On August 10, 2015, the Minnesota Court of Appeals declared valid water quality standards adopted by the Minnesota Pollution Control Agency (MPCA) to limit eutrophication— the over-enrichment of waters with nutrients, which stimulates excessive growth of aquatic plants—in rivers and streams. See Minn. R. 7050.0150, .0220, .0222 (Supp.2014).  Minnesota Envtl. Sci. & Econ. Review Bd. v. Minnesota Pollution Control Agency, ___ N.W.2d ___, A14-1694 (Minn. Ct. App. Aug. 10, 2015). The Minnesota Environmental Science and Economic Review Board (MESERB) and other petitioners brought a declaratory judgment action in the Court of Appeals alleging that MPCA failed to comply with statutory rulemaking procedures by not responding in a meaningful way to the petitioners’ comments during the rulemaking process. In particular, petitioners argued that the MPCA relied on…