Record Display for the EPA National Library Catalog


Main Title Superfund record of decision : Mystery Bridge at Highway 20, WY : first remedial action.
CORP Author United States. Environmental Protection Agency.
Publisher U.S. Environmental Protection Agency, Office of Emergency and Remedial Response ; Reproduced by National Technical Information Service,
Year Published 1990
Report Number EPA/ROD-R08-90-033
Stock Number PB91-921481
OCLC Number 28643101
Subjects Hazardous waste sites--Wyoming
Additional Subjects Hazardous materials ; Pollution control ; Waste disposal ; Ground water ; Sites ; Describing ; Industrial wastes ; Volume ; Contaminants ; Benzene ; Toluene ; Excavation ; National government ; State government ; Cost analysis ; Xylenes ; Hydrocarbons ; Gas production ; Superfund ; Record of Decision ; First Remedial Action ; Cleanup ; Volatile organic compounds ; Natrona County(Wyoming) ; Ethylene/trichloro ; Ethylene/chloro
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
ELBD ARCHIVE EPA ROD-R08-90-033 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
NTIS  PB91-921481 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 107 pages
The Mystery Bridge at Highway 20 site is an industrial area with two onsite residential subdivisions, in Natrona County, one mile east of Evansville, Wyoming. A portion of the site lies within the 100- and 500-year floodplains of the North Platte River and Elkhorn Creek. Two plants are located at the site: the DOW/DSI facility, an oil and gas production enhancement service facility; and the KN plant, which is a natural gas fractionation, compression, cleaning, odorizing and transmission plant. The site overlies a contaminated alluvial aquifer. In 1965, an underground pipe burst, releasing 5,000 to 10,000 gallons of absorption oil from the KN facility into the soil. From 1965 to 1987, a flare pit was used by KN to collect spent materials and wastes, and an onsite catchment area was used to collect the contaminated surface runoff etc. In 1987, site investigations revealed the presence of aromatic hydrocarbons in the soil in this area. The Record of Decision (ROD) addresses remediation of the onsite ground water emanating from the DOW/DSI and KN facilities; the VHO and BETX plumes respectively. The primary contaminants of concern affecting the ground water are VOCs including benzene, PCE, TCE, toluene, and xylenes.
"09/24/90." "PB91-921481." "EPA/ROD-R08-90-033." "Office of Emergency and Remedial Response."