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A A' <br /> WEST FORMER UST EAST <br /> FORKLIFT SHOP EXCAVATION <br /> HA-3 HA-2 HA-1 SB-1 SB-10 S8-9 S9-8 SB-7 MW-5 <br /> 0 \ / 0 <br /> \\Li I FILL CL 1T ?� CL <br /> CLAYEY `� {I SANDYL SC <br /> ML CLAYEY \I T� SC <br /> ML CLAYEY '? T <br /> _ NL T5 <br /> CL - ML - --�-'- - <br /> CL J CL_ -� T4 �� I SANDY CL <br /> SANDY CL SILTY <br /> 1 D 1800 •\ ND CL CL ID <br /> 22G- <br /> ND 240 SILTY NO <br /> I <br /> 290 CL _ _� ------ ----- <br /> SILTY „----------- -------_" <br /> SILTti CL �27D L r? `- <br /> CL r?oe - ? <br /> ---N ----8c sc 0.8 2.2 sc ND SM <br /> ND sc - <br /> Sc <br /> SC <br /> 20 ND --- SP------- Sp SC 20 <br /> APPROXIMATE 100 mg/kg Sc <br /> TPHg CONCENTRATION CN <br /> CONTOUR SO <br /> - 4.6 <br /> 30 CL 30 <br /> 10 0.7 <br /> LEGEND <br /> T5 <br /> 0 UST REMOVAL SAMPLES (APPROXIMATE LOCATIONS) <br /> SCALE IN FEET _ <br /> 40 2:7 VE ND NON DETECTABLE TPHg CONCENTRATION <br /> 40 <br /> FEET BGS 240 TPHg CONCENTRATION IN MILLIGRAMS PER KILOGRAM FEET SGS <br /> 0 <br /> ' NOTE: BASED ON RESULTS OF STOCKPILE SAMPLING (EXCELTECH, 1988) <br /> 0 20 AND SAMPLING OF THE SIDEWALLS AND 6OTTOM OF THE UST PIT <br /> 8 REFERENCES (WATERWORK, 1989), FILL MATERIAL IS NOT PRESENTLY VIEWED AS IMPACTED. <br /> HARDING LAWSON ASSOCIATES PLATE <br /> FROM WATERWORK, 1989 0039 8eciion A-A' <br /> 3 Engineering and <br /> 9' SB-1 - SB-7 - FROM RAH, 1995a _ _ _ EmRo <br /> irenmental Services Tri Valley Gro . - Plant T <br /> 335 HA-1 - HA-3 FROM RAH, 1995b :- 2fi2O0 Nowell Road <br /> ,ozea a�w�gr,am o.w+,sin. ,so <br /> - - - • (s,e)�,-mus Thornton, California <br /> SB-8 - S8-10 FROM SECOR, DRAFT 1996 DRAWN PROJECT NUMBER APFROVEO DATE REVISED DATE <br /> WG 38737.001 7/97 <br />