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F) b Atlantic Richfield Company • 3 ARCO Station #595,6100 North Highway 99 Stockton CA February 15 2002 . Well Survey As reported in the Site Assessment Report dated October 2, 2000, SECOR performed a water well survey to identify the location of permitted water supply wells within a 1/z-mile radius of the site The water well survey included a review of California Department of Water Resources (DWR) files for the area Additionally, SECOR contacted the City of Stockton and San Joaquin County Public Works Department, which are the local water purveyors According to these sources, no municipal wells operate in the survey area by City of Stockton and San Joaquin County Public Works DepartmeyA total of five wells were located within the search area dunng the initial search, including an active domestic well on the so hwest corner of the ARCO property As indicated in aPHS tter dated October 26, 2000, no public water is distributed along the Highway-99 ast Frontage Road At the request of SJCEHD, SECOR completed a 500-foot door-to-door well survey Water supply well location survey forms were submitted to four adjacent businesses (El Rancho Motel, Weinerschnitzel, Auto Factory, and Denny Boy Restaurant) and one residential property (8100 N Highway 99) One survey form, returned by Weinerschnitzel, indicated the presence of a well (well 6/ DW-1) supplying the restaurant The well is constructed of 6-inch steel casing, however, the total depth of the well could not be verified (estimated to be 170 feet deep by the manager of Weinerschnitzel) In addition to dispersing survey forms, SECOR conducted a physical search of the area and found a domestic well (well 71 DW-2) located on the northern portion of the Auto Factory property Conversations with a Denny Boy Restaurant employee revealed that the well on the Auto Factory property (well 7 /DW-2) served both the Auto Factory and the Denny Boy Restaurant No other details about the well completion were recovered PROPOSED SCOPE OF WORK The scope of work for this site assessment will include the installation o0two and three deep groundwater monitoring well at the approximate locations shown on Figure 2 These groundwater monitoring wells have been proposed to delineate the lateral and vertical extent of petroleum hydrocarbons in shallow and deep groundwater at the site The specific scope of work is discussed below • Site Health and Safety As required by the Occupational Health and Safety Adrrunistration (OSHA) Standard "Hazardous Waste Operations and Emergency Response" guidelines (29 CFR 1910 120), and by California Occupational Health and Safety Administration (Cal-OSHA) "Hazardous Waste Operations and Emergency Response" guidelines (CCR Title 8, Section 5192), SECOR will prepare a Site-Specific Health and Safety Plan prior to the commencement of fieldwork The Site-Specific Health and Safety Plan will be reviewed by the field staff and contractors before WPLAN595-2-15-2002