR OTHERWISE BECOMING TAXABLE AS AN ENTITY FOR FEDERAL
INCOME TAX PURPOSES. THE RESTRICTIONS SET FORTH ABOVE SHALL NOT PRECLUDE THE SETTLEMENT OF ANY TRANSACTIONS INVOLVING THIS SECURITY
ENTERED INTO THROUGH THE FACILITIES OF ANY NATIONAL SECURITIES EXCHANGE ON WHICH THIS SECURITY IS LISTED OR ADMITTED TO TRADING.</P>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: Transparent"><B>B</B>
<FONT STYLE="font-family: Times New Roman, Times, Serif; background-color: white"><B>- </B><FONT STYLE="font-weight: normal">144
</FONT></FONT>LEGEND</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent">THE
UNITS REPRESENTED BY THIS STATEMENT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, (THE “ACT”)
AND MAY NOT BE TRANSFERRED WITHOUT AN OPINION OF COUNSEL SATISFACTORY TO THE PARTNERSHIP THAT REGISTRATION IS NOT REQUIRED UNDER
THE ACT.</P>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: Transparent"><B>C</B>
- LOCK-UP</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent">THE
UNITS REPRESENTED BY THIS STATEMENT ARE SUBJECT TO A LOCK-UP AGREEMENT THAT RESTRICTS THE TRANSFER OF THESE UNITS. COPIES OF SUCH
LOCKUP AGREEMENT MAY BE OBTAINED UPON WRITTEN REQUEST OF THE SECRETARY OF AMERICAN MIDSTREAM GP, LLC.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; background-color: transparent"><B>D</B>
- AFFILIATE</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in; background-color: transparent">THE
HOLDER OF THE UNITS REPRESENTED BY THIS STATEMENT MAY BE SUBJECT TO THE REQUIREMENTS OF SECTION 16 OF THE SECURITIES EXCHANGE ACT
OF 1934, AS AMENDED (THE “ACT”). SUCH SECURITIES MAY NOT BE TRANSFERRED WITHOUT THE CONSENT OF THE PARTNERSHIP OR ITS
LEGAL COUNSEL AS TO COMPLIANCE WITH THE ACT.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
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</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.4
<SEQUENCE>4
<FILENAME>v391998_ex99-4.htm
<DESCRIPTION>EXHIBIT 99.4
<TEXT>
<HTML>
<HEAD>
<TITLE></TITLE>
</HEAD>
<BODY STYLE="font: 10pt Times New Roman, Times, Serif">
<P STYLE="margin: 0"> </P>
<P STYLE="margin: 0; text-align: right"><B>Exhibit 99.4</B></P>
<P STYLE="margin: 0"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>ESCROW AGREEMENT</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">This Escrow Agreement dated this 14 day
of October 2014 (the “Escrow Agreement”), is entered into by and among Costar Midstream Energy, LLC, a Texas limited
liability company (“Costar”), Energy Spectrum Partners VI LP, a Delaware limited partnership (“Energy Spectrum”
and, together with Costar, the “Sellers”), American Midstream, LLC, a Delaware limited liability company (“AMID”
and together with Costar and Energy Spectrum, the “Parties,” and individually, a “Party”), and Wells Fargo
Bank, National Association, a national banking association, as escrow agent (“Escrow Agent”).</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">RECITALS</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">A. The
Parties have entered into that certain Purchase and Sale Agreement (the “Purchase Agreement”), of even date herewith,
pursuant to which the parties have agreed to place (i) certain funds and (ii) common units representing limited partnership interests
(“Common Units”) of American Midstream Partners, LP, the sole member of AMID (“AMID LP”), into escrow pursuant
to the terms and conditions set forth in the Purchase Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">B.
The Parties agree to place in escrow certain funds as well as Common Units and the Escrow Agent agrees to hold and distribute such
funds and Common Units in accordance with the terms of this Escrow Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">C. The
Parties acknowledge that the Escrow Agent is not a party to, is not bound by, and has no duties or obligations under, the Purchase
Agreement, that all references in this Escrow Agreement to the Purchase Agreement are for convenience, and that the Escrow Agent
shall have no implied duties beyond the express duties set forth in this Escrow Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">In consideration of the promises and agreements
of the Parties and for other good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the
Parties and the Escrow Agent agree as follows:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">ARTICLE 1<BR>
ESCROW DEPOSIT</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 1.1. <U>Receipt
of Escrow Property</U>.<B> </B>Upon execution hereof, AMID shall deliver, or shall cause the deliverance, to the Escrow Agent of:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(a) the
amount of <U>Two Million Five Hundred Thousand Dollars ($2,500,000) </U>(the “Escrow Cash”) in immediately available
funds;</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(b) on
or about November 8, 2014, one certificate, dated November 8, 2014, in the name of Costar Midstream Energy, LLC, representing 237,341
Common Units (the “Costar Certificate”); and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(c) on
or about November 8, 2014, one certificate, dated November 8, 2014, in the name of Energy Spectrum Partners VI LP, representing
1,141,970 Common Units (the “Energy Spectrum Certificate, together with the Costar Certificate, the “Escrow Units”)</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">The Escrow Units together with the Escrow
Cash shall constitute the “Escrow Property”).</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 1.2. <U>Investments</U>.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(a) The
Escrow Agent is authorized and directed to deposit, transfer, hold and invest the Escrow Cash and any investment income thereon
as set forth in Exhibit A hereto, or as set forth in any subsequent written instruction signed by each of the Parties. Any investment
earnings and income on the Escrow Cash shall become part of the Escrow Cash, and shall be disbursed in accordance with Section
1.3 of this Escrow Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.15pt"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(b) Prior
to delivery of such funds by transfer agent for the Common Units (the “Transfer Agent”), the Parties will provide prior
written notice to the Escrow Agent of any dividends, earnings or other distributions on the Escrow Units (collectively, “Escrow
Unit Earnings”) including the amount(s) of such payments and the date such payments will be sent. Any Escrow Unit Earnings
received by the Escrow Agent shall become part of the Escrow Cash and shall be distributed in accordance with Section 1.3. The
Escrow Agent is authorized and directed to deposit, transfer, hold and invest such funds in accordance with Section 1.2(a).</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(c) The
Escrow Agent is hereby authorized and directed to sell or redeem any such investments as it deems necessary to make any payments
or distributions required under this Escrow Agreement. The Escrow Agent shall have no responsibility or liability for any loss
that may result from any investment or sale of investment made pursuant to this Escrow Agreement. The Escrow Agent is hereby authorized,
in making or disposing of any investment permitted by this Escrow Agreement, to deal with itself (in its individual capacity) or
with any one or more of its affiliates, whether it or any such affiliate is acting as agent of the Escrow Agent or for any third
person or dealing as principal for its own account. The Parties acknowledge that the Escrow Agent is not providing investment supervision,
recommendations, or advice.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.15pt"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 1.3. <U>Disbursements</U>.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(a) <I>Escrow Cash</I>.
Upon written instructions of the Parties, the Escrow Agent shall deliver the Escrow Cash, together with interest and earnings thereof
pursuant to Section 1.2(a), by wire transfer of immediately available funds to the account or accounts set forth in such written
notice.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(b) <I>Escrow Units</I>.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">(i) First
Release. Upon receipt of written instructions signed by each Party, in substantially the form set forth on Exhibit D-1 (“First
Release Instructions”), the Escrow Agent shall:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in">(A) Mail, via
overnight delivery service, the certificate or certificates identified in the First Release Instructions to the Transfer Agent
together with the instruction letter from AMID LP included in the First Release Instructions; and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in">(B) Receive
back from the Transfer Agent one or more certificates representing the number of Common Units set forth in the First Release Instructions,
which Common Units shall be the Escrow Units following the First Release.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">(ii) Second
Release. Upon receipt of written instructions signed by each Party, in substantially the form set forth on Exhibit D-2 (“Second
Release Instructions”), the Escrow Agent shall:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in">(A) Mail, via
overnight delivery service, the certificate or certificates identified in the Second Release Instructions to the Transfer Agent
together with the instruction letter from AMID LP included in the Second Release Instructions; and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in">(B) Receive
back from the Transfer Agent one or more certificates representing the number of Common Units set forth in the Second Release Instructions,
which Common Units shall be the Escrow Units following the Second Release.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">(iii) Final
Release. Upon receipt of written instructions signed by each Party, in substantially the form set forth on Exhibit D-3 (“Final
Release Instructions”), the Escrow Agent shall (i) mail, via overnight delivery service, all certificates then held by the
Escrow Agent to the Transfer Agent together with the instruction letter from AMID LP included in the Final Release Instructions,
and (ii) deliver the remaining Escrow Cash, if any, in the Escrow Account on the date of the Escrow Agent’s receipt of the
Final Release Instructions plus any final investment income earned following the date of the Escrow Agent’s receipt of the
Final Release Instructions, by wire transfer of immediately available funds to the account or accounts set forth in the Final Release
Instructions.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">(iv) Additional
Releases. Upon receipt of one or more written instructions signed by each Party, in substantially the form set forth on Exhibit
D-4 (“Additional Release Instructions”), the Escrow Agent shall:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in">(A) Mail, via
overnight delivery service, the certificate or certificates identified in the Additional Release Instructions to Transfer Agent
together with the instruction letter from AMID LP included in the Additional Release Instructions; and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in">(B) Receive
back from the Transfer Agent one or more certificates representing the number of Common Units set forth in the Additional Release
Instructions, which Common Units shall be the Escrow Units following any Additional Release.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">(v) Indemnity
Releases. Upon receipt of one or more written instructions signed by each Party, in substantially the form set forth on Exhibit
D-5 (“Indemnity Release Instructions”), the Escrow Agent shall:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in">(A) Deliver
from the Escrow Cash, in immediately available funds, by wire transfer of immediately available funds to the account or accounts
set forth in the Indemnity Release Instructions;</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in">(B) If so instructed
in the Indemnity Release Instructions, mail, via overnight delivery service, the certificate or certificates identified in the
Indemnity Release Instructions to Transfer Agent together with the instruction letter from AMID LP included in the Indemnity Release
Instructions; and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in">(C) Receive
back from the Transfer Agent one or more certificates representing the number of Common Units set forth in the Indemnity Release
Instructions, which Common Units shall be the Escrow Units following any Indemnity Release.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 1.4. <U>Security
Procedure For Funds and Common Unit Transfers</U>.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(a) The Escrow Agent
shall confirm each funds and Common Units transfer instruction received in the name of a Party by means of the security procedure
selected by such Party and communicated to the Escrow Agent through a signed certificate in the form of Exhibit B-1 or Exhibit
B-2, as applicable, attached hereto, which upon receipt by the Escrow Agent shall become a part of this Escrow Agreement. Once
delivered to the Escrow Agent, Exhibit B-1 or Exhibit B-2, as applicable, may be revised or rescinded only by a writing signed
by an authorized representative of the Party. Such revisions or rescissions shall be effective only after actual receipt and following
such period of time as may be necessary to afford the Escrow Agent a reasonable opportunity to act on it. If a revised Exhibit
B-1 or Exhibit B-2, as applicable, or a rescission of an existing Exhibit B-1 or Exhibit B-2, as applicable, is delivered to the
Escrow Agent by an entity that is a successor-in-interest to such Party, such document shall be accompanied by additional documentation
satisfactory to the Escrow Agent showing that such entity has succeeded to the rights and responsibilities of the Party under this
Escrow Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(b) The
Parties understand that the Escrow Agent’s inability to receive or confirm funds and Common Units transfer instructions pursuant
to the security procedure selected by such Party may result in a delay in accomplishing such funds or Common Units transfer, and
agree that the Escrow Agent shall not be liable for any loss caused by any such delay.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(c) The Escrow Agent
shall, upon the verified inquiry of any authorized representative set forth on Exhibit B-1 or Exhibit B-2, as applicable, provide
such authorized representation with:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">(i) The current
amount of Escrow Cash then being held by the Escrow Agent;</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">(ii) The
current amount of Unit Escrow Earnings then being held by the Escrow Agent; and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: 0.5in">(iii) Copies
of each certificate representing Common Units then held by the Escrow Agent.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 1.5. <U>Income Tax Allocation
and Reporting</U>.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(a) The
Parties agree that, for tax reporting purposes, all interest and other income from investment of the Escrow Property shall, as
of the end of each calendar year and to the extent required by the Internal Revenue Service, be reported as having been earned
by Costar and Energy Spectrum in the proportions set forth below:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Energy Spectrum –
82.8%</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Costar – 17.2%</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 75.75pt"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(b) Prior
to the date hereof, the Parties shall provide the Escrow Agent with certified tax identification numbers by furnishing appropriate
forms W-9 or W-8 and such other forms and documents that the Escrow Agent may request. The Parties understand that if such tax
reporting documentation is not provided and certified to the Escrow Agent, the Escrow Agent may be required by the Internal Revenue
Code of 1986, as amended, and the regulations promulgated thereunder, to withhold a portion of any interest or other income earned
on the investment of the Escrow Property.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(c) To
the extent that the Escrow Agent becomes liable for the payment of any taxes in respect of income derived from the investment of
the Escrow Property, the Escrow Agent shall satisfy such liability to the extent possible from the Escrow Property. The Parties,
jointly and severally, shall indemnify, defend and hold the Escrow Agent harmless from and against any tax, late payment, interest,
penalty or other cost or expense that may be assessed against the Escrow Agent on or with respect to the Escrow Property and the
investment thereof unless such tax, late payment, interest, penalty or other expense was directly caused by the gross negligence
or willful misconduct of the Escrow Agent. The indemnification provided by this Section 1.5(c) is in addition to the indemnification
provided in Section 3.1 and shall survive the resignation or removal of the Escrow Agent and the termination of this Escrow Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 1.6.
<U>Termination</U>. This Escrow Agreement shall terminate upon the earlier of (i) five (5) years from the date of this Escrow
Agreement or (ii) disbursement of all of the Escrow Property, including any interest and investment earnings thereon, except that
the provisions of Sections 1.5(c), 3.1 and 3.2 hereof shall survive termination.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">ARTICLE 2<BR>
DUTIES OF THE ESCROW AGENT</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 2.1. <U>Scope
of Responsibility</U>. Notwithstanding any provision to the contrary, the Escrow Agent is obligated only to perform the duties
specifically set forth in this Escrow Agreement, which shall be deemed purely ministerial in nature. Under no circumstance will
the Escrow Agent be deemed to be a fiduciary to any Party or any other person under this Escrow Agreement. The Escrow Agent will
not be responsible or liable for the failure of any Party to perform in accordance with this Escrow Agreement. The Escrow Agent
shall neither be responsible for, nor chargeable with, knowledge of the terms and conditions of any other agreement, instrument,
or document other than this Escrow Agreement, whether or not an original or a copy of such agreement has been provided to the Escrow
Agent; and the Escrow Agent shall have no duty to know or inquire as to the performance or nonperformance of any provision of any
such agreement, instrument, or document. References in this Escrow Agreement to any other agreement, instrument, or document are
for the convenience of the Parties, and the Escrow Agent has no duties or obligations with respect thereto. This Escrow Agreement
sets forth all matters pertinent to the escrow contemplated hereunder, and no additional obligations of the Escrow Agent shall
be inferred or implied from the terms of this Escrow Agreement or any other agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 2.2. <U>Attorneys
and Agents</U>. The Escrow Agent shall be entitled to rely on and shall not be liable for any action taken or omitted to be taken
in good faith by the Escrow Agent in accordance with the advice of counsel or other professionals retained or consulted by the
Escrow Agent. The Escrow Agent shall be reimbursed as set forth in Section 3.1 for the reasonable and documented compensation (fees,
expenses and other costs) paid and/or reimbursed to such counsel and/or professionals. The Escrow Agent may perform any and all
of its duties through its agents, representatives, attorneys, custodians, and/or nominees.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 2.3. <U>Reliance</U>.
The Escrow Agent shall not be liable for any action taken or not taken by it in accordance with the direction or consent of the
Parties or their respective agents, representatives, successors, or assigns. The Escrow Agent shall not be liable for acting or
refraining from acting upon any notice, request, consent, direction, requisition, certificate, order, affidavit, letter, or other
paper or document believed by it to be genuine and correct and to have been signed or sent by the proper person or persons, without
further inquiry into the person’s or persons’ authority. Concurrent with the execution of this Escrow Agreement, the
Parties shall deliver to the Escrow Agent Exhibit B-1 or Exhibit B-2, as applicable,, which contain authorized signer designations
in Part I thereof.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 2.4. <U>Right
Not Duty Undertaken</U>. The permissive rights of the Escrow Agent to do things enumerated in this Escrow Agreement shall not be
construed as duties.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 2.5. <U>No
Financial Obligation</U>. No provision of this Escrow Agreement shall require the Escrow Agent to risk or advance its own funds
or otherwise incur any financial liability or potential financial liability in the performance of its duties or the exercise of
its rights under this Escrow Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">ARTICLE 3<BR>
PROVISIONS CONCERNING THE ESCROW AGENT</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 3.1. <U>Indemnification</U>.
The Parties, jointly and severally, shall indemnify, defend and hold harmless the Escrow Agent from and against any and all loss,
liability, cost, damage and expense, including, without limitation, attorneys’ fees and expenses or other professional fees
and expenses which the Escrow Agent may suffer or incur by reason of any action, claim or proceeding brought against the Escrow
Agent, arising out of or relating in any way to this Escrow Agreement or any transaction to which this Escrow Agreement relates,
unless such loss, liability, cost, damage or expense shall have been finally adjudicated to have been directly caused by the willful
misconduct or gross negligence of the Escrow Agent. The provisions of this Section 3.1 shall survive the resignation or removal
of the Escrow Agent and the termination of this Escrow Agreement.<B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in">Section 3.2. <U>Limitation
of Liability</U>. <FONT STYLE="text-transform: uppercase">the escrow agent SHALL NOT be liable, directly or indirectly, for any
(i) damages, Losses or expenses arising out of the services provided hereunder, other than damages, losses or expenses which have
been finally adjudicated to have DIRECTLY resulted from the escrow agent’s gross negligence or willful misconduct, or (ii)
special, Indirect, PUNITIVE, or consequential damages or LOSSES OF ANY KIND WHATSOEVER (INCLUDING WITHOUT LIMITATION LOST PROFITS),
even if the escrow agent has been advised of the possibility of such LOSSES OR damages AND REGARDLESS OF THE FORM OF ACTION.</FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 3.3. <U>Resignation
or Removal</U>. The Escrow Agent may resign by furnishing written notice of its resignation to the Parties, and the Parties may
remove the Escrow Agent by furnishing to the Escrow Agent a joint written notice of its removal along with payment of all fees
and expenses to which the Escrow Agent is entitled through the date of removal. Such resignation or removal, as the case may be,
shall be effective thirty (30) days after the delivery of such notice or upon the earlier appointment of a successor, and the Escrow
Agent’s sole responsibility thereafter shall be to safely keep the Escrow Property and to deliver the same to a successor
escrow agent as shall be appointed by the Parties, as evidenced by a joint written notice filed with the Escrow Agent or in accordance
with a court order. If the Parties have failed to appoint a successor escrow agent prior to the expiration of thirty (30) days
following the delivery of such notice of resignation or removal, the Escrow Agent may petition any court of competent jurisdiction
for the appointment of a successor escrow agent or for other appropriate relief, and any such resulting appointment shall be binding
upon the Parties.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 3.4. <U>Compensation</U>. The Escrow Agent shall be entitled
to compensation for its services as stated in the fee schedule attached hereto as Exhibit C, which compensation shall be paid by
AMID. The fee agreed upon for the services rendered hereunder is intended as full compensation for the Escrow Agent's services
as contemplated by this Escrow Agreement; <I>provided</I>, <I>however</I>, that in the event that the conditions for the disbursement
of funds under this Escrow Agreement are not fulfilled, or the Escrow Agent renders any service not contemplated in this Escrow
Agreement, or there is any assignment of interest in the subject matter of this Escrow Agreement, or any material modification
hereof, or if any material controversy arises hereunder, or the Escrow Agent is made a party to any litigation pertaining to this
Escrow Agreement or the subject matter hereof, then the Escrow Agent shall be compensated for such extraordinary services and reimbursed
for all costs and expenses, including reasonable attorneys’ fees and expenses, occasioned by any such delay, controversy,
litigation or event. If any amount due to the Escrow Agent hereunder is not paid within thirty (30) days of the date due, the Escrow
Agent in its sole discretion may charge interest on such amount up to the highest rate permitted by applicable law. The Escrow
Agent shall have, and is hereby granted, a prior lien upon the Escrow Property with respect to its unpaid fees, non-reimbursed
expenses and unsatisfied indemnification rights, superior to the interests of any other persons or entities and is hereby granted
the right to set off and deduct any unpaid fees, non-reimbursed expenses and unsatisfied indemnification rights from the Escrow
Property.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 3.5. <U>Disagreements</U>.
If any conflict, disagreement or dispute arises between, among, or involving any of the parties hereto concerning the meaning or
validity of any provision hereunder or concerning any other matter relating to this Escrow Agreement, or the Escrow Agent is in
doubt as to the action to be taken hereunder, the Escrow Agent may, at its option, retain the Escrow Property until the Escrow
Agent (i) receives a final non-appealable order of a court of competent jurisdiction or a final non-appealable arbitration decision
directing delivery of the Escrow Property, (ii) receives a written agreement executed by each of the parties involved in such disagreement
or dispute directing delivery of the Escrow Property, in which event the Escrow Agent shall be authorized to disburse the Escrow
Property in accordance with such final court order, arbitration decision, or agreement, or (iii) files an interpleader action in
any court of competent jurisdiction, and upon the filing thereof, the Escrow Agent shall be relieved of all liability as to the
Escrow Property and shall be entitled to recover attorneys’ fees, expenses and other costs incurred in commencing and maintaining
any such interpleader action. The Escrow Agent shall be entitled to act on any such agreement, court order, or arbitration decision
without further question, inquiry, or consent.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 3.6. <U>Merger
or Consolidation</U>. Any corporation or association into which the Escrow Agent may be converted or merged, or with which it may
be consolidated, or to which it may sell or transfer all or substantially all of its corporate trust business and assets as a whole
or substantially as a whole, or any corporation or association resulting from any such conversion, sale, merger, consolidation
or transfer to which the Escrow Agent is a party, shall be and become the successor escrow agent under this Escrow Agreement and
shall have and succeed to the rights, powers, duties, immunities and privileges as its predecessor, without the execution or filing
of any instrument or paper or the performance of any further act.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 3.7. <U>Attachment
of Escrow Property; Compliance with Legal Orders</U>. In the event that any Escrow Property shall be attached, garnished or levied
upon by any court order, or the delivery thereof shall be stayed or enjoined by an order of a court, or any order, judgment or
decree shall be made or entered by any court order affecting the Escrow Property, the Escrow Agent is hereby expressly authorized,
in its sole discretion, to respond as it deems appropriate or to comply with all writs, orders or decrees so entered or issued,
or which it is advised by legal counsel of its own choosing is binding upon it, whether with or without jurisdiction. In the event
that the Escrow Agent obeys or complies with any such writ, order or decree it shall not be liable to any of the Parties or to
any other person, firm or corporation, should, by reason of such compliance notwithstanding, such writ, order or decree be subsequently
reversed, modified, annulled, set aside or vacated.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 3.8 <U>Force
Majeure</U>. The Escrow Agent shall not be responsible or liable for any failure or delay in the performance of its obligation
under this Escrow Agreement arising out of or caused, directly or indirectly, by circumstances beyond its reasonable control, including,
without limitation, acts of God; earthquakes; fire; flood; wars; acts of terrorism; civil or military disturbances; sabotage; epidemic;
riots; interruptions, loss or malfunctions of utilities, computer (hardware or software) or communications services; accidents;
labor disputes; acts of civil or military authority or governmental action; it being understood that the Escrow Agent shall use
commercially reasonable efforts which are consistent with accepted practices in the banking industry to resume performance as soon
as reasonably practicable under the circumstances.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">ARTICLE 4<BR>
MISCELLANEOUS</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 4.1. <U>Successors
and Assigns</U>. This Escrow Agreement shall be binding on and inure to the benefit of the Parties and the Escrow Agent and their
respective successors and permitted assigns. No other persons shall have any rights under this Escrow Agreement. No
assignment of the interest of any of the Parties shall be binding unless and until written notice of such assignment shall be delivered
to the other Party and the Escrow Agent and shall require the prior written consent of the other Party and the Escrow Agent
(such consent not to be unreasonably withheld).</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 4.2. <U>Escheat</U>.
The Parties are aware that under applicable state law, property which is presumed abandoned may under certain circumstances escheat
to the applicable state. The Escrow Agent shall have no liability to the Parties, their respective heirs, legal representatives,
successors and assigns, or any other party, should any or all of the Escrow Property escheat by operation of law.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 4.3. <U>Notices</U>.
All notices, requests, demands, and other communications required under this Escrow Agreement shall be in writing, in English,
and shall be deemed to have been duly given if delivered (i) personally, (ii) by facsimile transmission with written confirmation
of receipt, (iii) on the day of transmission if sent by electronic mail (“e-mail”) to the e-mail address given below,
and written confirmation of receipt is obtained promptly after completion of transmission, (iv) by overnight delivery service with
a reputable national overnight delivery service, or (v) by mail or by certified mail, return receipt requested, and postage prepaid.
If any notice is mailed, it shall be deemed given five business days after the date such notice is deposited in the United States
mail. If notice is given to a party, it shall be given at the address for such party set forth below. It shall be the responsibility
of the Parties to notify the Escrow Agent and the other Party in writing of any name or address changes. In the case of communications
delivered to the Escrow Agent, such communications shall be deemed to have been given on the date received by the Escrow Agent.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.3in">If to American Midstream,
LLC:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.3in">1400 16<SUP>th</SUP>
Street, Suite 310</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.3in">Denver, CO 80202</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.3in">Attention: William B. Mathews, General Counsel</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.3in">Telephone: (720) 457-6075</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.3in">Facsimile: (720) 457-6040</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.3in">E-mail: bmathews@americanmidstream.com</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.3in">If to Sellers:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.3in">Energy Spectrum Partners
VI LP</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.3in">5956 Sherry Lane, Suite
900</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.3in">Dallas, TX 75225</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.3in">Attention: James P. Benson</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.3in">Telephone: 214-987-6103</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.3in">E-mail: jim.benson@energyspectrum.com</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.3in">with a copy to, which
shall not constitute notice:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.3in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.3in">Jackson Walker L.L.P.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.3in">901 Main Street, Suite
6000</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.3in">Dallas, TX 75202</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 22.5pt; text-align: justify">Attn: Jeffrey M. Sone, Esq.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 22.5pt; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 22.5pt; text-align: justify">And</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 22.5pt; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 22.5pt; text-align: justify">Costar Midstream Energy, LLC</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 22.5pt; text-align: justify">8150 North Central Expressway</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 22.5pt; text-align: justify">Suite 635</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 22.5pt; text-align: justify">Dallas, TX 75206</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 22.5pt; text-align: justify">Attn: Kevin Sullivan</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.3in">If to the Escrow Agent:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.3in">Wells Fargo Bank, National Association</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.3in">1740 Broadway</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.3in">Denver, CO 80274</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.3in">Attention: Michael McGuire; Corporate, Municipal
and Escrow Solutions</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.3in">Telephone: (303) 863-6425	</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.3in">Facsimile: (303) 863-5645</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.3in">E-mail: michael.w.mcguire@wellsfargo.com</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 4.4. <U>Governing
Law</U>. This Escrow Agreement shall be governed by and construed in accordance with the laws of the State of Delaware applicable
to contracts performable in that state without reference to principals regarding the resolution of conflicts of law.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 4.5. <U>Entire
Agreement</U>. This Escrow Agreement and the exhibits hereto set forth the entire agreement and understanding of the parties related
to the Escrow Property.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 4.6. <U>Amendment</U>.
This Escrow Agreement may be amended, modified, superseded, rescinded, or canceled only by a written instrument executed by the
Parties and the Escrow Agent.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 4.7. <U>Waivers</U>.
The failure of any party to this Escrow Agreement at any time or times to require performance of any provision under this Escrow
Agreement shall in no manner affect the right at a later time to enforce the same performance. A waiver by any party to this Escrow
Agreement of any such condition or breach of any term, covenant, representation, or warranty contained in this Escrow Agreement,
in any one or more instances, shall neither be construed as a further or continuing waiver of any such condition or breach nor
a waiver of any other condition or breach of any other term, covenant, representation, or warranty contained in this Escrow Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 4.8. <U>Headings</U>.
Section headings of this Escrow Agreement have been inserted for convenience of reference only and shall in no way restrict or
otherwise modify any of the terms or provisions of this Escrow Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 4.9. <U>Counterparts</U>.
This Escrow Agreement may be executed in one or more counterparts, each of which when executed shall be deemed to be an original,
and such counterparts shall together constitute one and the same instrument.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 4.10 <U>Publication; disclosure</U>.
By executing this Escrow Agreement, the Parties and the Escrow Agent acknowledge that this Escrow Agreement (including related
attachments) contains certain information that is sensitive and confidential in nature and agree that such information needs to
be protected from improper disclosure, including the publication or dissemination of this Escrow Agreement and related information
to individuals or entities not a party to this Escrow Agreement. The Parties further agree to take reasonable measures to mitigate
any risks associated with the publication or disclosure of this Escrow Agreement and information contained therein, including,
without limitation, the redaction of the manual signatures of the signatories to this Escrow Agreement, or, in the alternative,
publishing a conformed copy of this Escrow Agreement. If a Party must disclose or publish this Escrow Agreement or information
contained therein pursuant to any regulatory, statutory, or governmental requirement, as well as any judicial, or administrative
order, subpoena or discovery request, it shall notify in writing the other Party and the Escrow Agent at the time of execution
of this Escrow Agreement of the legal requirement to do so. If any Party becomes aware of any threatened or actual unauthorized
disclosure, publication or use of this Escrow Agreement, that Party shall promptly notify in writing the other Parties and the
Escrow Agent and shall be liable for any unauthorized release or disclosure.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Section 4.11 <U>Sellers’
Representative</U>. Sellers appointed Energy Spectrum to act on behalf of the Sellers with the sole authority to take all actions
under or with respect to this Escrow Agreement and each of the Exhibits and instruments and all matters and transactions contemplated
hereunder. Any action required to be taken by, or right granted to, Sellers under this Agreement may be taken by Energy Spectrum
alone without approval or notice to Costar. To effectuate this arrangement, Costar has named Energy Spectrum as its attorney-in-fact
pursuant to an irrevocable Power of Attorney dated as of October __, 2014 which will be provided to Escrow Agent upon request.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">[The remainder of this page left intentionally
blank.]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">IN WITNESS WHEREOF,
this Escrow Agreement has been duly executed as of the date first written above.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD COLSPAN="2">AMERICAN MIDSTREAM, LLC</TD>
</TR>
<TR STYLE="vertical-align: top">
<TD STYLE="width: 50%"> </TD>
<TD STYLE="width: 4%"> </TD>
<TD STYLE="width: 46%"> </TD>
</TR>
<TR STYLE="vertical-align: top">
<TD STYLE="padding-bottom: 1pt"> </TD>
<TD STYLE="padding-bottom: 1pt">By:</TD>
<TD STYLE="border-bottom: Black 1pt solid">/s/ Daniel C. Campbell</TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD>Name:</TD>
<TD>Daniel C. Campbell</TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD>Title:</TD>
<TD>Senior Vice President and Chief</TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD COLSPAN="2">Financial Officer</TD>
</TR>
<TR STYLE="vertical-align: top">
<TD STYLE="text-align: left"> </TD>
<TD STYLE="text-align: left"> </TD>
<TD STYLE="text-align: left"> </TD>
</TR>
<TR STYLE="vertical-align: top">
<TD STYLE="text-align: left"> </TD>
<TD COLSPAN="2" STYLE="text-align: left">ENERGY SPECTRUM PARTNERS VI LP</TD>
</TR>
<TR STYLE="vertical-align: top">
<TD STYLE="text-align: left"> </TD>
<TD COLSPAN="2" STYLE="text-align: left"> </TD>
</TR>
<TR STYLE="vertical-align: top">
<TD STYLE="text-align: left"> </TD>
<TD COLSPAN="2" STYLE="text-align: left">By: Energy Spectrum Capital VI LP, its <BR>
general partner</TD>
</TR>
<TR STYLE="vertical-align: top">
<TD STYLE="text-align: left"> </TD>
<TD COLSPAN="2" STYLE="text-align: left"> </TD>
</TR>
<TR STYLE="vertical-align: top">
<TD STYLE="text-align: left"> </TD>
<TD COLSPAN="2" STYLE="text-align: left">By: Energy Spectrum VI LLC, its general <BR>
partner</TD>
</TR>
<TR STYLE="vertical-align: top">
<TD STYLE="text-align: left"> </TD>
<TD STYLE="text-align: left"> </TD>
<TD STYLE="text-align: left"> </TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD>By: </TD>
<TD STYLE="border-bottom: Black 1pt solid">/s/ James P. Benson</TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD COLSPAN="2">Name: James P. Benson</TD>
</TR>
<TR STYLE="vertical-align: top">
<TD STYLE="text-align: justify"> </TD>
<TD COLSPAN="2" STYLE="text-align: justify">Title: Managing Director</TD>
</TR>
</TABLE>
<P STYLE="margin: 0"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD COLSPAN="2">COSTAR MIDSTREAM ENERGY, LLC.</TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD COLSPAN="2"> </TD>
</TR>
<TR STYLE="vertical-align: top">
<TD STYLE="width: 50%"> </TD>
<TD STYLE="width: 7%">By:</TD>
<TD STYLE="border-bottom: Black 1pt solid; width: 43%">/s/ Kevin Sullivan</TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD> </TD>
<TD> </TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD>Name:</TD>
<TD STYLE="border-bottom: Black 1pt solid">Kevin Sullivan</TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD> </TD>
<TD> </TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD>Title:</TD>
<TD STYLE="border-bottom: Black 1pt solid">Manager</TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD> </TD>
<TD> </TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD COLSPAN="2">WELLS FARGO BANK, NATIONAL <BR>
ASSOCIATION, as Escrow Agent</TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD COLSPAN="2"> </TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD>By:</TD>
<TD STYLE="border-bottom: Black 1pt solid">/s/ Scott Thompson</TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD> </TD>
<TD> </TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD>Name:</TD>
<TD STYLE="border-bottom: Black 1pt solid">Scott Thompson</TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD> </TD>
<TD> </TD>
</TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD>Title:</TD>
<TD STYLE="border-bottom: Black 1pt solid">Vice President</TD>
</TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 2.5in; text-indent: 0.5in"> </P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>EXHIBIT A</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Agency and Custody Account Direction
</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>For Cash Balances</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Wells Fargo Money Market Deposit Accounts</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Direction to use the following Wells Fargo
Money Market Deposit Accounts for Cash Balances for the escrow account or accounts (the “Account”) established under
the Escrow Agreement to which this Exhibit A is attached.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">You are hereby directed to deposit, as
indicated below, or as I shall direct further in writing from time to time, all cash in the Account in the following money market
deposit account of Wells Fargo Bank, National Association:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Wells Fargo Money Market Deposit Account
(MMDA)</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">I understand that amounts on deposit in
the MMDA are insured, subject to the applicable rules and regulations of the Federal Deposit Insurance Corporation (FDIC), in the
basic FDIC insurance amount of $250,000 per depositor, per insured bank. This includes principal and accrued interest up to a total
of $250,000.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">I acknowledge that I have full power to
direct investments of the Account.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">I understand that I may change this direction
at any time and that it shall continue in effect until revoked or modified by me by written notice to you.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<!-- Field: Page; Sequence: 13 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">EXHIBIT A</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>EXHIBIT B-1</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">American Midstream, LLC (“AMID”)
certifies that the names, titles, telephone numbers, e-mail addresses and specimen signatures set forth in Parts I and II of this
Exhibit B-1 identify the persons authorized to provide direction and initiate or confirm transactions, including funds transfer
instructions, on behalf of AMID, and that the option checked in Part III of this Exhibit B-1 is the security procedure selected
by AMID for use in verifying that a funds transfer instruction received by the Escrow Agent is that of AMID.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">has reviewed each of the security procedures
and has determined that the option checked in Part III of this Exhibit B-1 best meets its requirements; given the size, type and
frequency of the instructions it will issue to the Escrow Agent. By selecting the security procedure specified in Part III of this
Exhibit B-1, AMID acknowledges that it has elected to not use the other security procedures described and agrees to be bound by
any funds transfer instruction, whether or not authorized, issued in its name and accepted by the Escrow Agent in compliance with
the particular security procedure chosen by AMID.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><U>NOTICE</U>: The security procedure selected
by AMID will not be used to detect errors in the funds transfer instructions given by AMID. If a funds transfer instruction describes
the beneficiary of the payment inconsistently by name and account number, payment may be made on the basis of the account number
even if it identifies a person different from the named beneficiary. If a funds transfer instruction describes a participating
financial institution inconsistently by name and identification number, the identification number may be relied upon as the proper
identification of the financial institution. Therefore, it is important that AMID take such steps as it deems prudent to ensure
that there are no such inconsistencies in the funds transfer instructions it sends to the Escrow Agent.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B> </B></P>
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<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Part I</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><B>Name, Title, Telephone Number, Electronic
Mail (“e-mail”) Address and Specimen Signature for person(s) designated to provide direction, including but not limited
to funds transfer instructions, and to otherwise act on behalf of </B>AMID:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: bottom">
<TD STYLE="border-bottom: Black 1pt solid; text-align: justify; width: 23%"><FONT STYLE="font-size: 10pt"><B>Name</B></FONT></TD>
<TD STYLE="text-align: justify; width: 2%"> </TD>
<TD STYLE="border-bottom: Black 1pt solid; text-align: justify; width: 29%"><FONT STYLE="font-size: 10pt"><B>Title</B></FONT></TD>
<TD STYLE="text-align: justify; width: 2%"> </TD>
<TD STYLE="border-bottom: Black 1pt solid; text-align: left; vertical-align: bottom; width: 10%"><FONT STYLE="font-size: 10pt"><B>Telephone Number</B></FONT></TD>
<TD STYLE="text-align: justify; width: 2%"> </TD>
<TD STYLE="border-bottom: Black 1pt solid; text-align: left; vertical-align: bottom; width: 20%"><FONT STYLE="font-size: 10pt"><B>Email Address</B></FONT></TD>
<TD STYLE="text-align: justify; width: 2%"> </TD>
<TD STYLE="border-bottom: Black 1pt solid; text-align: justify; width: 10%"><FONT STYLE="font-size: 10pt"><B>Specimen Signature</B></FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD><FONT STYLE="font-size: 10pt">Daniel C. Campbell</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">Senior Vice President and Chief Financial Officer</FONT></TD>
<TD> </TD>
<TD STYLE="text-align: left; vertical-align: bottom"><FONT STYLE="font-size: 10pt">(303) 374-9847</FONT></TD>
<TD> </TD>
<TD STYLE="text-align: left; vertical-align: bottom"><FONT STYLE="font-size: 10pt">dcampbell@americanmidstream.com</FONT></TD>
<TD> </TD>
<TD>/s/ Daniel C. Campbell</TD></TR>
<TR STYLE="vertical-align: top">
<TD><FONT STYLE="font-size: 10pt">William B. Mathews</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">Vice President, Secretary and General Counsel</FONT></TD>
<TD> </TD>
<TD STYLE="text-align: left; vertical-align: bottom"><FONT STYLE="font-size: 10pt">(720) 457-6075</FONT></TD>
<TD> </TD>
<TD STYLE="text-align: left; vertical-align: bottom"><FONT STYLE="font-size: 10pt">bmathews@americanmidstream.com</FONT></TD>
<TD> </TD>
<TD>/s/ William B. Mathews</TD></TR>
<TR STYLE="vertical-align: top">
<TD><FONT STYLE="font-size: 10pt">Kyle Quackenbush</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">Director of Finance</FONT></TD>
<TD> </TD>
<TD STYLE="text-align: left; vertical-align: bottom"><FONT STYLE="font-size: 10pt">(720) 457-8108</FONT></TD>
<TD> </TD>
<TD STYLE="text-align: left; vertical-align: bottom">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">kquackenbush@americanmidstream.com</P></TD>
<TD> </TD>
<TD>/s/ Kyle Quackenbush</TD></TR>
<TR STYLE="vertical-align: top">
<TD><FONT STYLE="font-size: 10pt">Ryan Newburn</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">Attorney</FONT></TD>
<TD> </TD>
<TD STYLE="text-align: left; vertical-align: bottom"><FONT STYLE="font-size: 10pt">(303) 374-9853</FONT></TD>
<TD> </TD>
<TD STYLE="text-align: left; vertical-align: bottom">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">rnewburn@americanmidstream.com</P></TD>
<TD> </TD>
<TD>/s/ Ryan Newburn</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-align: center; text-indent: -0.25in"><B>Part
II</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-align: center; text-indent: -0.25in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-align: center; text-indent: -0.25in"><B>Name,
Title, Telephone Number and E-mail Address for</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-align: center; text-indent: -0.25in"><B>person(s)
designated to confirm funds transfer instructions</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: bottom">
<TD STYLE="border-bottom: Black 1pt solid; text-align: justify; width: 23%"><FONT STYLE="font-size: 10pt"><B>Name</B></FONT></TD>
<TD STYLE="text-align: justify; width: 2%"> </TD>
<TD STYLE="border-bottom: Black 1pt solid; text-align: justify; width: 29%"><FONT STYLE="font-size: 10pt"><B>Title</B></FONT></TD>
<TD STYLE="text-align: justify; width: 2%"> </TD>
<TD STYLE="border-bottom: Black 1pt solid; text-align: left; vertical-align: bottom; width: 10%"><FONT STYLE="font-size: 10pt"><B>Telephone Number</B></FONT></TD>
<TD STYLE="text-align: justify; width: 2%"> </TD>
<TD STYLE="border-bottom: Black 1pt solid; text-align: left; vertical-align: bottom; width: 20%"><FONT STYLE="font-size: 10pt"><B>Email Address</B></FONT></TD>
<TD STYLE="text-align: justify; width: 2%"> </TD>
<TD STYLE="border-bottom: Black 1pt solid; text-align: justify; width: 10%"><FONT STYLE="font-size: 10pt"><B>Specimen Signature</B></FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD><FONT STYLE="font-size: 10pt">Daniel C. Campbell</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">Senior Vice President and Chief Financial Officer</FONT></TD>
<TD> </TD>
<TD STYLE="text-align: left; vertical-align: bottom"><FONT STYLE="font-size: 10pt">(303) 374-9847</FONT></TD>
<TD> </TD>
<TD STYLE="text-align: left; vertical-align: bottom"><FONT STYLE="font-size: 10pt">dcampbell@americanmidstream.com</FONT></TD>
<TD> </TD>
<TD>/s/ Daniel C. Campbell</TD></TR>
<TR STYLE="vertical-align: top">
<TD><FONT STYLE="font-size: 10pt">Kyle Quackenbush</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">Director of Finance</FONT></TD>
<TD> </TD>
<TD STYLE="text-align: left; vertical-align: bottom"><FONT STYLE="font-size: 10pt">(720) 457-8108</FONT></TD>
<TD> </TD>
<TD STYLE="text-align: left; vertical-align: bottom">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">kquackenbush@americanmidstream.com</P></TD>
<TD> </TD>
<TD>/s/ Kyle Quackenbush</TD></TR>
<TR STYLE="vertical-align: top">
<TD><FONT STYLE="font-size: 10pt">William B. Mathews</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">Vice President, Secretary and General Counsel</FONT></TD>
<TD> </TD>
<TD STYLE="text-align: left; vertical-align: bottom"><FONT STYLE="font-size: 10pt">(720) 457-6075</FONT></TD>
<TD> </TD>
<TD STYLE="text-align: left; vertical-align: bottom"><FONT STYLE="font-size: 10pt">bmathews@americanmidstream.com</FONT></TD>
<TD> </TD>
<TD>/s/ William B. Mathews</TD></TR>
<TR STYLE="vertical-align: top">
<TD><FONT STYLE="font-size: 10pt">Ryan Newburn</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">Attorney</FONT></TD>
<TD> </TD>
<TD STYLE="text-align: left; vertical-align: bottom"><FONT STYLE="font-size: 10pt">(303) 374-9853</FONT></TD>
<TD> </TD>
<TD STYLE="text-align: left; vertical-align: bottom">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">rnewburn@americanmidstream.com</P></TD>
<TD> </TD>
<TD>/s/ Ryan Newburn</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<!-- Field: Page; Sequence: 15; Options: NewSection; Value: 1 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">EXHIBIT B-<!-- Field: Sequence; Type: Arabic; Name: PageNo -->1<!-- Field: /Sequence --></TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Part III</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B><U>Means for delivery of instructions
and/or confirmations</U></B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">The security procedure to be used with respect to funds transfer
instructions is checked below:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Wingdings">x</FONT></TD><TD STYLE="text-align: justify"><I><U>Option 1. Confirmation by telephone call-back</U></I>. The Escrow Agent shall confirm funds
transfer instructions by telephone call-back to a person at the telephone number designated on Part II above. The person confirming
the funds transfer instruction shall be a person other than the person from whom the funds transfer instruction was received, unless
only one person is designated in both Parts I and II of this Exhibit B-1.</TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"></P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Wingdings"><B>x</B></FONT></TD><TD STYLE="text-align: justify">CHECK box, if applicable:</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.75in"></TD><TD STYLE="width: 0in"></TD><TD STYLE="text-align: justify">If the Escrow Agent is unable to obtain confirmation by telephone call-back, the Escrow Agent may,
at its discretion, confirm by e-mail, as described in Option 2.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.75in; text-align: justify; text-indent: -0.25in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Wingdings">¨</FONT></TD><TD STYLE="text-align: justify"><I><U>Option 2. Confirmation by e-mail</U></I>. The Escrow Agent shall confirm funds transfer instructions
by e-mail to a person at the e-mail address specified for such person in Part II of this Exhibit B-1. The person confirming the
funds transfer instruction shall be a person other than the person from whom the funds transfer instruction was received, unless
only one person is designated in both Parts I and II of this Exhibit B-1. AMID understands the risks associated with communicating
sensitive matters, including time sensitive matters, by e-mail. AMID further acknowledges that instructions and data sent by e-mail
may be less confidential or secure than instructions or data transmitted by other methods. The Escrow Agent shall not be liable
for any loss of the confidentiality of instructions and data prior to receipt by the Escrow Agent.</TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"></P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Wingdings">¨</FONT></TD><TD STYLE="text-align: justify">CHECK box, if applicable:</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: -0.25in">If the Escrow Agent is unable
to obtain confirmation by e-mail, the Escrow Agent may, at its discretion, confirm by telephone call-back, as described
in Option 1.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.75in; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Wingdings">¨</FONT></TD><TD STYLE="text-align: justify"><I><U>Option 3. Delivery of funds transfer instructions by password protected file transfer system
only - no confirmation</U></I>. The Escrow Agent offers the option to deliver funds transfer instructions through a password protected
file transfer system. If AMID wishes to use the password protected file transfer system, further instructions will be provided
by the Escrow Agent. If AMID chooses this Option 3, it agrees that no further confirmation of funds transfer instructions will
be performed by the Escrow Agent.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Wingdings">¨</FONT></TD><TD STYLE="text-align: justify"><I><U>Option 4. Delivery of funds transfer instructions by password protected file transfer system
with confirmation</U></I>. Same as Option 3 above, but the Escrow Agent shall confirm funds transfer instructions by <FONT STYLE="font-family: Wingdings">¨</FONT>
telephone call-back or <FONT STYLE="font-family: Wingdings">¨</FONT> e-mail (must check at least one, may check both) to a
person at the telephone number or e-mail address designated on Part II above. By checking a box in the prior sentence, the party
shall be deemed to have agreed to the terms of such confirmation option as more fully described in Option 1 and Option 2 above.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: -0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><B>Dated this 14<SUP>th</SUP> day of October
2014.</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><B> </B></P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 4%; text-align: justify"><FONT STYLE="font-size: 10pt"><B>By </B></FONT></TD>
<TD STYLE="width: 46%; border-bottom: Black 1pt solid; text-align: justify">/s/ Daniel C. Campbell</TD>
<TD STYLE="width: 50%; text-align: justify"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD COLSPAN="2" STYLE="text-align: justify"><FONT STYLE="font-size: 10pt"><B>Name: </B>Daniel C. Campbell</FONT></TD>
<TD STYLE="text-align: justify"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD COLSPAN="2" STYLE="text-align: justify"><FONT STYLE="font-size: 10pt"><B>Title: </B>Senior Vice President and Chief Financial Officer</FONT></TD>
<TD STYLE="text-align: justify"> </TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
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<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">EXHIBIT B-<!-- Field: Sequence; Type: Arabic; Name: PageNo -->1<!-- Field: /Sequence --></TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>EXHIBIT B-2</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Energy Spectrum Partners VI, LP (“Energy
Spectrum”), and Costar Midstream Energy, LLC (“Costar”) (Costar and Energy Spectrum are referred to collectively
as the “Sellers”) certify that the names, titles, telephone numbers, e-mail addresses and specimen signatures set forth
in Parts I and II of this Exhibit B-2 identify the persons authorized to provide direction and initiate or confirm transactions,
including funds transfer instructions, on behalf of Sellers, and that the option checked in Part III of this Exhibit B-2 is the
security procedure selected by Sellers for use in verifying that a funds transfer instruction received by the Escrow Agent is that
of Sellers.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Sellers have reviewed each of the security
procedures and has determined that the option checked in Part III of this Exhibit B-2 best meets its requirements; given the size,
type and frequency of the instructions it will issue to the Escrow Agent. By selecting the security procedure specified in Part
III of this Exhibit B-2, Sellers acknowledge that they have elected to not use the other security procedures described and agrees
to be bound by any funds transfer instruction, whether or not authorized, issued in its name and accepted by the Escrow Agent in
compliance with the particular security procedure chosen by Sellers.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><U>NOTICE</U>: The security procedure selected
by Sellers will not be used to detect errors in the funds transfer instructions given by Sellers. If a funds transfer instruction
describes the beneficiary of the payment inconsistently by name and account number, payment may be made on the basis of the account
number even if it identifies a person different from the named beneficiary. If a funds transfer instruction describes a participating
financial institution inconsistently by name and identification number, the identification number may be relied upon as the proper
identification of the financial institution. Therefore, it is important that Sellers take such steps as it deems prudent to ensure
that there are no such inconsistencies in the funds transfer instructions it sends to the Escrow Agent.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B> </B></P>
<!-- Field: Page; Sequence: 17; Options: NewSection; Value: 2 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">EXHIBIT B-<!-- Field: Sequence; Type: Arabic; Name: PageNo -->2<!-- Field: /Sequence --></TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Part I</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Name, Title, Telephone Number, Electronic
Mail (“e-mail”) Address and Specimen Signature for person(s) designated to provide direction, including but not limited
to funds transfer instructions, and to otherwise act on behalf of </B>Sellers</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR>
<TD STYLE="vertical-align: bottom; border-bottom: Black 1pt solid; text-align: justify"><FONT STYLE="font-size: 10pt"><B>Name</B></FONT></TD>
<TD STYLE="vertical-align: top; text-align: justify"> </TD>
<TD STYLE="vertical-align: bottom; border-bottom: Black 1pt solid; text-align: justify"><FONT STYLE="font-size: 10pt"><B>Title</B></FONT></TD>
<TD STYLE="vertical-align: top; text-align: justify"> </TD>
<TD STYLE="vertical-align: bottom; border-bottom: Black 1pt solid; text-align: justify"><FONT STYLE="font-size: 10pt"><B>Telephone Number</B></FONT></TD>
<TD STYLE="vertical-align: top; text-align: justify"> </TD>
<TD STYLE="vertical-align: bottom; border-bottom: Black 1pt solid; text-align: justify"><FONT STYLE="font-size: 10pt"><B>Email Address</B></FONT></TD>
<TD STYLE="vertical-align: top; text-align: justify"> </TD>
<TD STYLE="vertical-align: bottom; border-bottom: Black 1pt solid; text-align: justify"><FONT STYLE="font-size: 10pt"><B>Specimen Signature</B></FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD><FONT STYLE="font-size: 10pt">James P. Benson</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">Managing Director</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">(214) 987-6103</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">jim.benson@energyspectrum.com</FONT></TD>
<TD> </TD>
<TD>/s/ James P. Benson</TD></TR>
<TR STYLE="vertical-align: top">
<TD><FONT STYLE="font-size: 10pt">Thomas O. Whitener</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">President</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">(214) 987-6105</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">tom.whitener@energyspectrum.com</FONT></TD>
<TD> </TD>
<TD>/s/ Thomas O. Whitener</TD></TR>
<TR STYLE="vertical-align: top">
<TD><FONT STYLE="font-size: 10pt">Chandler A. Phillips</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">Vice President</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">(214) 987-6106</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">chandler.phillips@energyspectrum.com</FONT></TD>
<TD> </TD>
<TD>/s/ Chandler A. Phillips</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-align: center; text-indent: -0.25in"><B>Part
II</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-align: center; text-indent: -0.25in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-align: center; text-indent: -0.25in"><B>Name,
Title, Telephone Number and E-mail Address for</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-align: center; text-indent: -0.25in"><B>person(s)
designated to confirm funds transfer instructions</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR>
<TD STYLE="vertical-align: bottom; border-bottom: Black 1pt solid; text-align: justify"><FONT STYLE="font-size: 10pt"><B>Name</B></FONT></TD>
<TD STYLE="vertical-align: top; text-align: justify"> </TD>
<TD STYLE="vertical-align: bottom; border-bottom: Black 1pt solid; text-align: justify"><FONT STYLE="font-size: 10pt"><B>Title</B></FONT></TD>
<TD STYLE="vertical-align: top; text-align: justify"> </TD>
<TD STYLE="vertical-align: bottom; border-bottom: Black 1pt solid; text-align: justify"><FONT STYLE="font-size: 10pt"><B>Telephone Number</B></FONT></TD>
<TD STYLE="vertical-align: top; text-align: justify"> </TD>
<TD STYLE="vertical-align: bottom; border-bottom: Black 1pt solid; text-align: justify"><FONT STYLE="font-size: 10pt"><B>Email Address</B></FONT></TD>
<TD STYLE="vertical-align: top; text-align: justify"> </TD>
<TD STYLE="vertical-align: bottom; border-bottom: Black 1pt solid; text-align: justify"><FONT STYLE="font-size: 10pt"><B>Specimen Signature</B></FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD><FONT STYLE="font-size: 10pt">James P. Benson</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">Managing Director</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">(214) 987-6103</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">jim.benson@energyspectrum.com</FONT></TD>
<TD> </TD>
<TD>/s/ James P. Benson</TD></TR>
<TR STYLE="vertical-align: top">
<TD><FONT STYLE="font-size: 10pt">Thomas O. Whitener</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">President</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">(214) 987-6105</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">tom.whitener@energyspectrum.com</FONT></TD>
<TD> </TD>
<TD>/s/ Thomas O. Whitener</TD></TR>
<TR STYLE="vertical-align: top">
<TD><FONT STYLE="font-size: 10pt">Chandler A. Phillips</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">Vice President</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">(214) 987-6106</FONT></TD>
<TD> </TD>
<TD><FONT STYLE="font-size: 10pt">chandler.phillips@energyspectrum.com</FONT></TD>
<TD> </TD>
<TD>/s/ Chandler A. Phillips</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in"> </P>
<!-- Field: Page; Sequence: 18; Options: NewSection; Value: 2 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">EXHIBIT B-<!-- Field: Sequence; Type: Arabic; Name: PageNo -->2<!-- Field: /Sequence --></TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Part III</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-align: center; text-indent: -0.25in"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B><U>Means for delivery of instructions
and/or confirmations </U></B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">The security procedure to be used with respect to funds transfer
instructions is checked below:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-indent: -0.25in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Wingdings">¨</FONT></TD><TD STYLE="text-align: justify"><I><U>Option 1. Confirmation by telephone call-back</U></I>. The Escrow Agent shall confirm funds
transfer instructions by telephone call-back to a person at the telephone number designated on Part II above. The person confirming
the funds transfer instruction shall be a person other than the person from whom the funds transfer instruction was received, unless
only one person is designated in both Parts I and II of this Exhibit B-2.</TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"></P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Wingdings"><B>¨</B></FONT></TD><TD STYLE="text-align: justify">CHECK box, if applicable:</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.75in"></TD><TD STYLE="width: 0in"></TD><TD STYLE="text-align: justify">If the Escrow Agent is unable to obtain confirmation by telephone call-back, the Escrow Agent may,
at its discretion, confirm by e-mail, as described in Option 2.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.75in; text-align: justify; text-indent: -0.25in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Wingdings">x</FONT></TD><TD STYLE="text-align: justify"><I><U>Option 2. Confirmation by e-mail</U></I>. The Escrow Agent shall confirm funds transfer instructions
by e-mail to a person at the e-mail address specified for such person in Part II of this Exhibit B-2. The person confirming the
funds transfer instruction shall be a person other than the person from whom the funds transfer instruction was received, unless
only one person is designated in both Parts I and II of this Exhibit B-2. Sellers understand the risks associated with communicating
sensitive matters, including time sensitive matters, by e-mail. Sellers further acknowledge that instructions and data sent by
e-mail may be less confidential or secure than instructions or data transmitted by other methods. The Escrow Agent shall not be
liable for any loss of the confidentiality of instructions and data prior to receipt by the Escrow Agent.</TD></TR></TABLE>
<P STYLE="margin-top: 0pt; margin-bottom: 0pt; font: 10pt Times New Roman, Times, Serif"></P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Wingdings">x</FONT></TD><TD STYLE="text-align: justify">CHECK box, if applicable:</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.75in; text-align: justify">If the Escrow Agent is unable
to obtain confirmation by e-mail, the Escrow Agent may, at its discretion, confirm by telephone call-back, as described
in Option 1.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.75in; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Wingdings">¨</FONT></TD><TD STYLE="text-align: justify"><I><U>Option 3. Delivery of funds transfer instructions by password protected file transfer system
only - no confirmation</U></I>. The Escrow Agent offers the option to deliver funds transfer instructions through a password protected
file transfer system. If Sellers wish to use the password protected file transfer system, further instructions will be provided
by the Escrow Agent. If Sellers choose this Option 3, they agree that no further confirmation of funds transfer instructions will
be performed by the Escrow Agent.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.25in; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Wingdings">¨</FONT></TD><TD STYLE="text-align: justify"><I><U>Option 4. Delivery of funds transfer instructions by password protected file transfer system
with confirmation</U></I>. Same as Option 3 above, but the Escrow Agent shall confirm funds transfer instructions by <FONT STYLE="font-family: Wingdings">¨</FONT>
telephone call-back or <FONT STYLE="font-family: Wingdings">¨</FONT> e-mail (must check at least one, may check both) to a
person at the telephone number or e-mail address designated on Part II above. By checking a box in the prior sentence, the party
shall be deemed to have agreed to the terms of such confirmation option as more fully described in Option 1 and Option 2 above.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify; text-indent: -0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: center; text-indent: -0.5in">[<I>Signature
Page Follows</I>]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B> </B></P>
<!-- Field: Page; Sequence: 19; Options: NewSection; Value: 2 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">EXHIBIT B-<!-- Field: Sequence; Type: Arabic; Name: PageNo -->2<!-- Field: /Sequence --></TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><B>Dated this ____ day of ___________,
20__.</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><B> </B></P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD COLSPAN="2"><FONT STYLE="font-size: 10pt">ENERGY SPECTRUM PARTNERS VI LP</FONT></TD>
<TD> </TD></TR>
<TR STYLE="vertical-align: top">
<TD COLSPAN="2" STYLE="text-align: center"> </TD>
<TD STYLE="text-align: center"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD COLSPAN="2">By: Energy Spectrum Capital VI LP, its general partner</TD>
<TD> </TD></TR>
<TR STYLE="vertical-align: top">
<TD COLSPAN="2"> </TD>
<TD> </TD></TR>
<TR STYLE="vertical-align: top">
<TD COLSPAN="2">By: Energy Spectrum VI LLC, its general partner</TD>
<TD> </TD></TR>
<TR STYLE="vertical-align: top">
<TD COLSPAN="2"> </TD>
<TD> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="width: 4%">By:</TD>
<TD STYLE="border-bottom: Black 1pt solid; width: 46%">/s/ James P. Benson</TD>
<TD STYLE="width: 50%"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD COLSPAN="2">Name: James P. Benson</TD>
<TD> </TD></TR>
<TR STYLE="vertical-align: top">
<TD COLSPAN="2" STYLE="text-align: justify">Title: Managing Director</TD>
<TD STYLE="text-align: justify"> </TD></TR>
<TR>
<TD> </TD>
<TD> </TD>
<TD> </TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD COLSPAN="2"><FONT STYLE="font-size: 10pt">COSTAR MIDSTREAM ENERGY, LLC.</FONT></TD>
<TD> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="width: 8%; text-align: center"> </TD>
<TD STYLE="width: 42%; text-align: center"> </TD>
<TD STYLE="width: 50%; text-align: center"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD><FONT STYLE="font-size: 10pt">By:</FONT></TD>
<TD STYLE="border-bottom: Black 1pt solid">/s/ Kevin Sullivan</TD>
<TD> </TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD> </TD>
<TD> </TD></TR>
<TR STYLE="vertical-align: top">
<TD><FONT STYLE="font-size: 10pt">Name:</FONT></TD>
<TD STYLE="border-bottom: Black 1pt solid">Kevin Sullivan</TD>
<TD> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="text-align: center"> </TD>
<TD STYLE="text-align: center"> </TD>
<TD STYLE="text-align: center"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD><FONT STYLE="font-size: 10pt">Title:</FONT></TD>
<TD STYLE="border-bottom: Black 1pt solid">Manager</TD>
<TD> </TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<!-- Field: Page; Sequence: 20; Options: NewSection; Value: 2 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">EXHIBIT B-<!-- Field: Sequence; Type: Arabic; Name: PageNo -->2<!-- Field: /Sequence --></TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>EXHIBIT D-1</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM OF FIRST RELEASE INSTRUCTIONS</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>First Release Instructions</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">[Date]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Wells Fargo Bank, NA</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Attention: [<U> </U>]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 36pt"></TD><TD STYLE="width: 27pt">Re:</TD><TD STYLE="text-align: justify">Release of units representing limited partnership interests (“Common Units”) of American
Midstream Partners, LP (“AMID LP”)</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 63pt; text-indent: -27pt"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Ladies and Gentlemen:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Reference is made to
that certain Escrow Agreement, dated as of October __, 2014, by and among Costar Midstream Energy, LLC, a Texas limited liability
company, Energy Spectrum Partners VI LP, a Delaware limited partnership, American Midstream, LLC, a Delaware limited liability
company, and Wells Fargo Bank, National Association, as Escrow Agent (the “Agreement”). Capitalized terms used but
not otherwise defined herein shall have the meanings set forth in the Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Pursuant to Section
1.3(b)(i) of the Agreement, you are hereby directed to mail, via overnight delivery service, (i) certificate number [__], in the
name of Costar Midstream Energy, LLC, representing [_________] Common Units, (ii) certificate number [__], in the name of Energy
Spectrum Partners VI LP, representing [_________] Common Units and (iii) the instruction letter from AMID LP set forth as Attachment
A hereto (“Instruction Letter”) to:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">[Transfer Agent]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">Attention: [________]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Upon [Transfer Agent’s]
processing of the instructions set forth in the Instruction Letter, you shall receive from the Transfer Agent:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: -0.5in">(i) one
certificate in the name of Costar Midstream Energy, LLC, representing [_________] Common Units; and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: -0.5in">(ii) one
certificate Costar Midstream Energy, LLC, representing [_________] Common Units.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<!-- Field: Page; Sequence: 1; Options: NewSection; Value: 1 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">EXHIBIT D-<!-- Field: Sequence; Type: Arabic; Name: PageNo -->1<!-- Field: /Sequence --></TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">You are hereby directed to maintain such
certificates in escrow as Escrow Units pursuant to the terms of the Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">This letter of instruction
may be executed in two or more counterparts, each of which shall be an original, but all of which shall constitute one and the
same letter of instruction.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Please confirm the
instructions contained in this letter of instruction through the procedures set forth in Exhibit B-1 and Exhibit B-2 of the Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 31.5pt"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">*****</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">By the signatures affixed below, the parties
agree to this letter of instruction and consent to its terms.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD COLSPAN="2"><FONT STYLE="font-variant: small-caps">Energy Spectrum Partners VI LP, </FONT>on behalf of itself and in its capacity as attorney-in-fact of <FONT STYLE="font-variant: small-caps">Costar Midstream Energy, LLC</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD COLSPAN="2"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD STYLE="width: 50%"> </TD>
<TD STYLE="width: 4%">By:</TD>
<TD STYLE="width: 46%">Energy Spectrum Capital VI LP</TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD> </TD>
<TD>its general partner</TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD COLSPAN="2"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD>By:</TD>
<TD>Energy Spectrum VI LLC</TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD> </TD>
<TD>its general partner</TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD COLSPAN="2"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD>By:</TD>
<TD STYLE="border-bottom: Black 1pt solid"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD>Name:</TD>
<TD> </TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD>Title:</TD>
<TD> </TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD> </TD>
<TD> </TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD COLSPAN="2"><FONT STYLE="font-variant: small-caps">American Midstream, LLC</FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD> </TD>
<TD> </TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD>By:</TD>
<TD STYLE="border-bottom: Black 1pt solid"> </TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD>Name:</TD>
<TD> </TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD>Title:</TD>
<TD> </TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"> </P>
<!-- Field: Page; Sequence: 1; Value: 1 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">EXHIBIT D-<!-- Field: Sequence; Type: Arabic; Name: PageNo -->1<!-- Field: /Sequence --></TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Attachment A</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Instruction Letter</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>[Letterhead of American Midstream Partners,
LP]</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Date]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Transfer Agent]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">RE:</TD><TD STYLE="text-align: justify">Letter of instruction</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Dear Ladies and Gentlemen:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Enclosed herewith are the following certificates:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in; text-align: left">(i)</TD><TD STYLE="text-align: justify">certificate number [__] in the name of Costar Midstream
Energy, LLC, representing [_________] common units, representing limited partnership interests of American Midstream Partners,
LP (“Common Units”); and</TD>
</TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="text-align: justify; width: 0.5in"></TD><TD STYLE="width: 0.5in; text-align: left">(ii)</TD><TD STYLE="text-align: justify">certificate number [__] in the name of Energy Spectrum
Partners VI LP, representing [_________] Common Units.</TD>
</TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">You are hereby directed to break up certificate
number [__] in the name of Costar Midstream Energy, LLC, representing [_________] Common Units, and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in; text-align: left">(i)</TD><TD STYLE="text-align: justify">convert [_________] Common Units, into electronic book
entry form and credit such Common Units to the individual account of Costar Midstream Energy, LLC with an issue date of November
8, 2014, maintaining the restrictions set forth in the legends to such Common Units;</TD>
</TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in; text-align: left">(ii)</TD><TD STYLE="text-align: justify">convert [_________] Common Units, into electronic book
entry form and credit such Common Units to the individual account of Energy Spectrum Partners VI LP with an issue date of November
8, 2014, maintaining the restrictions set forth in the legends to such Common Units; and</TD>
</TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in; text-align: left">(iii)</TD><TD STYLE="text-align: justify">issue, effective November 8, 2014, one physical certificate,
in the name of Costar Midstream Energy, LLC representing [_________] Common Units printed with Legends [A, B and C] on as set
forth on Exhibit A attached hereto (such certificate, the “New Costar Certificate”).</TD>
</TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">You are hereby further directed to break
up certificate number [__] in the name of Energy Spectrum Partners VI LP, representing [_________] Common Units, and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in; text-align: left">(i)</TD><TD STYLE="text-align: justify">convert [_________] Common Units, into electronic book
entry form and credit such Common Units to the individual account of Energy Spectrum Partners VI LP with an issue date of November
8, 2014, maintaining the restrictions set forth in the legends to such Common Units;</TD>
</TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<!-- Field: Page; Sequence: 1; Value: 1 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">EXHIBIT D-<!-- Field: Sequence; Type: Arabic; Name: PageNo -->1<!-- Field: /Sequence --></TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in; text-align: left">(ii)</TD><TD STYLE="text-align: justify">convert [_________] Common Units, into electronic book
entry form and credit such Common Units to the individual account of Costar Midstream Energy, LLC with an issue date of November
8, 2014, maintaining the restrictions set forth in the legends to such Common Units; and</TD>
</TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in; text-align: left">(iii)</TD><TD STYLE="text-align: justify">issue, effective November 8, 2014, one physical certificate,
in the name of Energy Spectrum Partners VI LP representing [_________] Common Units printed with Legends [A, B and C] on as set
forth on Exhibit A attached hereto (such certificate, the “New Energy Spectrum Certificate”).</TD>
</TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Each of the New Costar Certificate and
the New Energy Spectrum Certificate is to be mailed, via next day delivery service, to:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">Wells Fargo National Banking
Association</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">Attn: [______________]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">[Phone Number]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">As Vice President, General Counsel and
Secretary of American Midstream Partners GP, LLC, general partner of American Midstream Partners, LP, I hereby approve the instructions
contained herein.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Sincerely,</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">William B. Mathews</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Secretary, General Counsel and Vice President</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">American Midstream GP, LLC, general partner of</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">American Midstream Partners, LP</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<!-- Field: Page; Sequence: 1; Value: 1 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">EXHIBIT D-<!-- Field: Sequence; Type: Arabic; Name: PageNo -->1<!-- Field: /Sequence --></TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Exhibit A</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Legends</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>[See Attached]</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<!-- Field: Page; Sequence: 1; Value: 1 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">EXHIBIT D-<!-- Field: Sequence; Type: Arabic; Name: PageNo -->1<!-- Field: /Sequence --></TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>EXHIBIT D-2</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM OF SECOND RELEASE INSTRUCTIONS</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Second Release Instructions</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">[Date]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Wells Fargo Bank, NA</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Attention: [_________]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 36pt"></TD><TD STYLE="width: 27pt">Re:</TD><TD STYLE="text-align: justify">Release of units representing limited partnership interests (“Common Units”) of American
Midstream Partners, LP (“AMID LP”)</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 63pt; text-indent: -27pt"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Ladies and Gentlemen:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Reference is made to
that certain Escrow Agreement, dated as of October __, 2014, by and among Costar Midstream Energy, LLC, a Texas limited liability
company, Energy Spectrum Partners VI LP, a Delaware limited partnership, American Midstream, LLC, a Delaware limited liability
company, and Wells Fargo Bank, National Association, as Escrow Agent (the “Agreement”). Capitalized terms used but
not otherwise defined herein shall have the meanings set forth in the Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Pursuant to Section
1.3(b)(ii) of the Agreement, you are hereby directed to mail, via overnight delivery service, (i) certificate number [__], in the
name of Costar Midstream Energy, LLC, representing [_________] Common Units, (ii) certificate number [__], in the name of Energy
Spectrum Partners VI LP, representing [_________] Common Units and (iii) the instruction letter from AMID LP set forth as Attachment
A hereto (“Instruction Letter”) to:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">[Transfer Agent]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">Attention: [________]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Upon [Transfer Agent’s]
processing of the instructions set forth in the Instruction Letter, you shall receive from the Transfer Agent:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(i)</TD><TD STYLE="text-align: justify">one certificate in the name of Costar Midstream Energy, LLC, representing [_________] Common Units;
and</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(ii)</TD><TD STYLE="text-align: justify">one certificate Costar Midstream Energy, LLC, representing [_________] Common Units.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<!-- Field: Page; Sequence: 1 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-2</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">You are hereby directed to maintain such
certificates in escrow as Escrow Units pursuant to the terms of the Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">This letter of instruction
may be executed in two or more counterparts, each of which shall be an original, but all of which shall constitute one and the
same letter of instruction.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Please confirm the
instructions contained in this letter of instruction through the procedures set forth in Exhibit B-1 and Exhibit B-2 of the Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 31.5pt"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">*****</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">By the signatures affixed below, the parties
agree to this letter of instruction and consent to its terms.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps"> </FONT></P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"><font style="font-variant: small-caps">Energy Spectrum Partners VI LP, </font>on behalf of itself and in its capacity as attorney-in-fact of <font style="font-variant: small-caps">Costar Midstream Energy, LLC</font></td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD STYLE="width: 50%"> </td>
<TD STYLE="width: 5%">By:</td>
<TD STYLE="width: 45%">Energy Spectrum Capital VI LP</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD> </td>
<TD>its general partner</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD>By:</td>
<TD>Energy Spectrum VI LLC</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD> </td>
<TD>its general partner</td></tr>
</table>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<tr style="vertical-align: top">
<TD STYLE="width: 52%"> </td>
<TD STYLE="width: 5%">By:</td>
<TD STYLE="width: 43%; border-bottom: Black 1pt solid"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2">Name:</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2">Title:</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"><font style="font-variant: small-caps">American Midstream, LLC</font></td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD>By:</td>
<TD STYLE="border-bottom: Black 1pt solid"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2">Name:</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2">Title:</td></tr>
</table>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"> </P>
<!-- Field: Page; Sequence: 2 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-2</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Attachment A</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Instruction Letter</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>[Letterhead of American Midstream Partners,
LP]</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Date]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Transfer Agent]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">RE:</TD><TD STYLE="text-align: justify">Letter of instruction</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: -0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Dear Ladies and Gentlemen:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Enclosed herewith are the following certificates:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(i)</TD><TD STYLE="text-align: justify">certificate number [__] in the name of Costar Midstream Energy, LLC, representing [_________] common
units, representing limited partnership interests of American Midstream Partners, LP (“Common Units”); and</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(ii)</TD><TD STYLE="text-align: justify">certificate number [__] in the name of Energy Spectrum Partners VI LP, representing [_________]
Common Units.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">You are hereby directed to break up certificate
number [__] in the name of Costar Midstream Energy, LLC, representing [_________] Common Units, and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(i)</TD><TD STYLE="text-align: justify">convert [_________] Common Units, into electronic book entry form and credit such Common Units
to the individual account of Costar Midstream Energy, LLC with an issue date of November 8, 2014, maintaining the restrictions
set forth in the legends to such Common Units;</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(ii)</TD><TD STYLE="text-align: justify">convert [_________] Common Units, into electronic book entry form and credit such Common Units
to the individual account of Energy Spectrum Partners VI LP with an issue date of November 8, 2014, maintaining the restrictions
set forth in the legends to such Common Units; and</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(iii)</TD><TD STYLE="text-align: justify">issue, effective November 8, 2014, one physical certificate, in the name of Costar Midstream Energy,
LLC representing [_________] Common Units printed with Legends [A, B and C] on as set forth on Exhibit A attached hereto (such
certificate, the “New Costar Certificate”).</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">You are hereby further directed to break
up certificate number [__] in the name of Energy Spectrum Partners VI LP, representing [_________] Common Units, and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(i)</TD><TD STYLE="text-align: justify">convert [_________] Common Units, into electronic book entry form and credit such Common Units
to the individual account of Energy Spectrum Partners VI LP with an issue date of November 8, 2014, maintaining the restrictions
set forth in the legends to such Common Units;</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: -0.5in"> </P>
<!-- Field: Page; Sequence: 3 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-2</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: -0.5in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(ii)</TD><TD STYLE="text-align: justify">convert [_________] Common Units, into electronic book entry form and credit such Common Units
to the individual account of Costar Midstream Energy, LLC with an issue date of November 8, 2014, maintaining the restrictions
set forth in the legends to such Common Units; and</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(iii)</TD><TD STYLE="text-align: justify">issue, effective November 8, 2014, one physical certificate, in the name of Energy Spectrum Partners
VI LP representing [_________] Common Units printed with Legends [A, B and C] on as set forth on Exhibit A attached hereto (such
certificate, the “New Energy Spectrum Certificate”).</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Each of the New Costar Certificate and
the New Energy Spectrum Certificate is to be mailed, via next day delivery service, to:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">Wells Fargo National Banking
Association</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">Attn: [______________]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">[Phone Number]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">As Vice President, General Counsel and
Secretary of American Midstream Partners GP, LLC, general partner of American Midstream Partners, LP, I hereby approve the instructions
contained herein.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Sincerely,</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">William B. Mathews</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Secretary, General Counsel and Vice President</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">American Midstream GP, LLC, general partner of</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">American Midstream Partners, LP</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<!-- Field: Page; Sequence: 4 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-2</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Exhibit A</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Legends</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>[See Attached]</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<!-- Field: Page; Sequence: 5 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-2</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>EXHIBIT D-3</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM OF FINAL RELEASE INSTRUCTIONS</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Final Release Instructions</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">[Date]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Wells Fargo Bank, NA</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Attention: [_________]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 36pt"></TD><TD STYLE="width: 27pt">Re:</TD><TD STYLE="text-align: justify">Release of units representing limited partnership interests (“Common Units”) of American
Midstream Partners, LP (“AMID LP”) and all interest, distributions and earnings thereon</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 63pt; text-indent: -27pt"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Ladies and Gentlemen:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Reference is made to
that certain Escrow Agreement, dated as of October __, 2014, by and among Costar Midstream Energy, LLC, a Texas limited liability
company, Energy Spectrum Partners VI LP, a Delaware limited partnership, American Midstream, LLC, a Delaware limited liability
company, and Wells Fargo Bank, National Association, as Escrow Agent (the “Agreement”). Capitalized terms used but
not otherwise defined herein shall have the meanings set forth in the Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Pursuant to Section
1.3(b)(iii) of the Agreement, you are hereby directed to mail, via overnight delivery service, (i) certificate number [__], in
the name of Costar Midstream Energy, LLC, representing [_________] Common Units, (ii) certificate number [__], in the name of Energy
Spectrum Partners VI LP, representing [_________] Common Units and (iii) the instruction letter from AMID LP set forth as Attachment
A hereto (“Instruction Letter”) to:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">[Transfer Agent]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">Attention: [________]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Furthermore, you are
hereby directed to deliver the remaining Escrow Cash, if any, in the Escrow Account on the date of your receipt of this notice
plus any final investment income earned following the date of your receipt of this notice, by wire transfer of immediately available
funds to the accounts, and in the percentages, set forth below.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<!-- Field: Page; Sequence: 6 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-3</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<tr style="vertical-align: top">
<TD STYLE="width: 45%; text-align: justify">[Costar Percentage]</td>
<TD STYLE="width: 5%; text-align: justify"> </td>
<TD STYLE="width: 50%; text-align: justify">[Energy Spectrum Percentage]</td></tr>
<tr style="vertical-align: top">
<TD STYLE="text-align: justify">[Costar Wiring Instructions]</td>
<TD STYLE="text-align: justify"> </td>
<TD STYLE="text-align: justify">[Energy Spectrum Wiring Instructions]</td></tr>
<tr style="vertical-align: top">
<TD STYLE="text-align: justify">[Costar Wiring Instructions]</td>
<TD STYLE="text-align: justify"> </td>
<TD STYLE="text-align: justify">[Energy Spectrum Wiring Instructions]</td></tr>
<tr style="vertical-align: top">
<TD STYLE="text-align: justify">[Costar Wiring Instructions]</td>
<TD STYLE="text-align: justify"> </td>
<TD STYLE="text-align: justify">[Energy Spectrum Wiring Instructions]</td></tr>
<tr style="vertical-align: top">
<TD STYLE="text-align: justify">[Costar Wiring Instructions]</td>
<TD STYLE="text-align: justify"> </td>
<TD STYLE="text-align: justify">[Energy Spectrum Wiring Instructions]</td></tr>
</table>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">This letter of instruction
may be executed in two or more counterparts, each of which shall be an original, but all of which shall constitute one and the
same letter of instruction.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Please confirm the
instructions contained in this letter of instruction through the procedures set forth in Exhibit B-1 and Exhibit B-2 of the Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 31.5pt"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">*****</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">By the signatures affixed below, the parties
agree to this letter of instruction and consent to its terms.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps"> </FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"><font style="font-variant: small-caps">Energy Spectrum Partners VI LP, </font>on behalf of itself and in its capacity as attorney-in-fact of <font style="font-variant: small-caps">Costar Midstream Energy, LLC</font></td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD STYLE="width: 50%"> </td>
<TD STYLE="width: 5%">By:</td>
<TD STYLE="width: 45%">Energy Spectrum Capital VI LP</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD> </td>
<TD>its general partner</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD>By:</td>
<TD>Energy Spectrum VI LLC</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD> </td>
<TD>its general partner</td></tr>
</table>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<tr style="vertical-align: top">
<TD STYLE="width: 52%"> </td>
<TD STYLE="width: 5%">By:</td>
<TD STYLE="border-bottom: Black 1pt solid; width: 43%"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2">Name:</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2">Title:</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"><font style="font-variant: small-caps">American Midstream, LLC</font></td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD>By:</td>
<TD STYLE="border-bottom: Black 1pt solid"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD COLSPAN="2">Name:</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2">Title:</td></tr>
</table>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"> </P>
<!-- Field: Page; Sequence: 7 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-3</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Attachment A</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Instruction Letter</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>[Letterhead of American Midstream Partners,
LP]</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Date]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Transfer Agent]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">RE:</TD><TD STYLE="text-align: justify">Letter of instruction</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: -0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Dear Ladies and Gentlemen:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Enclosed herewith are the following certificates:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(i)</TD><TD STYLE="text-align: justify">certificate number [__] in the name of Costar Midstream Energy, LLC, representing [_________] common
units, representing limited partnership interests of American Midstream Partners, LP (“Common Units”); and</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(ii)</TD><TD STYLE="text-align: justify">certificate number [__] in the name of Energy Spectrum Partners VI LP, representing [_________]
Common Units.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">You are hereby directed to convert certificate
number [__] in the name of Costar Midstream Energy, LLC, representing [_________] Common Units, into electronic book entry form
and credit [_________] such Common Units to the individual account of Costar Midstream Energy, LLC and [_________] such Common
Units to the individual account of Energy Spectrum Partners VI LP each with an issue date of November 8, 2014, maintaining the
restrictions set forth in the legends to such Common Units.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">You are hereby further directed to convert
certificate number [__] in the name of Energy Spectrum Partners VI LP, representing [_________] Common Units, into electronic book
entry form and credit [_________] such Common Units to the individual account of Energy Spectrum Partners VI LP and [_________]
such Common Units to the individual account of Costar Midstream Energy, LLC each with an issue date of November 8, 2014, maintaining
the restrictions set forth in the legends to such Common Units.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">As Vice President, General Counsel and
Secretary of American Midstream Partners GP, LLC, general partner of American Midstream Partners, LP, I hereby approve the instructions
contained herein.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<!-- Field: Page; Sequence: 8 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-3</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Sincerely,</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">William B. Mathews</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Secretary, General Counsel and Vice President</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">American Midstream GP, LLC, general partner of</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">American Midstream Partners, LP</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<!-- Field: Page; Sequence: 9 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-3</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>EXHIBIT D-4</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM OF ADDITIONAL RELEASE INSTRUCTIONS</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Additional Release Instructions</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">[Date]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Wells Fargo Bank, NA</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Attention: [_________]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 36pt"></TD><TD STYLE="width: 27pt">Re:</TD><TD STYLE="text-align: justify">Release of units representing limited partnership interests (“Common Units”) of American
Midstream Partners, LP (“AMID LP”)</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 63pt; text-indent: -27pt"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Ladies and Gentlemen:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Reference is made to
that certain Escrow Agreement, dated as of October __, 2014, by and among Costar Midstream Energy, LLC, a Texas limited liability
company, Energy Spectrum Partners VI LP, a Delaware limited partnership, American Midstream, LLC, a Delaware limited liability
company, and Wells Fargo Bank, National Association, as Escrow Agent (the “Agreement”). Capitalized terms used but
not otherwise defined herein shall have the meanings set forth in the Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Pursuant to Section
1.3(b)(iv) of the Agreement, you are hereby directed to mail, via overnight delivery service, (i) certificate number [__], in the
name of Costar Midstream Energy, LLC, representing [_________] Common Units, (ii) certificate number [__], in the name of Energy
Spectrum Partners VI LP, representing [_________] Common Units and (iii) the instruction letter from AMID LP set forth as Attachment
A hereto (“Instruction Letter”) to:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">[Transfer Agent]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">Attention: [________]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Upon [Transfer Agent’s]
processing of the instructions set forth in the Instruction Letter, you shall receive:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(i)</TD><TD STYLE="text-align: justify">one certificate in the name of Costar Midstream Energy, LLC, representing [_________] Common Units;
and</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(ii)</TD><TD STYLE="text-align: justify">one certificate in the name of Energy Spectrum Partners VI LP, representing [_________] Common
Units.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
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<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-4</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">You are hereby directed to maintain such
certificates in escrow pursuant to the terms of the Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">This letter of instruction
may be executed in two or more counterparts, each of which shall be an original, but all of which shall constitute one and the
same letter of instruction.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Please confirm the
instructions contained in this letter of instruction through the procedures set forth in Exhibit B-1 and Exhibit B-2 of the Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 31.5pt"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">*****</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">By the signatures affixed below, the parties
agree to this letter of instruction and consent to its terms.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps"> </FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"><font style="font-variant: small-caps">Energy Spectrum Partners VI LP, </font>on behalf of itself and in its capacity as attorney-in-fact of <font style="font-variant: small-caps">Costar Midstream Energy, LLC</font></td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD STYLE="width: 50%"> </td>
<TD STYLE="width: 5%">By:</td>
<TD STYLE="width: 45%">Energy Spectrum Capital VI LP</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD> </td>
<TD>its general partner</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD>By:</td>
<TD>Energy Spectrum VI LLC</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD> </td>
<TD>its general partner</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD>By:</td>
<TD STYLE="border-bottom: Black 1pt solid"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2">Name:</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2">Title:</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"><font style="font-variant: small-caps">American Midstream, LLC</font></td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD>By:</td>
<TD STYLE="border-bottom: Black 1pt solid"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2">Name:</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2">Title:</td></tr>
</table>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"> </P>
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<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-4</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Attachment A</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Instruction Letter</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>[Letterhead of American Midstream Partners,
LP]</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Date]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Transfer Agent]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">RE:</TD><TD STYLE="text-align: justify">Letter of instruction</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: -0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Dear Ladies and Gentlemen:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Enclosed herewith are the following certificates:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(i)</TD><TD STYLE="text-align: justify">certificate number [__] in the name of Costar Midstream Energy, LLC, representing [_________] common
units, representing limited partnership interests of American Midstream Partners, LP (“Common Units”); and</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(ii)</TD><TD STYLE="text-align: justify">certificate number [__] in the name of Energy Spectrum Partners VI LP, representing [_________]
Common Units.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">You are hereby directed to break up certificate
number [__] in the name of Costar Midstream Energy, LLC, representing [_________] Common Units, and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(i)</TD><TD STYLE="text-align: justify">convert [_________] Common Units, into electronic book entry form and credit such Common Units
to the individual account of Costar Midstream Energy, LLC with an issue date of November 8, 2014, maintaining the restrictions
set forth in the legends to such Common Units;</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(ii)</TD><TD STYLE="text-align: justify">convert [_________] Common Units, into electronic book entry form and credit such Common Units
to the individual account of Energy Spectrum Partners VI LP with an issue date of November 8, 2014, maintaining the restrictions
set forth in the legends to such Common Units; and</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(iii)</TD><TD STYLE="text-align: justify">issue, effective November 8, 2014, one physical certificate, in the name of Costar Midstream Energy,
LLC representing [_________] Common Units printed with Legends [A, B and C] on as set forth on Exhibit A attached hereto (such
certificate, the “New Costar Certificate”).</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">You are hereby further directed to break
up certificate number [__] in the name of Energy Spectrum Partners VI LP, representing [_________] Common Units, and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(i)</TD><TD STYLE="text-align: justify">convert [_________] Common Units, into electronic book entry form and credit such Common Units
to the individual account of Energy Spectrum Partners VI LP with an issue date of November 8, 2014, maintaining the restrictions
set forth in the legends to such Common Units;</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: -0.5in"> </P>
<!-- Field: Page; Sequence: 12 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-4</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: -0.5in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(ii)</TD><TD STYLE="text-align: justify">convert [_________] Common Units, into electronic book entry form and credit such Common Units
to the individual account of Costar Midstream Energy, LLC with an issue date of November 8, 2014, maintaining the restrictions
set forth in the legends to such Common Units; and</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(iii)</TD><TD STYLE="text-align: justify">issue, effective November 8, 2014, one physical certificate, in the name of Energy Spectrum Partners
VI LP representing [_________] Common Units printed with Legends [A, B and C] on as set forth on Exhibit A attached hereto (such
certificate, the “New Energy Spectrum Certificate”).</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Each of the New Costar Certificate and
the New Energy Spectrum Certificate is to be mailed, via next day delivery service, to:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">Wells Fargo National Banking
Association</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">Attn: [______________]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">[Phone Number]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">As Vice President, General Counsel and
Secretary of American Midstream Partners GP, LLC, general partner of American Midstream Partners, LP, I hereby approve the instructions
contained herein.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Sincerely,</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">William B. Mathews</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Secretary, General Counsel and Vice President</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">American Midstream GP, LLC, general partner of</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">American Midstream Partners, LP</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<!-- Field: Page; Sequence: 13 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-4</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Exhibit A</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Legends</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>[See Attached]</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<!-- Field: Page; Sequence: 14 -->
<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-4</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>EXHIBIT D-5</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM OF INDEMNITY RELEASE INSTRUCTIONS</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Indemnity Release Instructions</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">[Date]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Wells Fargo Bank, NA</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Attention: [_________]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 36pt"></TD><TD STYLE="width: 27pt">Re:</TD><TD STYLE="text-align: justify">Release of units representing limited partnership interests (“Common Units”) of American
Midstream Partners, LP (“AMID LP”) and all interest, distributions and earnings thereon</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 63pt; text-indent: -27pt"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Ladies and Gentlemen:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Reference is made to
that certain Escrow Agreement, dated as of October __, 2014, by and among Costar Midstream Energy, LLC, a Texas limited liability
company, Energy Spectrum Partners VI LP, a Delaware limited partnership, American Midstream, LLC, a Delaware limited liability
company, and Wells Fargo Bank, National Association, as Escrow Agent (the “Agreement”). Capitalized terms used but
not otherwise defined herein shall have the meanings set forth in the Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Pursuant to Section
1.3(b)(v) of the Agreement, you are hereby directed to deliver $[____________] from the Escrow Cash, by wire transfer of immediately
available funds to the account set forth below:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">[AMID Wiring Instructions]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">[AMID Wiring Instructions]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">[AMID Wiring Instructions]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">[AMID Wiring Instructions]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">You are further directed
to mail, via overnight delivery service, (i) certificate number [__], in the name of Costar Midstream Energy, LLC, representing
[_________] Common Units, (ii) certificate number [__], in the name of Energy Spectrum Partners VI LP, representing [_________]
Common Units and (iii) the instruction letter from AMID LP set forth as Attachment A hereto (“Instruction Letter”)
to:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">[Transfer Agent]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify"> </P>
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<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-5</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">Attention: [________]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Upon [Transfer Agent’s]
processing of the instructions set forth in the Instruction Letter, you shall receive:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(iii)</TD><TD STYLE="text-align: justify">one certificate in the name of Costar Midstream Energy, LLC, representing [_________] Common Units;
and</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(iv)</TD><TD STYLE="text-align: justify">one certificate Costar Midstream Energy, LLC, representing [_________] Common Units.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">You are hereby directed to maintain such
certificates in escrow as Escrow Units pursuant to the terms of the Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">This letter of instruction
may be executed in two or more counterparts, each of which shall be an original, but all of which shall constitute one and the
same letter of instruction.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Please confirm the
instructions contained in this letter of instruction through the procedures set forth in Exhibit B-1 and Exhibit B-2 of the Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 31.5pt"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">*****</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"> </P>
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<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-5</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">By the signatures affixed below, the parties
agree to this letter of instruction and consent to its terms.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-variant: small-caps"> </FONT></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"><font style="font-variant: small-caps">Energy Spectrum Partners VI LP, </font>on behalf of itself and in its capacity as attorney-in-fact of <font style="font-variant: small-caps">Costar Midstream Energy, LLC</font></td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD STYLE="width: 50%"> </td>
<TD STYLE="width: 5%">By:</td>
<TD STYLE="width: 45%">Energy Spectrum Capital VI LP</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD> </td>
<TD>its general partner</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD>By:</td>
<TD>Energy Spectrum VI LLC</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD> </td>
<TD>its general partner</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD>By:</td>
<TD STYLE="border-bottom: Black 1pt solid"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2">Name:</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2">Title:</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"><font style="font-variant: small-caps">American Midstream, LLC</font></td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<TD>By:</td>
<TD STYLE="border-bottom: Black 1pt solid"> </td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2">Name:</td></tr>
<tr style="vertical-align: top">
<TD> </td>
<td colspan="2">Title:</td></tr>
</table>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"> </P>
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<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-5</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Attachment A</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Instruction Letter</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>[Letterhead of American Midstream Partners,
LP]</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Date]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Transfer Agent]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">RE:</TD><TD STYLE="text-align: justify">Letter of instruction</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: -0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Dear Ladies and Gentlemen:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Enclosed herewith are the following certificates:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(iii)</TD><TD STYLE="text-align: justify">certificate number [__] in the name of Costar Midstream Energy, LLC, representing [_________] common
units, representing limited partnership interests of American Midstream Partners, LP (“Common Units”); and</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(iv)</TD><TD STYLE="text-align: justify">certificate number [__] in the name of Energy Spectrum Partners VI LP, representing [_________]
Common Units.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">You are hereby directed to break up certificate
number [__] in the name of Costar Midstream Energy, LLC, representing [_________] Common Units, and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(iv)</TD><TD STYLE="text-align: justify">cancel and retire [_________] Common Units; and</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(v)</TD><TD STYLE="text-align: justify">issue, effective November 8, 2014, one physical certificate, in the name of Costar Midstream Energy,
LLC representing [_________] Common Units printed with Legends [A, B and C] on as set forth on Exhibit A attached hereto (such
certificate, the “New Costar Certificate”).</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">You are hereby further directed to break
up certificate number [__] in the name of Energy Spectrum Partners VI LP, representing [_________] Common Units, and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(iv)</TD><TD STYLE="text-align: justify">cancel and retire [_________] Common Units; and</TD></TR></TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in">(v)</TD><TD STYLE="text-align: justify">issue, effective November 8, 2014, one physical certificate, in the name of Energy Spectrum Partners
VI LP representing [_________] Common Units printed with Legends [A, B and C] on as set forth on Exhibit A attached hereto (such
certificate, the “New Energy Spectrum Certificate”).</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Each of the New Costar Certificate and
the New Energy Spectrum Certificate is to be mailed, via next day delivery service, to:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
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<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-5</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">Wells Fargo National Banking
Association</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">Attn: [______________]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">[Address]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify">[Phone Number]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">As Vice President, General Counsel and
Secretary of American Midstream Partners GP, LLC, general partner of American Midstream Partners, LP, I hereby approve the instructions
contained herein.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Sincerely,</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">William B. Mathews</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Secretary, General Counsel and Vice President</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">American Midstream GP, LLC, general partner of</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">American Midstream Partners, LP</P>
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<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-5</TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Exhibit A</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>Legends</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>[See Attached]</U></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
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<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">Exhibit D-5</TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
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<DOCUMENT>
<TYPE>EX-99.6
<SEQUENCE>5
<FILENAME>v391998_ex99-6.htm
<DESCRIPTION>EXHIBIT 99.6
<TEXT>
<HTML>
<HEAD>
<TITLE></TITLE>
</HEAD>
<BODY STYLE="font: 10pt Times New Roman, Times, Serif">
<P STYLE="margin: 0"> </P>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">Exhibit 99.6</P>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">SELLERS’ AGREEMENT</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">This Sellers’
Agreement (this “<B><I>Agreement</I></B>”) is entered into as of October 13, 2014 by and between Costar Midstream Energy,
LLC, a Texas limited liability company (the “<B><I>Management</I></B> <B><I>Member</I></B>”), and Energy Spectrum Partners
VI LP, a Delaware limited partnership (the “<B><I>ESP Member</I></B>”). The Management Member and the ESP Member are
sometimes referred to collectively herein as the “<B><I>Parties</I></B>” and individually as a “<B><I>Party</I></B>”.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Unless the context
otherwise requires, capitalized terms used but not defined in this Joinder Agreement have the same meanings assigned to them in
the Purchase and Sale Agreement (the “<B><I>Purchase Agreement</I></B>”), dated as of even date herewith, among the
Parties and American Midstream, LLC, a Delaware limited liability company (“<B><I>Buyer</I></B>”).</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><U>RECITALS</U>:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><I> </I></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><I>WHEREAS</I>, Management
Member and ESP Member are parties to that certain Amended and Restated Company Agreement (the “<B><I>Company Agreement</I></B>”)
of Costar Midstream, L.L.C. (the “<B><I>Company</I></B>”), dated December 16, 2011; and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">WHEREAS, the ESP Member
is the record holder of the Golden Share (as defined in the Second Amended and Restated Company Agreement of Management Member
dated as of December 16, 2011), as the transferee of the Company; and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><I> </I></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><I>WHEREAS</I>, the
Parties collectively own 100% of the issued and outstanding membership interests (the “<B><I>Interests</I></B>”) of
the Company; and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><I> </I></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><I>WHEREAS</I>, Buyer
has agreed to purchase the Interests from the Parties pursuant to the Purchase Agreement; and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><I> </I></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><I>WHEREAS</I>, the
Parties have agreed to allocate among themselves all consideration received from the Buyer with respect to their ownership of the
Interests in accordance with Section 7.5(a) of the Company Agreement as if such consideration was received in a transaction to
which such Section 7.5(a) applies; and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">WHEREAS, the Parties
have determined to appoint the ESP Member as Sellers’ Representative with the sole authority, to the exclusion of the Parties
themselves, to take all actions under or with respect to the Purchase Agreement and each of the agreements and instruments contemplated
thereunder, that the Parties would be entitled to take in its individual capacity as each of such Parties’ respective attorney-in-fact;
and</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><I> </I></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><I>WHEREAS</I>, the
Parties desire to enter into this Agreement to evidence certain understandings with respect to the consideration to be received
by the Parties from Buyer under the Purchase Agreement and with respect to ESP Member serving as representative of the Parties
for certain matters arising under the Purchase Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><I>NOW THEREFORE</I>,
the Parties agree as follows:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">1. </FONT><U>Appointment
of Sellers’ Representative</U>. The Parties hereby constitute and appoint the ESP Member as their representative (the “<B><I>Sellers’
Representative</I></B>”) and their agent, agent for service of process and true and lawful attorney in fact with full power
of substitution, and authority in each of their names and on behalf of each of them, in accordance with the terms of this Agreement:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: -0.5in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(a)</FONT></TD><TD STYLE="text-align: justify">To act in the name, place and stead of Parties with respect to all matters arising under the Purchase
Agreement and the Escrow Agreement, and all other documents (together with the Purchase Agreement and the Escrow Agreement, the
“<B><I>Transaction Documents</I></B>”) and the transactions contemplated therein (the “<B><I>Transactions</I></B>”).
All actions taken by the Sellers’ Representative hereunder shall be conclusive and binding on the Parties as if expressly
confirmed and ratified in writing by each of the Parties. Without limiting the generality of the foregoing, the Sellers’
Representative shall have full power and authority on behalf of all of the Parties to take any and all actions and make any decisions
required or permitted to be taken or made by either Party under the Transaction Documents, including the exercise of the power
to: (i) consummate the Transactions; (ii) interpret all of the terms and provisions of the Transactions Documents; (iii) execute,
deliver, acknowledge, certify and file (in the name of any or all Parties or otherwise) any and all documents and take or omit
to take any and all actions and make all decisions, including, but not limited to, providing instructions, negotiating, granting
releases (including global releases) of liability, and entering into compromises or settlements of, and resolving, disputes, that
the Sellers’ Representative may, in its sole discretion, determine to be necessary, desirable or appropriate in connection
with any matter arising under the Transaction Documents including those matters covered in Sections 2.5 2.7, 5.3, 5.4, 5.7, 5.8,
9.2, 9.3, 9.4, 9.5, 9.8, or 9.9 or under Articles VI (including with respect to warranty claims), and Article VIII, (including
with respect to indemnification claims) of the Purchase Agreement and Sections 1.2, 1.3, 1.4, 1.5, 3.1, 3.3, 4.1, 4.3, 4.6, 4.7,
and 4.10 of the Escrow Agreement and such comparable provisions in the other Transaction Documents; (iv) give and receive notices
and communications under the Transaction Documents; (v) authorize the payment of fees, expenses and distributions including, without
limitation, any fees, of Sellers’ Representative; (vi) to make decisions with respect to any claim for indemnification by
a Buyer Indemnitee and any claim with respect to the Escrow Property (as that term is defined in the Escrow Agreement), including
authorizing the release of any portion of the Escrow Property to a Buyer Indemnitee under Section 1.3 of the Escrow Agreement;
(vii) to receive and disburse to the Parties any funds or property received on behalf of the Parties under the Transaction Documents
or otherwise in accordance with this Agreement; (viii) execute amendments (and additional documents related thereto) to the Transaction
Documents on behalf of the Parties generally consistent with the Transactions contemplated hereby, the execution thereof shall
be conclusive evidence of such determination; (ix) designate (A) the accounts for payment of amounts to be paid to the Parties,
respectively, pursuant to the Purchase Agreement, (B) to designate the respective amounts of consideration to be distributed from
any escrows to the Parties from time to time for the purposes of <U>Sections 6</U>, <U>7</U>, and <U>8</U> below, and (C) the transferee
of any Common Units to be received by the Parties pursuant to the Purchase Agreement, Escrow Agreement, or other Transaction Documents;
(x) give and receive notices pursuant to Section 9.9 of the Purchase Agreement and Section 4.3 of the Escrow Agreement and such
comparable provisions in the other Transaction Documents; and (xi) make any tax filings required to be filed with any federal or
state tax authority as a result of this Agreement, the Transaction Documents, or the Transactions. ESP Member hereby accepts its
appointment as the Sellers’ Representative.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: -0.5in"> </P>
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<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(b)</FONT></TD><TD STYLE="text-align: justify">To designate a replacement Sellers’ Representative, and Parties, by virtue of their execution
and delivery of this Agreement, hereby consent to such replacement Sellers’ Representative. Any such successor shall become
the “Sellers’ Representative” for all purposes under this Agreement and the Transaction Documents. Any replacement
Sellers’ Representative will sign a joinder to this Agreement within five (5) business days of appointment. Should ESP Member
designate a replacement Sellers’ Representative they will notify Management Member within five (5) business days of the selection.
If for any reason there is no Sellers’ Representative at any time, all references herein to the Sellers’ Representative
shall be deemed to refer to the Parties.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: -0.5in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(c)</FONT></TD><TD STYLE="text-align: justify">To do all things and to perform all acts not explicitly referenced in <U>Sections 1(a)</U> and
<U>(1)(b)</U> of this Agreement, including executing and delivering all agreements, certificates, receipts, instructions and other
instruments contemplated by or deemed advisable to effectuate the provisions of this Agreement.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">2. </FONT><U>The
Sellers’ Representative as Sole Agent</U>. The Sellers shall refrain from taking any action or engaging in any negotiation
or transaction or giving any notice which the Sellers’ Representative shall have the authority to do or engage under <U>Section
1</U> above, it being the intent of the Parties that the Sellers’ Representative, on behalf of the Parties collectively and
individually, will be solely responsible for dealing with the Buyer and third parties, including any Escrow Agent, with whom the
Parties have a contractual relationship arising from the Purchase Agreement or the agreements contemplated therein. At the request
of the Sellers’ Representative, the Parties will execute and deliver such agreements, instruments and certificates as the
Sellers’ Representative shall reasonably request to give effect to the foregoing and <U>Section 1</U> above.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">3. </FONT><U>No
Remedies from Third Parties</U>. The Parties shall not seek a remedy from any third party, including but not limited to the Buyer
or the Escrow Agent, nor shall it name any such third party as a party in any proceeding seeking a relief or a remedy for a breach
or alleged breach by the Sellers’ Representative of any of its obligations hereunder or under the Company Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">4. </FONT><U>No
Amendment of the Company Agreement</U>. Notwithstanding the provisions of <U>Sections 1</U> and <U>2</U> above, the ESP Member
shall not have the authority to amend or modify the rights, duties or obligations of the Members under the Company Agreement without
in each case complying the provisions Section 14.3 of the Company Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">5. </FONT><U>Irrevocability
and Limitation on Liability of Sellers’ Representative</U>. The appointment and grant of power and authority of Sellers’
Representative herein and pursuant to the Power of Attorney is coupled with an interest and is in consideration of the mutual covenants
made herein, and is irrevocable and shall not be terminated by any act of either the Management Member or the ESP Member or by
operation of law, including the death or incapacity of any person or by the occurrence of any other event without the consent of
the Sellers’ Representative. No bond shall be required of the Sellers’ Representative, and the Sellers’ Representative
shall receive no compensation for its services. The Parties hereby consent to the taking of any and all actions and the making
of any decisions required or permitted to be taken or made by the Sellers’ Representative pursuant to this Agreement. Each
of the Parties agree that the Sellers’ Representative shall have no obligation or liability to any person for any action
or omission taken or omitted by the Sellers’ Representative in good faith hereunder, and each of the Parties shall indemnify
and hold the Sellers’ Representative harmless from and against any and all loss, damage, expense or liability (including
reasonable counsel fees and expenses) which the Sellers’ Representative may sustain as a result of any such action or omission
by the Sellers’ Representative hereunder.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">6. </FONT><U>Allocation
of Consideration</U>. The Parties agree that the consideration received from Buyer from time to time, and any amounts distributed
to the Parties as deferred consideration or from any escrows, shall be applied to the payment of distributions to the Parties in
the ratio that reflects the order of priority specified in Section 7.5(a) of the Company Agreement at such time as it is received
by the Parties from the Buyer or the Escrow Agent, as applicable. For purposes of making distributions under the Company Agreement,
the Parties agree that Common Units received in connection with the Purchase Agreement will be valued as follows:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: -0.5in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(a)</FONT></TD><TD STYLE="text-align: justify">All Common Units received by the Parties at the Closing will be valued at the Unit Price.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify; text-indent: -0.5in"> </P>
<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">(b)</FONT></TD><TD STYLE="text-align: justify">All Common Units received by the Parties after the Closing will be valued at the Market Price.</TD></TR></TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">7. </FONT><U>Ownership
of Escrowed Common Units</U>. During the period in which the Common Units are held by the Escrow Agent each Party will be deemed
to own the escrowed Common Units (and any dividends, earnings and other distributions thereon) in the ratio determined as if all
distributions were made pursuant to Section 7.5(a) of the Company Agreement (such ratios determined as if the Payout Percentages
set forth for each Party with respect to the Payout Threshold (as such terms are defined in the Company Agreement) are paid pursuant
to Section 7.5(a) of the Company Agreement) (the “<B><I>Closing Allocation Percentage</I></B>”) determined as of the
Closing and set forth on Schedule 7.3 to the Purchase Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">8. </FONT><U>Distribution
of Escrowed Common Units</U>. Common Units and any cash received by the Parties as a distribution from Escrow Property (as that
term is defined in that certain Escrow Agreement of even date by and among Management Member, ESP Member, Buyer, and Wells Fargo
Bank, National Association (the “<B><I>Escrow Agreement</I></B>”)) shall be distributed among the Parties in the percentages
that would be received by the Parties if an amount in cash were distributed at such time among the Parties in accordance with Section
7.5(a) of the Company Agreement, calculated for Payout Percentages and Payout Thresholds as of the date of distribution and without
taking in to consideration the deemed ownership of the Parties pursuant to <U>Section 7</U> of this Agreement; provided, however,
that if at such time as Common Units have been released to the Parties from Escrow (which shall not include those Common Units
retained in satisfaction of an indemnity claim pursuant to the terms of the Purchase Agreement), one Party is entitled to receive
a percentage of the distributed Common Units or cash that is less than its Closing Allocation Percentage, the Sellers’ Representative
shall (i) notify that Party (the “<B><I>True-up Party</I></B>”) and shall deliver a written notice (the “<B><I>True-up
Notice</I></B>”) to the other Party (the “<B><I>Surplus Party</I></B>”) setting forth the Implied Tax Amount,
and (ii) designate to the Escrow Agent that Common Units or cash, as the case may be, otherwise distributable to the Surplus Party
shall instead be distributed to the True-up Party until the True-up Party shall have received the number of Common Units or cash,
as the case may be, equal in value to the Implied Tax Amount. Notwithstanding the foregoing, in the calculation of amounts due
the Parties under Section 7.5(a) of the Company Agreement, an amount equal to the Implied Tax Amount (as subsequently defined)
borne by the Surplus Party with respect to distributions received with respect to Common Units held of record as of the Closing
but distributed to the True-up Party shall be deemed distributed to the True-up Party for the purposes of making the calculations
required by Section 7.5(a) of the Company Agreement. For purposes of this Agreement, (i) “<B><I>Implied Tax Amount</I></B>”
means a dollar amount equal to the product of (A) aggregate allocation of items of income and gain (net of any allocations of items
of loss and deduction) for federal income tax purposes with respect to each of the Non-Received Units for the period beginning
on the Closing Date and ending on the day such Units are released from escrow (if American Midstream is not able to provide the
amount to be allocated with respect to the Non-Received Units for the period beginning on January 1, 2015 and ending on the date
such Non-Received Units are distributed from escrow, an estimate shall be made by the Sellers’ Representative) and (B) .434
and (ii) “<B><I>Non-Received Units</I></B>” means, with respect to a Party, the difference between (A) the product
of (x) such Party’s Closing Allocation Percentage and (y) the total number of Common Units distributed to all Parties from
the Escrow Property, and (B) the number of Common Units actually received by a Party pursuant to the first sentence of this <U>Section
8</U>.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">9. </FONT><U>Term</U>.
This Agreement shall continue indefinitely; <I>provided</I> that if all of the Transaction Documents shall be terminated pursuant
to the terms thereof, this Agreement shall automatically terminate without the need for any further action by the Parties.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">10. </FONT><U>Amendments
and Waivers</U>. This Agreement may be amended, superseded or canceled only by a written instrument duly executed by the Parties.
Any of the terms of this Agreement and any condition to a Party’s obligations hereunder may be waived only in a writing signed
by that Party specifically stating that it waives a term or condition hereof. No waiver by either Party of any one or more conditions
or defaults by the other in performance of any of the provisions of this Agreement shall operate or be construed as a waiver of
any future conditions or defaults, whether of a like or different character, nor shall the waiver constitute a continuing waiver
unless otherwise expressly provided.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">11. </FONT><U>Severability</U>.
Each portion of this Agreement is intended to be severable. If any term or provision hereof is illegal or invalid for any reason
whatsoever, such illegality or invalidity shall not affect the validity of the remainder of this Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
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<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">12. </FONT><U>Counterparts;
Electronic Delivery</U>. This Agreement may be executed simultaneously in any number of counterparts, each of which shall be deemed
an original, but all of which together shall constitute one and the same instrument. Any counterpart signature page that is delivered
via facsimile, electronic mail or other electronic means shall have the same force and effect as an original counterpart signature
page.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">13. </FONT><U>Governing
Law and Jurisdiction</U>. This Agreement shall be governed by, enforced in accordance with, and interpreted under, the Laws of
the State of Texas, without reference to conflicts of Laws principles. ANY LEGAL SUIT, ACTION OR PROCEEDING ARISING OUT OF OR BASED
UPON THIS AGREEMENT MAY BE INSTITUTED IN THE FEDERAL COURTS OF THE UNITED STATES OF AMERICA OR THE COURTS OF THE STATE OF TEXAS
IN EACH CASE LOCATED IN THE CITY OF DALLAS AND COUNTY OF DALLAS, AND EACH PARTY IRREVOCABLY SUBMITS TO THE EXCLUSIVE JURISDICTION
OF SUCH COURTS IN ANY SUCH SUIT, ACTION OR PROCEEDING. SERVICE OF PROCESS, SUMMONS, NOTICE OR OTHER DOCUMENT BY MAIL TO SUCH PARTY’S
ADDRESS SET FORTH HEREIN SHALL BE EFFECTIVE SERVICE OF PROCESS FOR ANY SUIT, ACTION OR OTHER PROCEEDING BROUGHT IN ANY SUCH COURT.
THE PARTIES IRREVOCABLY AND UNCONDITIONALLY WAIVE ANY OBJECTION TO THE LAYING OF VENUE OF ANY SUIT, ACTION OR ANY PROCEEDING IN
SUCH COURTS AND IRREVOCABLY WAIVE AND AGREE NOT TO PLEAD OR CLAIM IN ANY SUCH COURT THAT ANY SUCH SUIT, ACTION OR PROCEEDING BROUGHT
IN ANY SUCH COURT HAS BEEN BROUGHT IN AN INCONVENIENT FORUM.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">14. </FONT><U>Notices
and Addresses</U>. Any notice, request, instruction, waiver or other communication to be given hereunder by either Party shall
be in writing and shall be considered duly delivered if personally delivered, mailed by certified mail with the postage prepaid
(return receipt requested) or sent by messenger or overnight delivery service to the addresses of the Parties as follows:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">ESP Member:<BR>
<BR>
Energy Spectrum Partners VI LP<BR>
5956 Sherry Lane, Suite 900<BR>
Dallas, TX 75225<BR>
Attention: James P. Benson</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left; text-indent: 0in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: left; text-indent: 0">Management Member:</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">Costar Midstream Energy, LLC</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">8150 North Central Expressway</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">Suite 635</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in">Dallas, TX 75206<BR>
Attn: Kevin Sullivan</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
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<DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">or at such other address as either Party may designate by written
notice to the other Party in the manner provided in this <U>Section 14</U>. Notice by mail shall be deemed to have been given and
received on the third (3<SUP>rd</SUP>) day after posting. Notice by messenger, overnight delivery service or personal delivery
shall be deemed given on the date of actual delivery if such date is a Business Day and, if not, on the first Business Day following
such date.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">15. </FONT><U>No
Partnership; Third Party Beneficiaries</U>. Nothing in this Agreement shall be deemed to create a joint venture, partnership, or
agency relationship between the Parties for state law purposes or a partnership for federal tax purposes. Nothing in this Agreement
shall provide any benefit to any third party or entitle any third party to any claim, cause of action, remedy or right of any kind,
it being the intent of the Parties that this Agreement shall not be construed as a third-party beneficiary contract.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">16. </FONT><U>Waiver
of Transfer Restrictions and Right of First Offer</U>. Both Sellers hereby waive all right of first offer, transfer restrictions,
and other provisions restricting the transfer or binding the Interest in the Company, including, but not limited to, those provisions
contained in Article XI of the Company Agreement.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">17. </FONT><U>Power
of Attorney</U>. In order to effectuate the powers of ESP Member to act as Sellers’ Representative pursuant to this Agreement,
Management Member will sign an irrevocable Power of Attorney in the form attached hereto as <U>Exhibit A</U> (the “<B><I>Power
of Attorney</I></B>”).</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">18. </FONT><U>Representation</U>.
The Parties and the Sellers’ Representative expressly and knowingly consent to Jackson Walker L.L.P. representing ESP Member,
in its individual capacity and in its capacity as Sellers’ Representative, from and after the Closing in any matter that
is or may be adverse to Management Member or any other party to the Transaction Documents, in connection with the Transactions
contemplated by or otherwise arising under this Agreement, the Purchase Agreement, the Escrow Agreement, or the other Transaction
Documents. This consent constitutes an advance waiver of any conflict of interest claim against Jackson Walker L.L.P. as a result
of such firm representing ESP Member as described in the preceding sentence. <B>In addition, each of Parties, expressly and knowingly,
effective as of the Closing: (i) acknowledge and agree that all communications between Jackson Walker L.L.P. and the Company or
its agents or representatives in connection with the Transactions contemplated by or otherwise arising under this Agreement, the
Purchase Agreement, the Escrow Agreement, or the other Transaction Documents are subject to the sole and absolute control of ESP
Member, (ii) waives any and all rights to obtain or otherwise control the disclosure of such communications, and (iii) Management
Member covenants and agrees not to assert any rights whatsoever with respect to any such communications.</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">19. </FONT><U>Payments
to Prospect</U>. In connection with the consummation of the transactions contemplated in the Purchase Agreement, the Parties will
assume certain obligations to third parties, including, but not limited to, the obligations under Section 2.6 of that certain the
Purchase and Sale Agreement dated January 4, 2012 by and among Gas Solutions GP LLC, Gas Solutions LP, LLC, Costar Midstream, L.L.C.,
Costar GS GP, LLC, and Costar GS LP, LLC. The Parties intend to utilize the proceeds received and to be received as a result of
the Transactions contemplated in the Purchase Agreement and the other Transaction Documents to satisfy those obligations, and in
that regard agree that the powers granted in <U>Sections 1</U>, <U>6</U> and <U>8</U> shall include the authority to utilize such
proceeds, including any proceeds to be received in the future, as the Sellers’ Representative deems appropriate in connection
with satisfying the obligations of the Sellers under the Purchase Agreement and the other Transaction Documents.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
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<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><FONT STYLE="font-family: Times New Roman, Times, Serif">20. </FONT><U>Reimbursement
of Payments</U>. Each Party agrees that, if (i)(A) an indemnification claim is required to be paid by the Parties (unless such
claim is to be paid out of the Escrow Property in which case it will be handled under <U>Section 8</U>) under the Purchase Agreement
or the other Transaction Documents, (B) either or both Parties is required to pay any money to the Buyer or a third party with
respect to, or as a result of, the Transactions, (C) there is an adjustment to the purchase price payable to the Parties under
the Purchase Agreement and the other Transaction Documents, (D) the Sellers’ Representative is entitled to indemnification
under this Agreement, or (E) either Party pays on behalf of the Parties expenses or sales commissions relating to or arising out
of the sale of the Common Units on behalf of the Parties (each a “<B><I>Party Liability</I></B>” and collectively “<B><I>Party
Liabilities</I></B>”), and (ii) the actual amount expended by each Party with respect to such Party Liability does not match
the reduction in consideration that each Party would have received if the Party Liability had reduced the final amount in cash
and fair market value property distributed among the Parties in accordance with Section 7.5(a) of the Company Agreement (the “<B><I>Applicable
Sharing Percentage</I></B>”), then the Party who paid less than such Party’s Applicable Sharing Percentage (the “<B><I>Underpaying
Party</I></B>”) agrees to indemnify the Party that paid more than its Applicable Sharing Percentage (the “<B><I>Overpaying
Party</I></B>”) with respect to the relevant Party Liability (such indemnification, a “<B><I>Reimbursement</I></B>”);
provided that in the event of any offering of the Common Units, the Parties shall share expenses and sales commissions not in accordance
with their Applicable Sharing Percentages, but in proportion to the number of Common Units sold on their respective behalf. Each
Reimbursement shall be equal to the difference of (i) the product of (A) the Underpaying Party’s Applicable Sharing Percentage,
multiplied by (B) the total amount of Party Liabilities arising from the date of this Agreement, minus (ii) the sum of (A) the
aggregate amount expended by the Underpaying Party with respect to all Party Liabilities arising from the date of this Agreement,
plus (B) the aggregate amount of Reimbursements made by the Underpaying Party from the date of this Agreement. The Sellers’
Representative shall have full authority in accordance with <U>Section 6</U> of this Agreement to determine each Party’s
Applicable Sharing Percentage with respect to each Party Liability and determine the amount of the Reimbursement required to be
paid by the Underpaying Party to the Overpaying Party with respect to any Party Liability. The Sellers’ Representative shall
also have full authority to determine the timing of the payment of any Reimbursements.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">[<I>Signature Page Follows</I>]</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
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<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><I>IN WITNESS WHEREOF</I>,
the Parties have executed this Agreement on the day and year first above stated.</P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"></P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 45%; font-size: 10pt"> </TD>
<TD STYLE="width: 55%; font-size: 10pt"><FONT STYLE="font: 10pt Times New Roman, Times, Serif"><B>COSTAR MIDSTREAM ENERGY, LLC</B></FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 45%"> </TD>
<TD STYLE="width: 9%"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">By:</FONT></TD>
<TD STYLE="width: 46%; border-bottom: Black 1pt solid">/s/ Kevin Sullivan</TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD><FONT STYLE="font: 10pt Times New Roman, Times, Serif">Name:</FONT></TD>
<TD STYLE="border-bottom: Black 1pt solid">Kevin Sullivan</TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD><FONT STYLE="font: 10pt Times New Roman, Times, Serif">Title:</FONT></TD>
<TD STYLE="border-bottom: Black 1pt solid">Manager</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 45%"> </TD>
<TD STYLE="width: 55%"><FONT STYLE="font: 10pt Times New Roman, Times, Serif"><B>ENERGY SPECTRUM PARTNERS VI LP, in its own capacity and as Sellers’ Representative</B></FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD> </TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD><FONT STYLE="font: 10pt Times New Roman, Times, Serif"><B>By: Energy Spectrum Capital VI LP, its general partner</B></FONT></TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD> </TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD><FONT STYLE="font: 10pt Times New Roman, Times, Serif"><B>By: Energy Spectrum VI LLC, its general partner</B></FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
<TD STYLE="width: 45%"> </TD>
<TD STYLE="width: 9%"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">By:</FONT></TD>
<TD STYLE="width: 46%; border-bottom: Black 1pt solid">/s/ James P. Benson</TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD><FONT STYLE="font: 10pt Times New Roman, Times, Serif">Name:</FONT></TD>
<TD STYLE="border-bottom: Black 1pt solid">James P. Benson</TD></TR>
<TR STYLE="vertical-align: top">
<TD> </TD>
<TD><FONT STYLE="font: 10pt Times New Roman, Times, Serif">Title:</FONT></TD>
<TD STYLE="border-bottom: Black 1pt solid">Managing Director</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"> </P>
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<DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%"> </TD></TR></TABLE></DIV>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B><U>EXHIBIT A</U></B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>POWER OF ATTORNEY</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B> </B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(See Attached)</B></P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"> </P>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>
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end
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>