Protecting Public Health and the Environment.

EPA National Priorities List

The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) passed by Congress in 1980 authorized EPA to take remedial actions to clean up certain sites that are contaminated by hazardous substances. To cover the costs of cleanup, EPA was authorized to make the owners and operators of contaminated sites and the generators and transporters of the hazardous substances pay. The law also created a fund known as Superfund to help cover cleanup costs at sites placed on the National Priorities List (NPL) of seriously contaminated sites.

CERCLA allows EPA to undertake both short- and long-term removals of hazardous substances. If a hazardous waste release poses an immediate threat to public health or the environment, EPA can step in promptly. If a release is serious but not immediately life-threatening, EPA can undertake long-term remedial response actions. Long-term actions can only be conducted at sites listed on the NPL.

To determine if a site qualifies for cleanup under the Superfund program, EPA scores the site using the Hazard Ranking System (HRS). The HRS takes into account the volume and toxicity of the contamination and the number of people that may be affected by it, then generates a score from 0 to 100. Sites that score above 28.5 qualify for listing on the NPL. Sites are categorized as either proposed, final, or deleted. Following are the sites identified in Idaho:

Proposed Sites

County Nearest City Site Name
Benewah St. Maries St. Maries Creosote
Lemhi Lemhi Blackbird Mine
Valley Yellow Pine Stibnite/Yellow Pine Mining Area

Final Sites

County Nearest City Site Name
Butte, Bingham,
Bonneville, Clark, Jefferson
Idaho Falls Idaho National Laboratory (US DOE)
Caribou Soda Springs Kerr-McGee Chemical Corporation
Caribou Soda Springs Monsanto Chemical Company
Elmore Mountain Home Mountain Home Air Force Base
Power, Bannock Pocatello Eastern Michaud Flats
Shoshone Smelterville Bunker Hill Mining and Metallurgical Complex

Deleted Sites

County Nearest City Site Name
Bannock Pocatello Pacific Hide & Fur Recycling Co.
Bannock Pocatello Union Pacific Railroad Co.
Kootenai Rathdrum Arrcom

Staff Contacts

Site Remediation Manager
Dean Nygard
DEQ State Office
Waste Management & Remediation Division
1410 N. Hilton
Boise, ID 83706
(208) 373-0285
dean.nygard@deq.idaho.gov

Mine Waste Program Manager
Rob Hanson
DEQ State Office
Waste Management & Remediation Division
1410 N. Hilton
Boise, ID 83706
(208) 373-0290
rob.hanson@deq.idaho.gov

Related Page

National Priorities List (NPL)

Related Pages

Preliminary Assessment Program for Mined Lands and Industrial Facilities

Risk Evaluation Manual