9999999995-15-003349.txt : 20151222 9999999995-15-003349.hdr.sgml : 20151222 20151222001515 ACCESSION NUMBER: 9999999995-15-003349 CONFORMED SUBMISSION TYPE: EFFECT PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20151221 DATE AS OF CHANGE: 20151222 EFFECTIVENESS DATE: 20151221 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Mountaineer Pipeline Company, L.L.C. CENTRAL INDEX KEY: 0001533090 IRS NUMBER: 453160452 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-04 FILM NUMBER: 151300730 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER I, STE. 1600 CITY: DENVER STATE: CO ZIP: 80202-2137 BUSINESS PHONE: (303) 925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER I, STE. 1600 CITY: DENVER STATE: CO ZIP: 80202-2137 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest New Mexico LLC CENTRAL INDEX KEY: 0001292419 IRS NUMBER: 300157474 STATE OF INCORPORATION: TX FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-11 FILM NUMBER: 151300738 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FORMER COMPANY: FORMER CONFORMED NAME: MarkWest New Mexico LP DATE OF NAME CHANGE: 20040602 FILER: COMPANY DATA: COMPANY CONFORMED NAME: West Shore Processing CO LLC CENTRAL INDEX KEY: 0001292408 IRS NUMBER: 760501616 STATE OF INCORPORATION: MI FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-16 FILM NUMBER: 151300743 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Markwest Javelina Pipeline CO LLC CENTRAL INDEX KEY: 0001349174 IRS NUMBER: 382909338 STATE OF INCORPORATION: TX FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-23 FILM NUMBER: 151300750 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9278 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FORMER COMPANY: FORMER CONFORMED NAME: Markwest Javelina Pipeline CO DATE OF NAME CHANGE: 20060109 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Pipeline CO LLC CENTRAL INDEX KEY: 0001315242 IRS NUMBER: 000000000 STATE OF INCORPORATION: TX FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-28 FILM NUMBER: 151300755 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FORMER COMPANY: FORMER CONFORMED NAME: MarkWest Pipeline CO LP DATE OF NAME CHANGE: 20050124 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Gas Marketing, L.L.C. CENTRAL INDEX KEY: 0001457473 IRS NUMBER: 262827902 STATE OF INCORPORATION: TX FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-07 FILM NUMBER: 151300733 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Mason Pipeline LTD Liability CO CENTRAL INDEX KEY: 0001435921 IRS NUMBER: 000000000 STATE OF INCORPORATION: MI FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-14 FILM NUMBER: 151300741 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER II, SUITE 700 CITY: HOUSTON STATE: TX ZIP: 80202 BUSINESS PHONE: 3039259200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER II, SUITE 700 CITY: HOUSTON STATE: TX ZIP: 80202 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Energy GP, L.L.C. CENTRAL INDEX KEY: 0001412304 IRS NUMBER: 010636219 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-19 FILM NUMBER: 151300746 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Energy East Texas Gas CO LLC CENTRAL INDEX KEY: 0001315262 IRS NUMBER: 201311706 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-27 FILM NUMBER: 151300754 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FORMER COMPANY: FORMER CONFORMED NAME: MarkWest Energy East Texas Gas CO LP DATE OF NAME CHANGE: 20050124 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Power Tex LLC CENTRAL INDEX KEY: 0001292414 IRS NUMBER: 450537840 STATE OF INCORPORATION: TX FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-29 FILM NUMBER: 151300757 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FORMER COMPANY: FORMER CONFORMED NAME: MarkWest Power Tex LP DATE OF NAME CHANGE: 20040602 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Texas PNG Utility LLC CENTRAL INDEX KEY: 0001292417 IRS NUMBER: 300157468 STATE OF INCORPORATION: TX FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-31 FILM NUMBER: 151300760 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FORMER COMPANY: FORMER CONFORMED NAME: MarkWest Texas PNG Utility LP DATE OF NAME CHANGE: 20040602 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Buffalo Creek Gas Company, L.L.C. CENTRAL INDEX KEY: 0001625169 IRS NUMBER: 320408108 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-02 FILM NUMBER: 151300728 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 1 STREET 2: SUITE 1600 CITY: DENVER STATE: CO ZIP: 80202 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 1 STREET 2: SUITE 1600 CITY: DENVER STATE: CO ZIP: 80202 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Gas Services, L.L.C. CENTRAL INDEX KEY: 0001435923 IRS NUMBER: 261795927 STATE OF INCORPORATION: TX FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-20 FILM NUMBER: 151300747 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER II, SUITE 700 CITY: HOUSTON STATE: TX ZIP: 80202 BUSINESS PHONE: 3039259200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER II, SUITE 700 CITY: HOUSTON STATE: TX ZIP: 80202 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest PNG Utility LLC CENTRAL INDEX KEY: 0001292416 IRS NUMBER: 300157467 STATE OF INCORPORATION: TX FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-32 FILM NUMBER: 151300761 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202 FORMER COMPANY: FORMER CONFORMED NAME: MarkWest PNG Utility LP DATE OF NAME CHANGE: 20040602 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Utica Operating Company, L.L.C. CENTRAL INDEX KEY: 0001555528 IRS NUMBER: 800773356 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-03 FILM NUMBER: 151300729 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 1 STREET 2: SUITE 1600 CITY: DENVER STATE: CO ZIP: 80202 BUSINESS PHONE: (303) 925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 1 STREET 2: SUITE 1600 CITY: DENVER STATE: CO ZIP: 80202 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Marketing, L.L.C. CENTRAL INDEX KEY: 0001435922 IRS NUMBER: 262430225 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-08 FILM NUMBER: 151300734 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER II, SUITE 700 CITY: HOUSTON STATE: TX ZIP: 80202 BUSINESS PHONE: 3039259200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER II, SUITE 700 CITY: HOUSTON STATE: TX ZIP: 80202 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Energy Operating CO LLC CENTRAL INDEX KEY: 0001292406 IRS NUMBER: 270005448 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-17 FILM NUMBER: 151300744 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Energy West Texas Gas Company, L.L.C. CENTRAL INDEX KEY: 0001643186 IRS NUMBER: 352530047 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-25 FILM NUMBER: 151300752 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 1, SUITE 1600 CITY: DENVER STATE: CO ZIP: 80202 BUSINESS PHONE: (303) 925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 1, SUITE 1600 CITY: DENVER STATE: CO ZIP: 80202 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Ranger Pipeline Company, L.L.C. CENTRAL INDEX KEY: 0001512400 IRS NUMBER: 274613260 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-05 FILM NUMBER: 151300731 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 1, SUITE 1600 CITY: DENVER STATE: CO ZIP: 80202-2137 BUSINESS PHONE: (303) 925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 1, SUITE 1600 CITY: DENVER STATE: CO ZIP: 80202-2137 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Texas LPG Pipeline, L.L.C. CENTRAL INDEX KEY: 0001565135 IRS NUMBER: 900906688 STATE OF INCORPORATION: TX FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-01 FILM NUMBER: 151300727 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 1, SUITE 1600 CITY: DENVER STATE: CO ZIP: 80202 BUSINESS PHONE: (303) 925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 1, SUITE 1600 CITY: DENVER STATE: CO ZIP: 80202 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Energy Finance CORP CENTRAL INDEX KEY: 0001315263 STANDARD INDUSTRIAL CLASSIFICATION: CRUDE PETROLEUM & NATURAL GAS [1311] IRS NUMBER: 201805917 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-18 FILM NUMBER: 151300745 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Pinnacle LLC CENTRAL INDEX KEY: 0001292415 IRS NUMBER: 300157461 STATE OF INCORPORATION: TX FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-10 FILM NUMBER: 151300737 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FORMER COMPANY: FORMER CONFORMED NAME: MarkWest Pinnacle LP DATE OF NAME CHANGE: 20040602 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Javelina CO LLC CENTRAL INDEX KEY: 0001349175 IRS NUMBER: 760263770 STATE OF INCORPORATION: TX FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-24 FILM NUMBER: 151300751 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FORMER COMPANY: FORMER CONFORMED NAME: MarkWest Javelina CO DATE OF NAME CHANGE: 20060109 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Energy South Texas Gas Company, L.L.C. CENTRAL INDEX KEY: 0001625171 IRS NUMBER: 800901416 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-26 FILM NUMBER: 151300753 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 1 STREET 2: SUITE 1600 CITY: DENVER STATE: CO ZIP: 80202 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 1 STREET 2: SUITE 1600 CITY: DENVER STATE: CO ZIP: 80202 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest McAlester, L.L.C. CENTRAL INDEX KEY: 0001457474 IRS NUMBER: 263195589 STATE OF INCORPORATION: OK FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-06 FILM NUMBER: 151300732 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Blackhawk LLC CENTRAL INDEX KEY: 0001292418 IRS NUMBER: 300157471 STATE OF INCORPORATION: TX FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-30 FILM NUMBER: 151300759 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FORMER COMPANY: FORMER CONFORMED NAME: MarkWest Blackhawk LP DATE OF NAME CHANGE: 20040602 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Energy Appalachia LLC CENTRAL INDEX KEY: 0001292409 IRS NUMBER: 470852385 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-15 FILM NUMBER: 151300742 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MARKWEST HYDROCARBON INC CENTRAL INDEX KEY: 0001019756 STANDARD INDUSTRIAL CLASSIFICATION: CRUDE PETROLEUM & NATURAL GAS [1311] IRS NUMBER: 841352233 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-09 FILM NUMBER: 151300735 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Oklahoma Gas CO LLC CENTRAL INDEX KEY: 0001292413 IRS NUMBER: 861089780 STATE OF INCORPORATION: OK FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-12 FILM NUMBER: 151300739 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202-2126 FORMER COMPANY: FORMER CONFORMED NAME: MarkWest Western Oklahoma Gas CO LLC DATE OF NAME CHANGE: 20040602 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Matrex, L.L.C. CENTRAL INDEX KEY: 0001435926 IRS NUMBER: 841349848 STATE OF INCORPORATION: MI FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-22 FILM NUMBER: 151300749 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER II, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202 BUSINESS PHONE: 3039259200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER II, SUITE 700 CITY: DENVER STATE: CO ZIP: 80202 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Michigan Pipeline CO LLC CENTRAL INDEX KEY: 0001292411 IRS NUMBER: 830375568 STATE OF INCORPORATION: MI FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-13 FILM NUMBER: 151300740 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 70 CITY: DENVER STATE: CO ZIP: 80202-2126 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET, TOWER 2, SUITE 70 CITY: DENVER STATE: CO ZIP: 80202-2126 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MarkWest Liberty Gas Gathering, L.L.C. CENTRAL INDEX KEY: 0001435924 IRS NUMBER: 262368254 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234-21 FILM NUMBER: 151300748 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER II, SUITE 700 CITY: HOUSTON STATE: TX ZIP: 80202 BUSINESS PHONE: 3039259200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER II, SUITE 700 CITY: HOUSTON STATE: TX ZIP: 80202 FILER: COMPANY DATA: COMPANY CONFORMED NAME: MARKWEST ENERGY PARTNERS L P CENTRAL INDEX KEY: 0001166036 STANDARD INDUSTRIAL CLASSIFICATION: CRUDE PETROLEUM & NATURAL GAS [1311] IRS NUMBER: 270005456 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-206234 FILM NUMBER: 151300726 BUSINESS ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 1, SUITE 1600 CITY: DENVER STATE: CO ZIP: 80202 BUSINESS PHONE: 303-925-9200 MAIL ADDRESS: STREET 1: 1515 ARAPAHOE STREET STREET 2: TOWER 1, SUITE 1600 CITY: DENVER STATE: CO ZIP: 80202 EFFECT 1 primary_doc.xml X0101 EFFECT 33 LIVE 2015-12-21 0001104659-15-083619 POS AM 0001166036 MARKWEST ENERGY PARTNERS L P 333-206234 0001292416 MarkWest PNG Utility LLC 333-206234-32 0001292417 MarkWest Texas PNG Utility LLC 333-206234-31 0001292418 MarkWest Blackhawk LLC 333-206234-30 0001292414 MarkWest Power Tex LLC 333-206234-29 0001315242 MarkWest Pipeline CO LLC 333-206234-28 0001315262 MarkWest Energy East Texas Gas CO LLC 333-206234-27 0001625171 MarkWest Energy South Texas Gas Company, L.L.C. 333-206234-26 0001643186 MarkWest Energy West Texas Gas Company, L.L.C. 333-206234-25 0001349175 MarkWest Javelina CO LLC 333-206234-24 0001349174 Markwest Javelina Pipeline CO LLC 333-206234-23 0001435926 Matrex, L.L.C. 333-206234-22 0001435924 MarkWest Liberty Gas Gathering, L.L.C. 333-206234-21 0001435923 MarkWest Gas Services, L.L.C. 333-206234-20 0001412304 MarkWest Energy GP, L.L.C. 333-206234-19 0001315263 MarkWest Energy Finance CORP 333-206234-18 0001292406 MarkWest Energy Operating CO LLC 333-206234-17 0001292408 West Shore Processing CO LLC 333-206234-16 0001292409 MarkWest Energy Appalachia LLC 333-206234-15 0001435921 Mason Pipeline LTD Liability CO 333-206234-14 0001292411 MarkWest Michigan Pipeline CO LLC 333-206234-13 0001292413 MarkWest Oklahoma Gas CO LLC 333-206234-12 0001292419 MarkWest New Mexico LLC 333-206234-11 0001292415 MarkWest Pinnacle LLC 333-206234-10 0001019756 MARKWEST HYDROCARBON INC 333-206234-09 0001435922 MarkWest Marketing, L.L.C. 333-206234-08 0001457473 MarkWest Gas Marketing, L.L.C. 333-206234-07 0001457474 MarkWest McAlester, L.L.C. 333-206234-06 0001512400 MarkWest Ranger Pipeline Company, L.L.C. 333-206234-05 0001533090 MarkWest Mountaineer Pipeline Company, L.L.C. 333-206234-04 0001555528 MarkWest Utica Operating Company, L.L.C. 333-206234-03 0001625169 MarkWest Buffalo Creek Gas Company, L.L.C. 333-206234-02 0001565135 MarkWest Texas LPG Pipeline, L.L.C. 333-206234-01