eluded that because a CERCLA suit for reimbursement of response costs was equitable in nature, no analogous legal limitations period applied, and the doctrine of laches was the only applicable limitation on CERCLA reimbursement suits.
United States v. Mottolo, 605 F.Supp. 898, 901-09 (D.N.H.1985). The Court finds Judge Devine’s analysis convincing, and adopts it entirely.
See also United States v. Conservation Chemical Co., 619 F.Supp. 162, 213 (W.D.Mo.1985). Accordingly, the government’s motion to strike the defendants’ third affirmative defense will be granted.
Defendants’ fourth affirmative defense asserts that the government’s claims “are barred by laches.” However, when the United States brings suit in its sovereign capacity, the doctrine of laches may not bar the suit.
See United States v. Mottolo, supra, and cases cited at 605 F.Supp. 909;
but see United States v. Conservation Chemical Co., supra, 619 F.Supp. at 213, and
United States v. Reilly Tar & Chemical Corp., No. 4-80-469 (D.Minn. June 14, 1984), slip op. at 5 (acknowledging weight of precedent against applying laches to government suits, but refusing to strike laches defense in a factual vacuum). Accordingly, the government’s motion to strike the defendants’ fourth affirmative defense will be granted.
The defendants’ fifth affirmative defense asserts that the government’s claims “are barred under the doctrine of estoppel.” The government argues that it may not be estopped from acting to protect the public interest. In Furcron v. United States, 626 F.Supp. 320 (D.Md.1986), the Court acknowledged that estoppel is available against the United States in very limited circumstances, if at all, but followed the Supreme Court in refusing to adopt “a flat rule that estoppel may not in any circumstances run against the government.” Heckler v. Community Health Services of Crawford County, Inc., 467 U.S. 51, 60, 104 S.Ct. 2218, 2224, 81 L.Ed.2d 42 (1984). The Court declines the invitation to adopt a flat rule here. The government’s motion to strike the defendants’ fifth affirmative defense will be denied.
The defendants’ ninth defense asserts that “at all relevant times, [the defendants] acted in a proper and reasonable manner, exercised due care, complied with all laws and regulations concerning waste disposition, and otherwise conducted [their] operations reasonably and lawfully.” This defense has no application to this suit, because CERCLA imposes strict liability for the classes of defendants listed in § 9607(a)(1), (4), subject only to the very limited defenses enumerated in § 9607(b). See, e.g., J. V. Peters & Co., Inc. v. Administrator, Environmental Protection Agency, 767 F.2d 263, 266 (6th Cir.1985); State of New York v. Shore Realty Corp., 759 F.2d 1032, 1042 (2d Cir.1985); United States v. Maryland Bank & Trust Co., 632 F.Supp. 573, 576 (D.Md.1986) (Judge Northrop). Accordingly, the government’s motion to strike the defendants’ ninth defense will be granted.
The tenth and eleventh defenses assert that at the time of the activities complained of, the defendants could not reasonably have been aware that their activities were unlawful under CERCLA, or that the materials they disposed of were hazardous substances within the meaning of CERCLA. To the extent that these defenses plead a defense of due care, they must be stricken for the reasons stated immediately above.
The government construes these defenses to plead a defense of unconstitutional retroactivity. The defendants’ seventeenth defense asserts that a retroactive application of CERCLA would violate due process and impair the right to contract. The courts have consistently ruled that CERCLA’s language and legislative history overrule the presumption against retroactive application of statutes, and have rejected similar constitutional attacks upon the Act. See, e.g., United States v. Ottati & Goss, Inc., 630 F.Supp. 1361 (D.N.H.1985); United States v. Argent Corp., 14 ELR 20497 (D.N.H. May 4, 1984) [Available on