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olo ica!?ecknics 2nc. : <br /> Ge 9 `� Page 3 <br /> Project No.: 675.2 <br /> Murray <br /> Soil Investigation Report <br /> January 5, 1999 <br /> L.2 <br /> • The soil in this boring consisted of a dark brown, very plastic clay. <br /> • The sample was submitted to Sherwood labs and tested for TEPH-D, MO by EPA <br /> method 8015m and Halogenated Solvents by EPA method 8010. <br /> • On December 15, 1998, under the supervision of Lori Duncan of SJC PHS/EHD the <br /> boreholes were grouted with a neat cement grout and finished with a concrete cap <br /> flush to the floor. <br /> Old Domestic Well Abandonment <br /> 1. On December 29, 1998 the old domestic well at the site was abandoned by Clark Well <br /> Drilling of Stockton, CA. <br /> 2. The pump was first removed and the casing was perforated from the bottom to the top to <br /> allow grout to flow into the formation. <br /> 3. The well boring was grouted by placing 80 feet of drill pipe into the 8-inch diameter well <br /> casing. Total depth of the well was 92 feet. A 9-sack mix was pumped through the drill <br /> pipe to the bottom of the well. The grout was pumped until it reached the surface. <br /> 4. The casing was cut off 3 feet below ground surface. <br /> 5. The work was witnessed by John Yoakum of SJC PHS/EHD and Michael Niemi of <br /> Geological Technics Inc. <br /> 2.0 SITE GEOLOGY <br /> The soils beneath the site consisted of very dark, very plastic clay. The soil was moist, even <br /> beneath the building. Groundwater was not encountered in any of the boreholes or the <br /> trench. <br /> 3.0 ANALYTICAL RESULTS <br /> Sample Results <br /> 1. Former UST (T-1) <br /> • No BTEX, TPH-G or TEPH was detected in this sample. <br /> 2. Floor Drains & Septic Tank/Rock Well (Septic-1) <br /> • No TEPH-Diesel, Motor Oil, Kerosene and Dielectric Oil was detected in this sample. <br /> • Halogenated Solvents, Ethyl Benzene was . detected at 72,000 µg/Kg and <br /> Trichlorofluoromethane was detected at 58 µg/Kg. <br /> ❑ Ethyl benzene is used as a resin solvent. <br /> ❑ Trichlorofluoromethan is used in refrigeration equipment and as an aerosol <br /> propellant. 'S'�nevL"I' - <br /> • Acetone was not detected. <br /> 3. Concrete Scar <br /> • P-1 <br /> ❑ No sample was collected or tested. <br /> • P-2 <br /> ❑ A slight amount of motor oil range organics were detected in the soil sample, 6 <br /> mg/Kg. This is slightly above the detection limits. <br /> ❑ Halogenated Solvents were not detected <br />