On March 23, the Second Circuit issued its opinion in N.Y. Dep’t of Enviro. Conservation v. FERC, Case No. 19-1610 (i.e., the “Empire Pipeline” case). The case concerns the Federal Energy Regulatory Commission’s (FERC or Commission) determination that the New York State Department of Environmental Conservation (NYSDEC) waived its water quality certification authority with regard to FERC’s issuance of a gas pipeline certificate when NYSDEC sought to extend its review period beyond the one-year deadline under Section 401 of the Clean Water Act (CWA or Act) by agreeing with the applicant to “post-date” the filing date of its water quality certification application by several weeks.