Release material classification

NYSDEC Spill Incidents — the complete New York spill/release archive published on the state open-data portal (data.ny.gov Socrata dataset u44d-k5fk). 570,234 records: chemical and petroleum spills reported to NYSDEC under Article 12 of the Navigation Law, 6 NYCRR 613.8 (PBS) and 595.2 (CBS); spills active as of 1986-04-01 plus all reported since (some records to the late 1970s), current through the fetch date. Native NY source (provider ny_dec) — no provider divergence. Each record: spill number, facility name, street/locality/county/zip, DEC region, spill & received & close dates, contributing factor, source, material name/family, quantity/units, recovered. No coordinate columns.