Reversing district court's grant of summary judgment in part because of inappropriate credibility determination and noting that "credibility, in the ordinary course of things, is for a fact-finder to evaluate"
Holding primary liability insurer need not show prejudice for late notice defense, but noting exceptions to rule, inapplicable here, where insurer received timely notice of occurrence or claim, but late notice of lawsuit
Holding that a delay could not be excused on the basis of lack of knowledge or belief in nonliability because "the insureds failed to exercise reasonable care and diligence in ascertaining the facts about the alleged accident and in evaluating their potential liability"
Adopting the common law definition of implied assumption of risk, and citing treatises: Prosser, Law of Torts, at 442 (4th ed.); Schwartz, Comparative Negligence § 9.2; Comparative Negligence Law Practice § 4.20(b) (Matthew Bender); Restatement (Second) of Torts § 496(b)
Holding that allegations of a complaint fell within the terms of a pollution exclusion clause where the complaint alleged that "during some thirty years, [the defendant in the underlying action] `disposed' of its hazardous manufacturing waste by methods which the defendants `knew or should have known . . . resulted in their release into the environment,'" and specified that "the wastes were disposed of . . . in several places on the site, including: the parking lot, sinks which discharged into septic systems on the site, and drains which discharged through sewage pipe into a drainage ditch . . ."