MATTER OF CHASM HYDRO, INC. v. New York State Dept. of Envtl. Conservation12 N.Y.3d 710 NY2009Check TreatmentCheck Treatment 12 N.Y.3d 710 (2009) MATTER OF CHASM HYDRO, INC. v. NEW YORK STATE DEPT. OF ENVTL. CONSERVATION. Court of Appeals of New York. Decided May 12, 2009. Motion for leave to appeal granted.