Superfund Record of Decision (EPA Region 8): Chemical Sales Site, (New Location), (Operable Uit 2), Adams County, Co. (Second remedial action), June 1991

Technical Report · Thu Jun 27 04:00:00 EDT 1991

OSTI ID:7222302

The Chemical Sales (New Location) (Operable Unit 2) site is an active chemical sales and storage facility in Commerce City, Adams County, Colorado. Land use in the area is predominantly industrial. The site is a portion of a 4-square-mile-area, which consists of single and multi-family residences, small business, municipal facilities, and agriculture, and undeveloped land. Between 1985 and 1990, three onsite chemical releases of hazardous substances from the CS facility into onsite soil and ground water were documented. First in 1985, approximately 200 gallons of methylene chloride were released during a chemical transfer second, in 1986 VOC-contaminated rain water was discharged into a nearby drainage ditch. And this in 1990, approximately 3,700 gallons of methanol were spilled onto the ground near the CS tank farm. The site has been divided into three operable units (OUs) for remediation. A previous Record of Decision (ROD) addressed onsite soil and ground water contamination as OU1. This ROD addresses OU2, the VOC-contaminated ground water plume, which is north of Sand Creek. The primary contaminants of concern affecting the ground water are VOCs including benzene, PCE, and TCE. The selected remedial action for OU2 of this site includes pumping and onsite treatment of ground water using air stripping, followed by onsite reinjection of treated water into the aquifer; annual ground water monitoring; and voluntary abandonment of bedrock wells.

• Research Organization: Environmental Protection Agency, Washington, DC (United States). Office of Emergency and Remedial Response
• OSTI ID: 7222302
• Report Number(s): PB-92-964408/XAB; EPA/ROD/R--08-91/046
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540250* -- Environment
Terrestrial-- Site Resource & Use Studies-- (1990-)
AQUIFERS
AROMATICS
BENZENE
CHEMICAL WASTES
CHLORINATED ALIPHATIC HYDROCARBONS
COLORADO
CONTAMINATION
DEVELOPED COUNTRIES
ENVIRONMENTAL TRANSPORT
FEDERAL REGION VIII
GROUND WATER
HALOGENATED ALIPHATIC HYDROCARBONS
HAZARDOUS MATERIALS
HYDROCARBONS
HYDROGEN COMPOUNDS
LAND POLLUTION
LAWS
MANAGEMENT
MASS TRANSFER
MATERIALS
METHYLENE CHLORIDE
MONITORING
NONRADIOACTIVE WASTES
NORTH AMERICA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
POLLUTION LAWS
REMEDIAL ACTION
SITE SURVEYS
SOILS
US SUPERFUND
USA
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
WATER
WATER POLLUTION