ON MOTION TO NARROW ISSUES
Defendants have moved to narrow the issues in this case on the eve of trial. Specifically, they have requested the Court to decline review of all aspects of the “cost/benefit” analysis performed by the defendant United States Army Corps of Engineers pursuant to the Water Resources Policy Act of 1965, 42 U.S.C. § 1962 et seq. and the Corps’ planning regulations, 33 C.F.R. pts. 290-295 (1978). Because the Court is persuaded that defendants’ motion has a limited veracity, it grants the motion in part and dismisses counts I, II, IV, V, VI, VII and IX of plaintiffs’ Amended Complaint (filed December 11, 1978). The Court’s ruling, however, does not eliminate the issue of the propriety of defendants’ cost/benefit analysis. By declining to dismiss count VIII, the Court holds that this analysis is subject to judicial review to determine its adequacy under the National Environmental Policy Act, § 101(b), 42 U.S.C. § 4331(b).
Generally, this Court’s prior decisions have been limited to an examination of the adequacy of plaintiffs’ claims under the National Environmental Policy Act. The Court has never discussed either the prima facie viability of the claims made under other statutes and regulations or the impact upon those claims of congressional authorization of Lock and Dam 26. A treatment of these issues is, of course, imperative before trial and the Court now turns its attention to that matter. The background of this litigation is fully set forth in the Court’s three prior published opinions, 382 F.Supp. 610 (D.D.C. 1974) (granting a preliminary injunction and requiring congressional approval), 431 F.Supp. 772 (D.D.C. 1977) (dissolving the preliminary injunction without prejudice and upholding plaintiffs’ right to seek review of the environmental impact statement), 459 F.Supp. 188 (D.D.C. 1978) (denying motions for summary judgment), and thus, need not be repeated here. One new fact, however, should be noted: on October 21,1978, Congress accepted defendants’ proposal and authorized the Secretary of the Army “to replace locks and dam 26, Mississippi River, Alton, Illinois, and Missouri, by constructing a new dam and a single, one-hundred-and-ten-foot by one-thousand-two-hundred-foot lock at a location approximately two miles downstream from the existing dam . . . .” Act of October 21, 1978, Pub.L.No. 95-502, § 102(a), 92 Stat. 1695.
In narrowing the scope of this case prior to trial, the Court relies upon fundamental differences between the National Environmental Policy Act (“NEPA”) and the other statutes and regulations upon which plaintiffs’ base their claims. In prior decisions, this Court has ruled that congressional approval of Lock and Dam 26 at Alton, Illinois, see Pub.L.No. 95-502, 92 Stat. 1693 (1978), did not preclude judicial review of the Environmental Impact Statement (EIS) submitted to Congress as part of the legislative proposal. Order of March 16, 1975. Indeed, after a careful review of the legislative record, the Court was drawn to the conclusion that Congress foresaw— and intended — the judicial scrutiny normally afforded EISs. Id., at 975. The Court’s holding in its Order of March 16, 1979, was fully consistent with its prior conclusion that plaintiffs’ possessed standing to enforce NEPA’s requirement that an EIS accompany “proposals for legislation,” 42 U.S.C. § 4332(2)(c). Atchison, Topeka and Santa Fe Railway v. Callaway, 431 F.Supp. 722, 727 (D.D.C. 1977). (This type of EIS is commonly called a “legislative EIS.”) Both holdings reflect the Court’s belief that judicial review of legislative EISs does not involve undue interference with the legislative process. The EIS requirement was intended' by Congress not merely as a legislative aid, but also “to provide detailed environmental information to the public to permit them to participate in a meaningful way in further decision-making both at the administrative and legislative levels.” Id. at 727 (emphasis added). Thus, plaintiffs’ interest in ensuring defendants’ compliance with NEPA supports judicial review of all aspects of defendants’ EIS.