Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Superfund record of decision : Rocky Mountain Arsenal (Operable Unit 21), CO : ninth 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 1991
Report Number EPA/ROD-R08-91-050
Stock Number PB92-964405
OCLC Number 28644203
Subjects Hazardous waste sites--Colorado.
Additional Subjects Superfund ; Hazardous materials ; Waste disposal ; Remedial action ; Pollution control ; Pesticides ; Volatile organic compounds ; Chemical industry ; Ground water ; Water pollution ; Storage tanks ; Colorado ; Record of Decision ; South Tank Farm Plume ; Adams County(Colorado) ; EPA region 8 ; Cleanup operations
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA ROD-R08-91-050 Headquarters Library/Washington,DC 10/27/2009
NTIS  PB92-964405 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 01/01/1988
Collation 60 pages
The Rocky Mountain Arsenal (RMA) (Operable Unit 21) site comprises part of the 17,000-acre RMA site, which is a former U.S. Army chemical warfare and incendiary munitions manufacturing and assembly plant in Adams County, Colorado. From the 1950s until late 1969, the U.S. Army used the RMA facility to produce the nerve agent GB (isopropylmethyl-phosphonofluoridate). In addition, between 1947 and 1982, private industries leased major portions of the plant's facilities to manufacture various insecticides and herbicides. Operable Unit 21 (OU21), the South Tank Farm Plume (STFP), is one of several areas being addressed as part of the Other Contaminated Sources IRA. From 1947 to 1978, STF tanks 464A, 464B, and others were used intermittently to store bicycloheptadiene (BCHPD) and dicyclopentadiene (DCPD) bottoms generated from pesticide manufacturing. A number of U.S. Army investigations have revealed ground water contamination originating from the areas of light nonaqueous phase liquid (LNAPL) located near tank 464A. Recent investigations have shown that the STFP does not pose significant risk to public health or the environment. The ROD addresses interim management of migration of the STFP and is consistent with the Final Response Action. The primary contaminants of concern affecting the ground water are VOCs including benzene, toluene, and xylenes. The selected interim remedial action for the site is included.
"06/06/91." "PB92-964405." "EPA/ROD-R08-91-050." "Office of Emergency and Remedial Response."