List of Superfund sites in Wyoming


This is a list of Superfund sites in Wyoming designated under the Comprehensive Environmental Response, Compensation, and Liability Act environmental law. The CERCLA federal law of 1980 authorized the United States Environmental Protection Agency to create a list of polluted locations requiring a long-term response to clean up hazardous material contaminations. These locations are known as Superfund sites, and are placed on the National Priorities List.
The NPL guides the EPA in "determining which sites warrant further investigation" for environmental remediation. As of March 26, 2010, there were two Superfund sites on the National Priorities List in Wyoming. No other sites are currently proposed for entry on the list, and one site has been cleaned up and removed from the NPL.

Superfund sites

CERCLIS IDNameCountyReasonProposedListedConstruction
completed		Partially
deleted		Deleted
WYD061112470Baxter/Union Pacific Tie TreatingAlbanyPentachlorophenol, benzene, naphthalene, toluene, and phenol contaminated the shallow ground water beneath the site and the Laramie River.12/30/198209/08/198307/26/2002-12/06/1999
WY5571924179F. E. Warren Air Force BaseLaramieGasoline, solvents, oil, lubricating oils, hydraulic fluid, ethylene glycol, batteries, battery acid, coal ash, fly ash, paint, and trichloroethylene were formerly disposed of on the base. TCE and chloroform are present in monitoring wells on the base.07/14/198902/21/1990---
WYD981546005Mystery Bridge Rd/U.S. Highway 20NatronaAn unlined waste pit on the site contained volatile halogenated organic compounds, xylenes, ethylbenzene, toluene, naphthalene, chrysene, methylnaphthalene, and benzene. Chlorinated organic solvents, including trichloroethylene, tetrachloroethylene, 1,1,1-trichloroethane, and 1,2-dichloroethylene were found in private wells 0.5 mile away.06/24/198808/30/199012/16/1993--