First Amendment to Operating Agreement of Operating Agreement of Atlantic CNRG Services, L.L.C. Dated April, 1996 CONFIDENTIAL TREATMENT REQUESTED

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                                 Enerval, L.L.C.

                                      17.4

                          First Amendment to Operating
                        Agreement of Operating Agreement
                        of Atlantic CNRG Services, L.L.C.
                                Dated April, 1996





                        CONFIDENTIAL TREATMENT REQUESTED