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110 2nd Avenue South,#137,Pacheco,CA 94553-5560 <br />' McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> http//wwwmccampbellcom E-mail math@mccampbell com <br />' Advanced GeoEnvironmental Client Project ID Arco Mini Mart Date Sampled 06/07/00-06/09/00 <br /> 4005 North Wilson Way Date Received 06/13/00 <br />' Stockton,CA 95205 Client Contact William Little Date Extracted 06/13/00 <br /> Client P O Date Analyzed 06/16/00 <br /> 7 Oxygenated Volatile Organics By GC/MS <br /> EFA method 8260 modified <br /> Lab ID 40173 40174 40175 40I76 <br />' Reporting Limit <br /> Chent ID MWIO-30 MWIO-40 MW11-30 MWII-40 <br /> Matrix S S S S S W <br /> Compound Concentration* ug/kg u L <br />' Di-isopropyl Ether(RIPE) ND ND ND ND 50 10 <br /> Ethyl tert-Butyl Ether(ETRE) ND ND ND ND 50 10 <br /> Methyl-tert Butyl Ether(MTBE) ND ND 21 99 so 10 <br /> tert-Amyl Methyl Ether(TAME) ND ND ND ND 50 10 <br /> • tert-Butanol ND ND ND ND 25 50 <br /> Methanol ND ND ND ND 1000 200 <br /> Ethanol ND ND ND ND 250 50 <br /> Surrogate Recoveries(%) <br /> Dibromotluoromethane 126 127 130 132 <br /> Comments <br /> *water samples are reported in ug/L,sod and sludge samples in ug/kg,wipes in ug/wipe and all TCLP I STLC I SPLP extracts in ug/L <br /> ND means not detected above the reporting limit,N/A means surrogate not applicable to this analysis <br /> (h)lighter than water immiscible sheen is present,(i)liquid sample that contains greater than—5 vol %sediment,0)sample diluted due to <br /> high organic content <br /> DHS Certification No 1644 Edward Hamilton, Lab Director <br /> f <br />