8-K

                     U.S. SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                    FORM 8-K
                                ---------------

                                 CURRENT REPORT
     Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934


        Date of Report (Date of Earliest Event Reported): April 13, 2004

                  ENVIRONMENTAL REMEDIATION HOLDING CORPORATION
               (Exact Name of Registrant as Specified in Charter)

                                    Colorado
                         (State or Other Jurisdiction of
                         Incorporation or Organization)

            000-17325                                       88-0218499
     (Commission File Number)               (I.R.S. Employer Identification No.)

             5444 Westheimer Road, Suite 1570, Houston, Texas 77056
           (Address of principal executive offices including zip code)

                                 (713) 626-4700
              (Registrant's telephone number, including area code)

ITEM 5. OTHER EVENTS

On April 13, 2004 Environmental Remediation Holding Corporation ("ERHC")
submitted a letter to the Nigeria-Sao Tome and Principe Joint Development
Authority exercising its preferential rights in the Nigeria-Sao Tome and
Principe Joint Development Zone. A copy of the letter is attached hereto as
Exhibit 99.1 and is incorporated herein in its entirety by reference into this
Item 5. The letter included Exercise Notice attachments which set forth ERHC's
specific choices in each block. A listing of the specific choices noted in each
Exercise Notice and the status of any Signature Bonus payable in each block is
attached hereto as Exhibit 99.2 and is incorporated herein in its entirety by
reference into this Item 5. The information furnished in this Item 5 shall not
be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of
1934, as amended, or otherwise subject to the liabilities of that section, nor
shall such information be deemed incorporated by reference in any filing under
the Securities Act of 1933, as amended, except as shall be expressly set forth
by specific reference in such a filing.


ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS

         (a) Financial Statements of Business Acquired. Inapplicable.

         (b) Pro Forma Financial Information. Inapplicable.

         (c) Exhibits

         Exhibit Number    Exhibit Description
         --------------    --------------------

         Exhibit 99.1      Letter Dated 13 April 2004 to Nigeria-Sao Tome and
                           Principe Joint Development Authority


         Exhibit 99.2      Summary of Exercise Notices attached to Letter Dated
                           13 April 2004



ITEM 9. REGULATION FD DISCLOSURE

  See Exhibits 99.1 and 99.2
- --------------------------------------------------------------------------------





                                   SIGNATURES

        Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                             ENVIRONMENTAL REMEDIATION HOLDING
                             CORPORATION

                             By: /s/   CHUDE MBA
                                 ---------------------
                                 Chude Mba, President

DATE: April 13, 2004
- --------------------------------------------------------------------------------

EX-99.1

Letter Dated 13 April 2004 to Nigeria-Sao Tome and Principe Joint Development
Authority

Dr. Tajudeen Umar                                                  13 April 2004
Chairman of the Board
Nigeria - Sao Tome and Principe Joint Development Authority
Abuja, Nigeria


Dear Dr. Umar

Exercise of preferential rights in the Nigeria-Sao Tome and Principe Joint
Development Zone

Thank you for your letter of 29 March 2004 inviting ERHC to exercise its
preferential rights in respect of blocks in the JDZ ("the Letter").

ERHC hereby exercises its preferential rights set out in the Administration
Agreement between ERHC and the Joint Development Authority ("JDA") dated 7 April
2003 ("the Agreement"), and attaches herewith an Exercise Notice for each
relevant block in accordance with the Agreement. This exercise of ERHC's rights
is subject to the following in respect of each Exercise Notice:

1.   if no license is awarded or a license is awarded and subsequently withdrawn
     by the JDA prior to the commencement of operations, for any reason (for
     example, a failure by the licencee(s) to meet the signature bonus
     conditions), ERHC will be entitled (at ERHC's option) to either:

     (a)  receive its nominated percentage working interest ("PWI") in that
          block in any future licensing of that block; or

     (b)  nominate and receive the same PWI in another block of ERHC's choice in
          the JDZ in any future licensing round;

2.   if the finally agreed PSC and commercial terms are materially less
     beneficial to ERHC than those that have been provided to ERHC to date, ERHC
     will be entitled to relinquish its right to its PWI in that block in return
     for nominating and receiving the same PWI in another block of ERHC's choice
     in the JDZ in any future licensing round.

ERHC has exercised its rights subject to the foregoing two conditions because
the JDA in the Letter requested ERHC to exercise its options now, before the
time and without much of the required information set out in the Agreement; a
departure from agreed procedures. For example, under the Agreement, the JDA was
to provide ERHC with the names of all the parties to each PSC, and the finally
agreed PSC and commercial terms, before ERHC exercised its options.

In exercising its options now, ERHC was mindful of the desire of the State
parties to conclude the licensing round as quickly as possible and was therefore
keen to assist the JDA in ensuring that the awarding of licences and
commencement of operations proceed speedily. ERHC however emphasises that, in
accordance with clause 4.2 of the Agreement, neither the percentage nor the
value of any working interest which ERHC has elected to receive will be
diminished or reduced in any way (including through any arrangement the JDA may
have or may subsequently conclude with any other party).


Yours sincerely
s/s CHUDE MBA
Chude Mba
President and Chief Executive Officer

EX-99.2

Summary of Exercise Notices attached to Letter Dated 13 April 2004

Attached to Letter Dated 13 April 2004 to Nigeria-Sao Tome and Principe Joint
Development Authority were six (6) "Exercise Notices" as required by the
Administration Agreement dated April 7, 2003 and filed as Exhibit 10.2 in the
Company's 8K filing of April 16, 2003. The Option Agreement dated April 2, 2003,
by and between Environmental Remediation Holding Corporation and the Democratic
Republic of Sao Tome and Principe and filed as Exhibit 10.1 in the Company's 8K
filing of April 16, 2003 set forth the status of any Signature Bonus that may be
payable by the Company

The following is the relevant information contained in each Exercise Notice and
the respective status of Signature Bonus for each block.

Choice             Working Interest Chosen           Status of Signature Bonus
- ------             -----------------------           Payable by the Company
                                                     -------------------------

Choice 1 Interest 15% working interest in Block 6    Signature Bonus Free

Choice 2 Interest 15% working interest in Block 5    Signature Bonus Payable

Choice 3 Interest 20% working interest in Block 3    Signature Bonus Free

Choice 4 Interest 30% working interest in Block 2    Signature Bonus Free

Choice 5 Interest 25% working interest in Block 4    Signature Bonus Free

Choice 6 Interest 20% working interest in Block 9    Signature Bonus Payable