Glossary

The acronyms and terms EPA's ECHO and RCRAInfo data uses, explained.

RCRA: Resource Conservation and Recovery Act — the federal law governing hazardous-waste generation, transport, treatment, and disposal.
SNC (Significant Non-Complier): EPA's flag for a facility with the most serious, ongoing compliance problems, based on violation severity and duration.
TSDF: Treatment, Storage, and Disposal Facility — a site permitted to treat, store, or dispose of hazardous waste.
LQG / SQG / VSQG: Large/Small/Very Small Quantity Generator — RCRA size classes based on how much hazardous waste a facility generates per month.
ECHO: EPA's Enforcement and Compliance History Online database — the source for facility identity and compliance-summary data on this site.
NAICS code: North American Industry Classification System — the standard code used to categorize a business by its primary industry.
Open violation: A recorded violation with no resolved date on file as of the latest EPA snapshot.