Regional Airport Authority of Louisville and Jefferson County v. Lfg, LLC Navistar International Transportation Corporation

OPINION

SUHRHEINRICH, Circuit Judge.

I. Introduction

The Comprehensive Environmental Response, Compensation and Liability Act of 1980 (“CERCLA”), 42 U.S.C. §§ 9601-75, permits private party property owners to recover from prior private party property owners certain costs associated with the cleanup of contamination caused by the prior owners, where the cleanup costs were “necessary.” “Necessary” costs means they were incurred in response to a threat to human health or the environment, see 42 U.S.C. § 9607(a)(4)(B), and “consistent” with the National Oil and Hazardous Substances Pollution…