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June 13, 1997 <br /> Page 3 <br /> • Arc Pump Welding, 1211 South Turnpike Road <br /> Substance Benzene <br /> Media affected Soil/Sand/Land <br /> Distance 0 07 miles, northwest of the site <br /> Remedial Action Leak being confirmed(State and Regional LUST <br /> database) <br /> • Exxon#7-0137, 1605 South El Dorado Street <br /> Substance Hydrocarbons <br /> Media affected Aquifer <br /> Distance 0 16 miles, south of the site <br /> Remedial Action Remedial action taken (State and Regional LUST <br /> database) <br /> In addition, two sites were reported with registered USTs within 112-mile radius of the <br /> site, 1) Toys Service Station at 402 East Charter Way, approximately 0 17 miles east <br /> (downgradient) of the site, and 2) Senior Service Agency at 1410 South California <br /> Street, approximately 0 25 miles east (downgradient) of the site <br /> Well Survey <br /> PACIFIC conducted a records search at the California Department of Water Resources <br /> (DWR) in Sacramento, California and identified a total of nine wells within a 112-mile <br /> radius of the site (Table 1) Of the nine wells, one was reportedly used for domestic <br /> purposes, one well reportedly used for domestic and irrigation purposes, five monitoring <br /> wells , and two wells reported with an unknown purpose All wells were constructed at <br /> a minimum depth of 190 feet, with the exception of the five monitoring wells No <br /> downgradient wells were reported within a 112-mile radius of the site <br /> The well nearest to the site is reported approximately 0 13 miles north (crossgradient) of <br /> the site The well was installed on September 30, 1916 at a depth of 835 feet The use <br /> of this well was not reported in the Well Driller's Report A summary of data on file at <br /> the DWR regarding these wells is presented in Table 1 <br /> BENEFICIAL USE OF GROUNDWATER <br /> On April 15, 1997, the Stockton Municipal Utilities Department of the Division of <br /> Water-Sewer District (SMUDDWSD) was contacted to verify the source of drinking <br /> water for the City of Stockton According to the SMUDDWSD, a combination of pre- <br /> treated water coming from the Stockton East Municipal District and treated <br /> groundwater from municipal wells managed by California Water Service Company <br /> (CWSC) is supplied to the City of Stockton In addition, the SMUDDWSD stated that <br /> the usage of municipal wells are primarily during the summer season <br /> 9201036A/CLOSURE DOC <br />