July 1, 2025 – The Department of Natural Resources’ (DNR) communications that added PFAS chemicals to its enforcement of the Spills Law fell within acceptable guidance documents – not illegal regulations – a 5-2 Wisconsin Supreme Court majority recently decided in Wisconsin Manufacturers and Commerce, Inc. (WMC) v. Wisconsin Natural Resources Board, 2025 WI 26 (June 24, 2025).
Justice Janet C. Protasiewicz, writing for the majority, concluded that statutory definitions of an administrative rule did not require “the
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