In 2016, EPA published the long-anticipated Hazardous Waste Generator Improvement Rule (HWGIR) updating requirements for generators of hazardous waste. The HWGIR also clarifies EPA polices governing accumulation of hazardous waste in satellite accumulation areas (SAA). Because many states have now adopted the HWGIR into their state hazardous waste regulations, now is a good time for facilities in those states to audit onsite SAAs to be sure the correct hazardous waste practices are being followed. And for facilities in states that have not yet adopted the HWGIR, now is a good time to begin preparing for changes to SAA requirements.