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j May.2�2. 2000 1.48PM TUSa_ AC1LfT1ES Fi 2 No-4044 P. 5/14 <br /> gum. F1'w. KLEI N FELD ER &- A5S(>ei <br /> GEOTECHNICAL CONSULTANTS • MATERIALS TSTIN rallto <br /> LAND & WATER RESOURCES <br /> 2325 EAST MYRTLE 57'RR;'T FEB <br /> VOCUON.CA 45203.47$4 <br /> (209)949.1345 M <br /> WAL HMTH <br /> File No. S-1 /Own <br /> November 22, 1 <br /> Tracy School District <br /> 315 East 11th Street <br /> Tracy, CA 95376 <br /> Attention: Mr. Robin Elakley <br /> Subject: SOIL BORING & GAS CONTENT TESTS <br /> CLOVER SCHOOL ON EAST SEVERLY PLACE <br /> TRACY, C,AUPORNIA/P.O. #75391 <br /> Gentlemen. <br /> In this letter are presented the results of a soil boring and gas cohtent <br /> tests performed to determine the extent of gasoline contamination in soils <br /> beneath a recently removed gasoline tank. Our services were performed in <br /> response to gasoline odor detected during the subject gasoline tank removal. <br /> Representatives of our firm drilled one test boring on September 17, 1985, <br /> adjacent to the open pit where tanks had recently been removed. The test boring <br /> extended to mvdnism depth of 15 feet below existing ground surface. soil and <br /> water samples were obtained in order to observe and test for gasoline content. <br /> Samples were obtained by driving a: 2-Inch inside diameter sampler into the soil <br /> using a 140-pound hammer falling,appcoAmately 30 inches. Soil samples were <br /> capped with aluminum foil and plastic caps and water samples were placed in <br /> sanitary containers. They were kept cool until delivery to the laboratory for <br /> gasoline content testing. <br /> In general, the soil conditions encountered consisted of a sandy gravel fill <br /> material from the surface to approximately 8 feet. A dense silty sand extended <br /> from 9 feet to the maximum depth drilled of XS feet. No gas odors were detected <br /> in the surface S feet of sampling. Gas odor was detected in the samples <br /> obtained below 8 feet. <br /> Groundwater was encountered at 13 feet below the surface in the test boring. <br /> More detailed descriptions of the soil conditions encountered in tate test <br /> baring are presented on Plate M. AR soils have been classified according to <br /> the Unified Soil Classification System presented on Plate It. <br /> Gasoline Content Tests were performed by Canonie Engineers of Stockton on a <br /> water sample nhtair><ed from approximately 13 feet in the boring adjacent to the <br /> pit. A copy of their results is presented at the and of this report. The test <br /> results are as follows: <br /> CTM*5"fUWR hr I ),Ei <br /> LQ I <br /> 7uMVvaie•ern R.iA•ru"9 'r!o[xeon• 1dC/aIprneD•hrgnh 0 Rollfler[Farx. ♦xnrrnrl•I,'K.+nkrlrx•Rrrzn •!ax VpgAd•5t CnOr;4 Utak <br />