In Part 2B of Greenberg Traurig Environmental Shareholder David Mandelbaum’s conversation with William Hengemihle of FTI Consulting on Superfund allocation disputes under the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), the federal program for cleaning up sites contaminated by historic operations, they discuss fault and when it may trump cost causation, “transactional fairness,” use of contracts experts, cooperation, and recalcitrance.