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Ii 110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> htW://www mccampbell corp E-mail main@mccampbell coin <br /> Advanced GeoEnvironmental Client Protect ID Arco Date Sampled 03/22/99 <br /> 4005 North Wilson Way Date Received 03/23/99 <br /> Stockton, CA 95205 Client Contact Bill Little Date Extracted 03124-03/26/99 <br /> Client P O Date Analyzed 03/24-03/2699 <br /> Gasoline Range(C&C12)Volatile Hydrocarbons as Gasoline*,with Methyl tert-Butyl Ether*&BTEX* <br /> EPA methods 5030,modified 8015 and 8020 or 602 California RWQCB(SF Bay Region)method GCFID(5030) <br /> Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 05622 MWI/-22- W ND ND ND 14 092 42 95 <br /> 99 <br /> 05623 MWg2//3-22 W ND 60 ND 1 0 066 29 99 <br /> 05624 MW99 -22 W ND 31 063 1 4 087 40 98 <br /> 05625 MW99/3-22 W 340,a 33 14 11 28 23 ---" <br /> 05626 MW9/93-22- W 2500,a 2500 130 26 150 250 107 <br /> I05627 MW66/93-22 W 1300,a 390 190 32 26 42 112 <br /> 05628 M W7/-22 W ND 34 073 1 8 1 1 52 101 <br /> 99 <br /> 05629 VW 991/3 W 23,000,a 720 670 3000 1100 5100 103 <br /> I <br /> I <br /> Reporting Limit unless W 50 ug/L 50 05 05 05 05 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporting limit m S 1 0 /k 005 0 005 0 005 0 005 0 005 <br /> mg/kg <br /> waLci anU vapor bampies are mporiea in ugii.,wipe samples in uglwipe,soil and sludge samples to mg/kg,and all 1(-LF and SDLP extracts <br /> in ug/L <br /> "cluttered chromatogram,sample peak coelutes with surrogate peak <br /> `The following descnpnons of the TPH chromatogram are cursory in nature and McCampbell Analytical is not responsible for their <br /> inteipretatior a) un-nodified or %%cakl) modified gasolinc is significant, b) heavier gasolinc range compounds are significant(aged <br /> gasoline)), c) lighter gasoline range compounds (the most mobile fraction) are significant, d) gasoline range compounds having broad <br /> chromatographic peaks are significant,biologically altered gasoline),e)TPH pattern that does not appear to be derived from gasoline(?),f) <br /> one to a few isolated peaks present,g)strongly aged gasoline or diesel range compounds are significant, h)lighter than water immiscible <br /> sheen is present,i)liquid sample that contains greater than—5 vol %sediment,j)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />