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110 2nd Avenue South, #D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> h2p//www mccamnbell cam E-mail matn@mccampbell cam <br /> Advanced GeoEnvironmental Client Project ID Pacific Mini Mart— Date Sampled 02/11/2002 <br /> � <br /> 837 Shaw Road GW EXE Date Received 02/12/2002 <br />' Stockton, CA 9521.5 Client Contact Bill Little Date Extracted 02/12-02/13/2002 <br />' Client P O Date Analyzed 02/12-02/1312002 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasohne*,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 BenzeneToluene Ethyl Xylenes %Recovery <br /> benzene Surrogate <br /> 90160 Influent W 8400,a 660 490 110 350 1300 106 <br /> 90161 Effluent W ND ND ND ND ND ND 98 <br /> 90-162 Mid T W ND ND ND ND ND ND 100 <br /> Reporting Limit unless W 50 ug/L 5 0 05 05 0 5 05 <br /> otherwise stated,ND <br /> means not detected above <br /> 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,wipe samples in ug/wipe,soil and sludge samples in mg/kg,and all TCLP and SPLP extracts <br /> in ug/L <br /> Ix cluttered chromatogram,sample peak coelutes with surrogate peak <br /> `The following descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not responsible for their <br /> interpretation a) unmodified or weakl) modified gasoline is significant, b) heavier gasoline 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 gasolme?,e)TPH pattern that does not appear to be derived from gasoline(9),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 /> I <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />