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114 2nd Avenue South, #D7,Pacheco,CA 94553 <br /> MCCAMPBELL ANALYTICAL INC. Tele:510-798-1620 Fax: 510-798-1622 <br /> Advanced GeoEnvironmental,Inc. Client Project ID: Geweke Date Sampled:03/18/97 <br /> 1803 West March Lane, Suite A Date Received:03/20/97 <br /> Stockton,CA 95207 Client Contact: Kevin McKibben Date Extracted: 03121-03125197 <br /> Client P.O: Date Analyzed:03/21-03/25/97 <br /> Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasoline*,with Methyl tert-Butyl Ether*&BTEX* <br /> EPA methods 5030 modified 8015 and 8020 or 602;California RW CB SF Bay Re ion method GCFID 5030 <br /> Lab ID Client ID Matrix TPH(g)' MTBE Benzene Toluene Ethylben- XyIenes % Rec. <br /> zene Surrogate <br /> 74562 MW-6 W ND --- ND ND ND ND 102 <br /> 74563 MW-7 W ND --- ND ND ND ND 105 <br /> 74564 MW-8 W 580,b,c --- 2.9 ND 21 65 104 <br /> 74565 MW-9 W 290,b,c ND 0.71 ND 9.3 16 104 <br /> 74566 MW-10 W ND --- ND ND ND ND 99 <br /> 74567 MW-11 W ND --- ND ND ND ND 102 <br /> 74568 MW-12 W ND ND ND ND ND ND 102 <br /> 74569 MW-13 W ND --- ND ND ND ND 103 <br /> 74570 MW-14 W 1100,b,c ND 9.5 9.2 0.54 200 102 <br /> 74571 EW-1 W ND ND ND ND ND 0.84 102 <br /> 74572 MW-1 W 2900,c,b --- 9.7 5.7 7.2 11 102 <br /> 74573 MW-2 W ND --- ND ND ND ND 102 <br /> 74574 MW-3 W ND --- ND ND ND ND 103 <br /> 74575 MW-4 W 2601c,b --- 1.5 ND 0.52 1.3 101 <br /> 74576 MW-5 W 130,c ND 1.4 ND ND ND 101 <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 /> #cluttered chromatogram; sample peak coeiutes with surrogate peak <br /> + The following descriptions of the TPH chromatogram are cursory in nature and McCarrzpbell Analytical is not <br /> responsible for their interpretation: a)unmodified or weakly modified gasoline is significant;b) heavier gasoline <br /> range compounds are signrficant(aged gasoline?);c)lighter gasoline range compounds(the most mobile fraction) <br /> are significant; d) �asoIme range compounds having broad chromato aphic peaks are significant;biological <br /> )y <br /> altered gasoline?;e) TPH pattern that does not appear to be derivedom gasoline (?);f) one to a few isolated <br /> peaks present;g)strong lyaged gasoline or diesel range compounds are significant;h)lighter than water immiscible <br /> sheen 1s present; i) liquidd sample that contains greater than 5 vol.% sediment;3) no recognizable pattern. <br /> DH S Certification No. 1644 f/ Edward Hamilton,Lab Director <br />