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Project No S8100-06-IIA <br /> June 29, 1995 <br /> TABLE I <br /> SUMMARY OF HISTORICAL SOIL SAMPLE ANALYTICAL RESULTS <br /> CALTRANS STOCKTON YARD MAINTENANCE FACILITY <br /> STOCKTON, CALIFORNIA <br /> PAGE 2 OF 2 <br /> i <br /> DEPTH TPHg TPHd B T E X <br /> SAMPLE ID DATE (feet) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) SAMPLED BY <br /> MW-1 03/26/92 16 <1 0 <1 0 <0 005 <0 005 <0 005 <0 005 AG <br /> MW-1 03/26/92 35 <1 0 <1 0 0 25 <0 005 0 0072 0 10 AG <br /> MW-1 03/26/92 45 <1 0 <1 0 0 16 0 048 0 010 0 098 AG <br /> MW-1 03/26/92 65 <1 0 <1 0 0 054 0 0062 <0 005 0 0053 AG <br /> I <br /> MW-2 03/26/92 21 <1 0 <1 0 <0 005 <0 005 <0 005 <0 005 AG <br /> MW-2 03/26/92 36 <1 0 <1 0 0 20 <0 005 <0 005 0 043 AG <br /> MW-2 03/26/92 46 1 0 <1 0 0 31 0 025 0 012 0 16 AG <br /> MW-2 03/26/92 66 <1 0 <1 0 0 025 <0 005 <0 005 <0 005 AG <br /> MW-3 03/24/92 16 <1 0 <1 0 <0 005 <0 005 <0 005 <0 005 AG <br /> MW-3 03/24/92 31 <1 0 <1 0 <0 005 <0 005 <0 005 <0 005 AG <br /> MW-3 03/24/92 46 30 31* <0 005 0 073 0 038 1 4 AG <br /> MW-3 03/24/92 66 <1 0 <1 0 0 0053 <0 005 <0 005 <0 005 AG <br /> notes mg/kg = milligrams per kilogram <br /> TPHg = total petroleum hydrocarbon as gasoline <br /> TPHd = total petroleum hydrocarbon as diesel <br /> STEX = benzene, toluene, ethylbenzene and total xylenes <br /> < = less than the Laboratory equipment detection limits <br /> --- = not tested <br /> * = Laboratory report notation "the above samples do not appear to contain diesel" <br /> PT = Placer Tractor <br /> AG = Alton GeoScience <br />