Cities of Azusa, Baldwin Park, City of Industry, Irwindale, and West Covina

Cities of Azusa, Baldwin Park, City of Industry, Irwindale, and West Covina

Azusa "Baldwin Park" "City of Industry" Irwindale "West Covina"

POTENTIALLY RESPONSIBLE PARTIES

NAMES AND FACILITY ADDRESS

SAN GABRIEL VALLEY AREA 2 SUPERFUND SITE, BALDWIN PARK OPERABLE UNIT

 

I. LARGEST CONTRIBUTORS TO THE GROUNDWATER CONTAMINATION (in alphabetical order)

PRP FACILITY ADDRESS STATUS
Aerojet General Corporation (and Gencorp Inc.) 1100 W. Hollyvale Street in Azusa, CA funding cleanup and EPA oversight costs
Huffy Corporation 1120 W. Foothill Blvd. in Azusa, CA bankrupt
Oil & Solvent Process Co. 1704 W. First Street in Azusa, CA funding cleanup and EPA oversight costs
Winco (formerly Wynn Oil Company) 1151 W. 5th Street in Azusa, CA funding cleanup and EPA oversight costs

II. LESSER CONTRIBUTORS TO THE GROUNDWATER CONTAMINATION (in alphabetical order)

PRP FACILITY ADDRESS STATUS
Azusa Gas Systems 1201 W. Gladstone Street in Azusa, CA funding cleanup and EPA oversight costs
Azusa Pipe and Tube Bending 766 N. Todd Ave in Azusa, CA cashout settlement
Allegiance Healthcare Corporation (formerly known as Baxter Healthcare) 4401 Foxdale Avenue in
Irwindale, CA
cashout settlement
Fairchild Holding Corporation 601 S. Vincent Avenue in Azusa, CA funding cleanup and EPA oversight costs
The Hartwell Corporation 701 W. Foothill Boulevard in Azusa, CA funding cleanup and EPA oversight costs
J. H. Mitchell and Sons Distributors, Inc. 14515 Joanbridge Street in Baldwin Park, CA cashout settlement
Leach International 717 North Coney Avenue in Azusa, CA cashout settlement
Lockheed-Martin Corporation 1004 W. 10th Street in Azusa, CA cashout settlement
Mobil Oil Corporation 1004 W. 10th Street in Azusa, CA cashout settlement
Phaostron Instruments & Electronic Company 717 North Coney Avenue in Azusa, CA cashout settlement
Reichhold Inc. (formerly known as Reichhold Chemicals) 237 Motor Ave in Azusa, CA funding cleanup and EPA oversight costs
Rubber/ Urethanes Inc. 968 W. Foothill Blvd. in Azusa, CA bankrupt
Screwmatic Inc. 925 W. First Street in Azusa, CA cashout settlement
U.S. Relay 717 North Coney Avenue in Azusa, CA cashout settlement
U.S. Department of Defense 1100 W. Hollyvale Street in Azusa, CA past and future cost settlement
Valspar Corporation 1004 W. 10th Street in Azusa, CA cashout settlement
White and White Properties 145 S. Irwindale Ave and 204 S. Motor Avenue in Azusa, CA cashout settlement

The Baldwin Park Operable Unit addresses multiple, commingled plumes of groundwater contamination which have resulted in an area of contamination over a mile wide and eight miles long. The depth to the groundwater varies from about 150 to 350 feet, and the groundwater contamination extends from the water table to more than 1,000 feet below ground surface. The most prevalent contaminants in the groundwater are trichloroethene (TCE), perchloroethylene (PCE), carbon tetrachloride, perchlorate, and N-nitrosodimethylamine (NDMA). TCE, PCE, and carbon tetrachloride are solvents used for degreasing and cleaning; perchlorate is a component of solid-fuel rockets; and NDMA is associated with liquid-fuel rockets. Other volatile organic compounds (VOCs) are also present, including the chemical 1,4-dioxane, which has been used as a stabilizer in chlorinated solvents, and 1,2,3-trichloropropane. The peak contaminant concentration measured in groundwater in the Baldwin Park area is 38,000 ug/l PCE; more than 7500 times the maximum contaminant level (MCL) allowed by Federal and State law...
http://yosemite.epa.gov/r9/sfund/r9sfdocw.nsf/webdisplay/oid-ac9cfdb37a58aab78825660b007ee670?OpenDocument#documents

The contaminated areas underlie significant portions of the San Gabriel Valley and the cities of Alhambra, Arcadia, Azusa, Baldwin Park, Industry, Irwindale, El Monte, La Puente, Monrovia, Rosemead, South El Monte, and West Covina. These have been divided into the following Operable Units: Alhambra (Area 3), Baldwin Park, El Monte, South El Monte, Puente Valley, and Whittier Narrows.

...Groundwater contamination was first detected in the San Gabriel Valley in 1979. Following this discovery, the California Department of Public Health (CDPH, formerly the Department of Health Services) analyzed water samples collected from water supply wells throughout the Valley to assess the extent of contamination. By 1984, 59 wells were found to be contaminated with volatile organic compounds (VOCs). In the late 1990s, perchlorate and other newly discovered contaminants were detected in the additional water supply and groundwater monitoring wells.

Despite the widespread extent of contamination, the San Gabriel Basin aquifer continues to provide approximately 90 percent of the domestic water supply for the Valley's one and one-half million residents...

http://yosemite.epa.gov/r9/sfund/r9sfdocw.nsf/webdisplay/oid-ac9cfdb37a58aab78825660b007ee670?OpenDocument#prps 

http://www.epa.gov/superfund/sites/npl/nar925.htm

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