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L <br /> 110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. <br /> I Tele.-510-798-1620 Fax-510-798-1622 <br /> Advanced GeoEnvironmental,Inc. Client Project ID: Arco Mini Mart-4511 Date Sampled:04/09/97 <br /> 1803 West March Lane,Suite A Pacific <br /> Date Received: 04/10/97 <br /> Stockton;CA 95207 Client Contact:Bill Little Date Extracted: 04/I0-04114197 <br /> 5 L f <br /> Client P.O: Date Analyzed:04110-04/14197 <br /> Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasoline*,with Methyl tert-Butyl Ether*&BTEX* <br /> 1 L EPA methods 5030 modified 8015 and 8020 or 602;California RW CB SF Bay Region)method GCFID(5030 <br /> + Ethylben- % Rec. <br /> Lab ID Client ID Matrix TPH(g) MTBE Benzene Toluene Xylenes <br /> 1 zene Surrogate <br /> 75411 1\4W4/4-9-97 W 8100,a 95 380 140 180 640 105 <br /> 75412 MW5/4-9-97 Wi 11 5100,a 930 410 89 100 350 103 <br /> 75413 MW6/4-9-97 W; 110,000,a 5800 8200 22,000 3500 18,000 102 <br /> 75414 MW7/4-9-97 W 240,b,d 1500 0.68 ND ND 11 103 <br /> 75415 V W 114-9-97 W,; 130,000,a,h 1600 2800 18,000 4300 23,000 103 <br /> { <br /> i <br /> 1 <br /> i <br /> l <br /> Reporting Limit unless W; 50 ug/L 5.0 0.5 0.5 0.5 0.5 <br /> otherwise stated;ND <br /> means not detected <br /> above the reporting limit S '. 1.0 mg/kg 0.05 0.005 0.005 0.005 0.005 <br /> *water and vapor samples are reported in ug/L,soil and sludge samples in mg/kg,and all TCLP extracts in mg/L <br /> w #cluttered chromatogram;sample peak coelutes with surrogate peak <br /> + The following descriptions of le TPH chromatogram are cursoryy in nature and McCampbell Analytical is not <br /> ' responsible for their interpretation:a)unmodified or ueaklymodified gasoline is siWnificant;b)heavier gasoline <br /> j range compounds are significant(aged gasoline?);c)lighter gasoline range compounds(the most mobile f action) <br /> �i <br /> are siWnificant; d) asoIme range compounds having broadchromatographic peaks are significant;biologically <br /> alteredd gasoline?; eg) TPH pattern thaf does not appear to be derived tiom gasoline (?);f) one to a few isolated <br /> peaks present;g)strong/gaged gasoline or diesel range compounds are significant;h)lighter than water immiscible <br /> x !, sheen xs present;i) liquid sample,that contains greater than 5 vol.% sediment;j)no recognizable pattern. <br /> IiI <br /> DHS Certification No. 1644 //�. Edward Hamilton,Lab Director <br />