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aM <br /> -c?-01 17:=7RM ^.02 76=-� S A 3 <br /> SENT BV:TAHOE PR�3DUCT5 <br /> t <br /> a - <br /> f <br /> Ground water surfacQ elevations of t,Ie5a W2115 for varying <br /> dates follow: <br /> FALAI 9-9CPrZFNG a <br /> 03KOlM - 27. <br /> - 32. 1 <br /> 02C41M <br /> - 45.0 - 47. 1 l Est ) 47.$ <br /> - 2 <br /> ��4J02M 0•0 - 26.5 NA <br /> 05H01M NA - 23.0 NH <br /> 12Jfl1M 37. 1 <br /> -- 44.6 NA <br /> Since the data set for Spring of 199Q was most complete$ We <br /> used this information to construct rhkve `nd water Elevation <br /> and <br /> eelforWell - 02r-OIMwas <br /> Gradient map ( Fiq 1 ) • <br /> not measured in spring of 1990, we estimated this elevation based <br /> on data from the surrounding wells. <br /> Our anslysis of the CDwR ground water elevation data Shows <br /> at <br /> that the elevation of the water table oaneath the ontafttheesitu <br /> about - 36.0 ft MSL. Since the topographic <br /> is +12 ft, depth to ground water is about 48 ft 8G5. Duwhich was bated r first <br /> estimate of depth to groundh�aterl <br /> water tabic has dropped nabCut data, <br /> was about 35 ft average. <br /> sastradient <br /> eatl 8ftadithis fallgper, ic�C�O ftdafater plangdiistance19 N 50 degree <br /> Annual precipation in Stockton is about <br /> l �ev�ra' dr�ughtg <br /> the past 5 years however there has <br /> the <br /> is currently less than this. historical water leve. <br /> records for Well # 03K01M, which is the closest well �befs�MSL <br /> sinew that the ground water table varied from <br /> between 19ba and 1973. oThelwater MSL inbl4Ble elevIt�flucustedn then lnbetween <br /> from - 50 MSL in 1973 t <br /> 15 and - 10 MSL from 1993 to 1987#t MSL water tAbIM <br /> present <br /> declined about 2{z ft from - 10 to - 36 <br /> activities at this sits, <br /> During exploration trenching <br /> }kerosene Contaminated soils <br /> weleldet9cL ed ihetcontaminated he northwest ^soils <br /> of the property. ( Plate 1,2,3 & 4 ) • <br /> were determined by tremits of t <br /> nching <br /> The Keld <br /> rostne contaminated soils nccupied �a volume that <br /> bait Th described as a " squashed PiPQ 5hapw of <br /> the contamination daylighhedcoatasurfa ,ctnce nde5cenda�ear the lataanoangle <br /> rt,•, sample 13$ ( Plate 1 The <br /> the north ( plate 2 ) • 1S The <br /> now <br /> Qf wide <br /> about 45 degrees, <br /> ft <br /> - -_-_ _ -�------- ---__ 1 umo_ was about 4 f t thick,, <br /> excavated -eontaml net on-_p ------_- ---__ - --___-- <br /> and � least ?4 <br /> at #t i n 1 Qn9th• - - <br />