The Inactive Hazardous Sites Branch, within the Superfund Section of the DWM, is responsible for oversight and approval of the assessment and remediation of all historical, and any recent accidental releases of hazardous substances and pollutants with the exceptions outlined below. The Branch oversees remedial actions, conducts any necessary enforcement of assessment and remediation at sites deemed to be a priority, and conducts the work itself at orphaned sites when state resources are available for such.
Exceptions (the agency having jurisdiction is noted):
- Contamination resulting from permitted activities or those that should have been permitted, intentional illegal discharges, and accidental discharges the result of willful neglect of regulations – The particular permitting agency having jurisdiction
- Hazardous waste spills (was a hazardous waste and not a product before the discharge) – DWM Hazardous Waste Section
- RCRA permitted sites - DWM Hazardous Waste Section
- Currently or formerly (closed after 1982) permitted solid waste landfills - DWM Solid Waste Section
- Petroleum spills – DWM Underground Storage Tank Section
- Federal Superfund cleanup of National Priorities List sites and NPL-caliber sites under special agreements with the US EPA – DWM Superfund Section’s Federal Remediation Branch
- Federal Superfund emergency response cleanup – DWM Superfund Section’s Site Evaluation and Removal Branch
- Remedial action of dry cleaner sites (voluntary participants) – DWM Superfund Section’s Special Remediation Branch
- Manufactured gas plant sites participating in state initiative – DWM Superfund Section’s Special Remediation Branch
- Naturally occurring contamination – DWQ Aquifer Protection Section
- Contamination due to agricultural operations – DWQ Aquifer Protection Section
- Pollutant contamination in drinking water wells due to faulty construction – DWQ Aquifer Protection Section
Note that often people are confused by the name of the Branch and the Act. “Inactive Hazardous Sites” by definition are any areas where a hazardous substance release has come to be located and would include active and inactive facilities and a variety of property types. The term “inactive” refers to the fact that cleanup was inactive at large numbers of sites at the time of program enactment.