Chemical registry number

Pennsylvania DEP's public Hazardous Site Response Actions List is an annually refreshed SSRS CSV report derived from eFACTS and covering hazardous-site response work since 1988. The integrated product filters the report to HSCA initiations and emits 1,554 response-action × environmental-medium × substance rows across about 489 sites. It preserves facility identity, owner/operator, address, coordinates, Pennsylvania Priority List dates, response actions, media, and contaminant columns, while prepending normalized location fields and an HSCA indicator.

ADEQ's public quality-assured ArcGIS table of Arizona drinking-water PFAS laboratory results, with one record per sample and tested compound, detection notation, concentration, water-system linkage, and location.

Florida State Watch Office (SWO) oil and hazardous-materials spill/incident archive — the 'Hazardous Materials/Petroleum Spills (SWO Incidents)' feature layers hosted in the FL Division of Emergency Management ArcGIS Online org and published for FL DEP. 22,153 statewide incidents (Hazardous Materials 22,041 + Petroleum Spill 112), full historical archive reported 2011-07 through 2024-08. The two upstream layers (identical schema) are unioned into one source; IncidentType/source_layer distinguish them. Each record carries incident ID/number/type/name, status, county, dates, signed WGS84 coordinates, report URL, and (where available) facility name, address, chemical released, amount, and CERCLA §304 flag.