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' 110 Second Avenue South,#D7,Pacheco,CA 94553-5560 McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 ' ht1;a//wAw mccaminbelI co m E-mail mainCmccampbell com ' Advanced GeciEnvironmental Client Project ID Newfield Property, Date Sampled 10/12/98 4005 North Wilson Way Atlas Properties Date Received 10/14/98 Stockton, CA 95205 Client Contact Bob Marty Date Extracted 10/14/98 Client P O Date Analyzed 10/14-10/20/98 ' Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasoline*,Kith Methyl tert-But%1 Ether* & BTEX* EPA methods 5030,modified 8015,and 8020 or 602,California RWQCB(SF Bay Region)method GCFID(5030) ' Ethylben- %Reco,.ery zene Lab ID Client ID Matrix TPH(g)' MTBE Benzene Toluene Xylenes Surrogate 96889 P1-15 S 520,bj ND<l 6 ND<0 02 12 72 39 ---' ' 96890 P2-20 S NO NO ND NO ND NO 101 96891 P2-30 S 5 2,b NO NO 0 008 0 016 0 088 97 96892 P2-40 S 160,a ND<0 2 043 3 5 2 7 Is 100 96893 P2-50 S 390,a ND<1 2 1 1 6 6 4 3 22 - ° ' 96894 P3-20 S 1600,bd ND<0 4 ND<0 02 14 24 130 120 ' 96895 P3-30 S 77,b ND<0 2 ND<0 01 0 17 063 3 1 101 96896 P3-40 S 11,000,a ND<1 42 420 180 840 z 96897 P3-50 S 74,a ND<6 1 0 76 1 7 1 2 7 1 108 96898 P2/10-12-98 W 7600,a ND<50 3300 97 150 180 99 96899 40-12-98 W 4500,a ND<10 1500 220 46 130 101 Reporting Limit unless W 50 ug/L 5 0 0 5 0 5 0 5 0 5 othemise stated ND means not detected abot e the reporting limit S 1 0 mg/kg 0 05 0 005 0 005 0 005 0 005 ater and vapor samples are reported m ug/L,wipe samples in u.-/wipe,soil and sludge samples in mg/kg,and all TCLP and SPLP L\tracts in ug/L, 'cluttered chromatogram sample peak coelutes i%ith surrogate peak 'The folloumg descriptions of the TPH chromatogram are cursory in nature and McCampbeil Analytical is not responsible for their interpretation a) unmodified or weakly modified gasoline is significant b) bea%ier gasoline range compounds are sigiificani(aged gasoline'), c) lighter gasoline range compounds (the most mobile fraction) are significant, d) gasoline range compounds haN mg broad chromatographic peaks are significant biologically altered gasoline',e)TPH pattern that does not appear to be derived from gasoline(9) f) one to a few isolated peaks present, g)strongly aged gasoline or diesel range compounds are significant h)lighter than dater immiscible sheen is present i)liquid sample that contains greater than—5 sol %sediment j)no recognizable pattern DHS Certification No 1644 J ,/Edward Hamilton, Lab Director