ENVIRONMENTAL LAW-NEPA-SECTION 102 OF NATIONAL ENVIRONMENTAL POLICY ACT OF 1969 IMPOSES ON FEDERAL AGENCIES A JUDICIALLY ENFORCEABLE DUTY TO CONSIDER AT EVERY DISTINCTIVE AND COMPREHENSIVE STAGE OF AN AGENCY REVIEW PROCESS ALL ENVIRONMENTAL VALUES EXCEPT THOSE EXPRESSLY WITHIN EXCLUSIVE JURISDICTION OF ANOTHER AGENCY-CLIFFS,C COORDINATING COMMITTEE, INC V AEC, 449 F2D 1109 (DC CIR 1971)