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Superfund Site Report: RALPH GRAY TRUCKING CO.
 
 
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  • Site Description
    Stage of Clean-up: Construction Completed

    Conditions at Proposal (July 29, 1991): The Ralph Gray Trucking Co. site is in a 23-acre residential area near the intersection of Sowell Avenue and Golden West Street, north of the San Diego Freeway in Westminster, Orange County, California. The site was originally proposed under the name "Westminster Tract #2633." From the 1930s through the 1950s, portions of the site were used for disposal of SULFURIC ACID sludge and OIL refinery wastes in unlined surface impoundments. Investigations subsequent to proposal indicate that Ralph Gray Trucking Co. transported the waste materials to the impoundments, which the company owned and operated. In 1936, the company and its owner were convicted in the Justice Court of Huntington Beach Township for maintaining a public nuisance at the site. During the late 1950s, Hintz Development Corp. purchased the site to develop a housing tract. When development began, a "tar sump" containing wastes once stored on-site was discovered. Hintz Development excavated the wastes and placed them into three unlined redisposal trenches also located on-site. After the tract had been built, residents living in houses near the suspected locations of the redisposal trenches complained of black tar-like seeps in backyards, foul odors, and damage to fences, lawns, and patios due to unusual settling of the ground surface.  More...

    Sources of Contamination:
    • Other
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  • Threats and Contaminants
    The waste material in the seeps contains PETROLEUM hydrocarbons; VOLATILE ORGANIC COMPOUNDS (VOCS) including BENZENE, TOLUENE, ETHYLBENZENE, and XYLENE (BTEX); non-volatile, POLYNUCLEAR AROMATIC HYDROCARBONS (PAHS); and various SULFUR compounds including SULFURIC ACID. Inhaling, ingesting, or coming into direct contact with contaminants poses a health threat, as the contaminants are located near play areas, residences, and food preparation and eating areas.


    Contaminants Detected

      Ground
    Water
    Surface
    Water
    Air Soil Other
    ARSENIC    X
    BENZENEXX X 
    BENZO(A)PYRENE X X 
    CHROMIUM    X
    COPPER    X
    COPPER COMPOUNDS    X
    ETHYLBENZENE X X 
    LEADXX X 
    NAPHTHALENE XXX 
    NICKEL    X
    NICKEL COMPOUNDS    X
    PHENANTHRENE X X 
    TOLUENE X X 
    XYLENE (MIXED ISOMERS) X X 


    Groundwater and Drinking Water

    Were drinking water wells shut down due to contamination? No data
    Are drinking water wells potentially threatened? No data
     
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  • Pre-Cleanup Rankings
    EPA Hazard Ranking System scores for RALPH GRAY TRUCKING CO.:

    Less Hazard National Average More Hazard
    0%         50%         100%

    Overall site:
    Surface water migration:
    Ground water migration:
    Air migration:
    Soil exposure:


    Rank Superfund sites in the U.S., CALIFORNIA, or in ORANGE County by EPA Hazard Ranking Scores.

    *Note: EPA's Hazard Ranking System is designed to screen and prioritize sites for the Superfund program, based on limited data available at time of listing. These scores are not based on a comprehensive risk assessment of the site and do not reflect conditions after initiation of cleanup work.
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  • Site Information
    Site Name: RALPH GRAY TRUCKING CO.
    EPA ID: CAD981995947
    Address: SOWELL AVE & GOLDEN WEST ST
    WESTMINSTER, CA 92683
    Other Names: WESTMINSTER TRACT
    Site Ownership: Private
    Category of Site: No data
    Date of Final Listing on the NPL: October 14, 1992
     
    List Standard Industrial Classifications (SIC) associated with current and past activities at the RALPH GRAY TRUCKING CO. Superfund site.
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  • Potentially Responsible Party (PRP) Involvement
    Number of PRPs currently associated with this site: 0
    Hazardous waste received from off-site generators/transporters? Yes
    Number of past and present PRPs who contributed less than 1% of the waste: 0
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