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rw <br /> December 4, 1989 <br /> Work Plan Evaluation of Sail and Ground Water AGS 38032-3lV <br /> [Jnocal Station No. 6981, Stockton, California <br /> northwest corner of March Lane and Pacific Avenue. These two branches lie beneath the <br /> sidewalks that farm the east and south boundaries of the Bite. 'There are no septic tanks <br /> Approximately 1$00 feet southeast of the site trending east <br /> in the area to our knowledge. App y , 3 <br /> and west is the Calaveras River. <br /> PREWIOUS WORK <br /> ollected nine soil samples from <br /> On May i3, 1488,Applied GeoSysiems ctest pits excavated <br /> to 4 feet below grade by Bassett Construction of Sacramento, California (Applied <br /> GeoSystems Report No. 38032-1, Duly 8, 1988). The shallow excavations (test pits) were <br /> on each side of the two dispenser islands and one perpendicular to and at the southern end <br /> of the dispenser islands. Sample locations are shown on the Gent.'alized Site Plan (Plate <br /> der the heading Location Number. 'I*hese samples <br /> P-2),and are referenced in the tables un <br /> were collected in response to suspected contamination eduring installation o€ <br /> a gasoline-blending valve at the service station on May 12, 1988, by Personnel of Bassett <br /> Construction. Results of the laboratory analyses of the soil samples, shown on Table 1, <br /> indicated total petroleum hydrocarbon (TPH) as gasoline levels were below the laboratory <br /> detection limits for the test used in soil samples collected from sample locations 1, S. 6, 7, <br /> and 8; 4 parts per million (ppm) in the sample from sample location 4: 227 ppm from <br /> sample location 3; and 382 ppm in the sample from sample location 2 (Plate P-2). <br /> 3 <br /> OeOS terns <br />