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- <br /> - <br /> of ground <br /> excavation was takers to top the surface) <br /> earliert the th (14 feet below no visible <br /> As stated to that deg There were samples <br /> The native soil clayey silt• or <br /> water. fine sandy, in the excavations <br /> is of a Pathways <br /> observed <br /> preferential •boring the monitor wells- Calif. NW/4 15, <br /> obtained while hic map (Tracy, the site. <br /> ure 2 U.S.G.S toPograp the <br /> 3. Fig shows no surface ce utility conduits in <br /> 19541 shows <br /> routes of subsurface <br /> Quadrangles <br /> rigure 3A511 <br /> the site. <br /> vicinity SAMPLING AND S <br /> {other than the minimum <br /> additional samplesas resent? <br /> 3 1, were where obviously contaminated soil w p with a <br /> required) taken visually and arts <br /> i soil was field screened <br /> excavated that was calibrated with a petroleum <br /> Yes. All standard• Na obvious <br /> petroleum <br /> photoionizing detector vapor round <br /> asolin readings were evident <br /> per million g but odor and pxaterial and from the g <br /> was evident Samples of <br /> staining tank field backfill mtank excavation• les <br /> the excavated the base of the d Sid <br /> water <br /> samp <br /> ��- founthe tank excavation an <br /> water discovered at <br /> the.eo,ank excavaater tion were obtained. soil <br /> of oil excavation indicated was <br /> This area <br /> sampling of the waste a hydrocarbons• sidewall .ar,a the <br /> Initial with motor oil rang detection <br /> contaminated les were obtained <br /> samplesmwereh below <br /> overexcavated and samp <br /> Of true over excavation; <br /> base conform to <br /> limits• analytical protocols 10 August <br /> Did sampling and the T-RBSRFPE&xOUTS, <br /> 2. described in LUFT and <br /> standards <br /> 1990? <br /> YES. oratory analyses used? <br /> 3. were the appropriate lab <br /> S2A/Qc results <br /> YES. laboratory <br /> analysis and <br /> 4, Were the labor <br /> submitted? <br /> YES. table, <br /> a) Were samples taken from <br /> of high wateresent in the excavation pit? <br /> -- --- 5.---xn cases water p------------- - --- --------- - ---- <br /> --- <br /> the sidewalIs and._b1-was- <br /> Page3 . <br />