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_ �. Mawrm-.1" — - ;cam,.� 1 11 � <br /> . _ =. <br /> ' October 33, 1987 <br /> AGS 67050-2 <br /> USA Station No. 65, Lodi, California <br /> an equilibrated depth of approximately 42 feet in the ground- <br /> F+ water monitoring wells. Initial depths are with reference to the <br /> existing ground surface at the time of drilling and equilibrated <br /> depths are with reference to the respective well ca., _:gs. <br /> An Organic Vapor Analyzer (OVA) was used during drilling to <br /> measure the organic vapor concentrations of soil samples. <br /> 0 . Readings were collected by placing the rubber cup that skirts the <br /> intake probe flush with the soil in the brass sleeve immediately <br /> �C .er breaking the sampler. The measurements indicated relative <br /> �kf _,.3anic vapor concentrations in the soil, but they cannot be used <br /> directly or proportionally to relate to or assess the <br /> concentrations.of hydrocarbon contaminants in the soil. No <br /> organic vapor concentrations greater than 5 ppm were encountered <br /> in cuttings or samples collected from the three boreholes. These <br /> readings may be considered to be background organic vapor levels. <br /> Soil cuttings excavated during drilling.were stockpiled at one <br /> corner .of the site. These cuttings, totalling approximately 2.5 <br /> cubic yards, remain the responsibility of USA Petroleum Company.' <br /> With USA's authorization, Applied GeoSystems can arrange (with <br /> _._._necessary--laboratory- _.._.. _..-- <br /> _ --- ---- - --- --- documentation) _moo transport-the-.soil-°to-an <br /> 40 appropriate disposal facility. <br /> 7 <br /> a4,®ia'/ied GeoSysteir;� <br />