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-, . ., Memo rand lIIi To: From: Subject: -- ~ Unite1States Department of t! Interior i' ( .. r ' JUL '5 1988 ornCE OF THE SECRETAllY WASHINGTON, D.C. 20240 - JUDe 16, 1988 c.. _ Director, Fish and Wildlife Service Director, National Park Service Commissioner. Bureau of Reclamation Assistant Secretary - Water anJ 'jciJnc Assistant Secretary - Fish and~li 61en Canyon Environmental Studies ~JUK 1 5 1988 n~? We have completed our review of the Executive Review Committee report on the 61en Canyon Enviromaental Studies (6CES). We agree with the Executive Review CoIaittee that several arellS of concern require further study and additional analysis before any action can be considered by the Department. These arellS are: (1) the effects of both low and fluctuating flows on enaarigered'f1s1i -species. the .trout fishery and beach aggradation and--'.: degradation. and (2) detailed economic analysis of operational options. With these concerns in mind. we accept your recoamendations to do further study of the foregoing issues. and direct you to develop a coordinated study plan that addresses theD. The study plan must be technically and scientifically ad~uat! to iddj~S3 ~~ al6a~ of ec~c~~. lbe develop~nt of the study plan should include input fral and give fair and appropriate recognition to the concerns of: a. Associated bureaus and agencies of the &CES program b. All constituent groups c. National AcadeII.Y of Sciences The study plan also should address as many recommendations by the National AcadeII.Y of Sciences as feasible in view of the ti~ available for additional study effort. The studies will require continued coordination among the bureaus and agencies of the 6eES program. The technical components of the program should be determined through a coordinated development and review process. The overall program should be outlined and reviewed by the 6CES/Executive Review Committee. If conflicts in coordination arise, our offices will be available to help facilitate a resolution. You are directed to continue to provide the staff support necessary to accomplish the objectives of the 6CES program. This support will include coordination of all aspects of the program. The GCES program has been funded to date through CRSP power revenues under the operation and maintenance program. This same fOnD of funding will be followed for the completion of the additional tasks identified. ".-"