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Idaho

Hazardous waste generators and permitted facilities

Agency Idaho Department of Environmental Quality

Idaho hazardous waste generators and permitted facilities

Hazardous waste in Idaho is regulated by the Idaho Department of Environmental Quality (DEQ). DEQ says hazardous waste is regulated under Subtitle C of the federal Resource Conservation and Recovery Act (RCRA), and that Idaho incorporates those regulations into its Rules and Standards for Hazardous Waste (IDAPA 58.01.05). DEQ inspects businesses that generate hazardous waste, takes enforcement action if necessary, and issues the permits for facilities that treat, store or dispose of it.

In a Phase I ESA

These are the Idaho records of who generated, stored, treated or disposed of hazardous waste. They sit beside the federal records described on the RCRA Generators page and the RCRA TSD page. ASTM E1527-21 lists state hazardous waste facility records among its standard sources. This handbook does not pair a single Idaho list with that type. The distances the standard sets for each kind of record are on the search distances page.

Four Idaho details shape the search.

  • The EPA ID number is the key. DEQ says an EPA identification number is a unique number assigned to a site, and that each site or location receives its own. The activities DEQ lists as needing one include small and large quantity generation, hazardous waste transportation, treatment, storage and disposal, and several used oil activities. The list does not name very small quantity generators, so check the generator category before reading the lack of an ID number as the lack of hazardous waste.
  • Category turns on monthly quantity. DEQ classifies generators by the hazardous waste generated in a calendar month: very small quantity generators at 220 pounds or less, small quantity generators from 220 to 2,200 pounds, and large quantity generators above 2,200 pounds.
  • Generators report to DEQ every year. Small and large quantity generators must report to DEQ annually, by January 31, the types and quantities of hazardous waste generated and shipped in the last year, the waste currently stored on site, and the waste shipped and treated in Idaho or out of state. Small quantity generators must also re-notify DEQ of their hazardous waste activities every 4 years, beginning September 2021. Ask for those reports when you need a history of what a site handled.
  • A permit is a different record. A Hazardous Waste Facility Permit is required for operations that treat, store or dispose of hazardous waste received from off site, that treat, store or dispose of their own hazardous waste on site, or that store their own waste on site longer than 180 days for small quantity generators or 90 days for large quantity generators.

DEQ's industry guidance says dry cleaning operations typically generate hazardous waste, and gives still bottoms, spent filters and spent perchloroethylene as examples.

Where to look a site up

  • DEQ's Issued Permits and Water Quality Certifications page carries a table that can be filtered by type, and Hazardous Waste is one of the types. Each row gives the permittee, a number, the type, the effective and expiration dates, and links to documents. In most of the hazardous waste rows, the entry in the Number/Project column is labeled as an EPA ID.
  • DEQ's EPA ID and Tracking Hazardous Waste page links EPA's site ID lookup under the label Look Up a Site ID.
  • DEQ's Facility Mapper page links a map tool that has a Resource Conservation Recovery Act (RCRA) program category. The pages read do not say which hazardous waste sites that category holds.

Getting the file

DEQ takes requests under the Idaho Public Records Act through its Public Records Request page, which carries buttons to submit a request online, track its status and search the request archives. Have the EPA ID number on hand when you ask. DEQ says some of its records contain confidential information and may not be released.

Sources

Idaho Department of Environmental Quality pages, read October 1, 2026:

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