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I110 2nd Avenue South,#137,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> http//wwwmccampbellco E-mail main@mccampbelI com <br /> IAdvanced GeoEnvironmental Client Project ID Comfort Air Date Sampled 08/08/01 <br /> 837 Shaw Road Date Received 08/09/01 <br /> Stockton,CA 95215 Client Contact Paul Dotson Date Extracted 08/09-08/13/01 <br /> Client P O Date Analyzed 08/09-08/13/01 <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 RWQCB(SF Bay Region)method CCFID(5030) <br /> I <br /> Lab ID Client ID Matrix TPH(g)+ Ethyl-MTBE Benzene Toluene Xylenes %Recovery <br /> benzene Surrogate <br /> 74408 MW1/080801 W I10,000,a ND<360 9200 20,000 2800 12,000 107 <br />' 74409 MW2/ W 350,a ND 13 80 76 12 104 <br /> 080801 <br /> 74410 MW3/ W 2000,a ND<10 190 100 81 160 104 <br /> 080801 <br /> 74411 MW4/ W ND ND ND ND ND ND 96 <br /> 080801 <br /> 74412 MW5/ W ND ND ND ND ND ND 95 <br /> 080801 <br /> 74413 MW6/ W 4300,a ND<10 300 100 180 110 102 <br /> 080801 <br /> 74414 MW7/ W 150,b ND ND ND ND ND 105 <br /> I 080801 <br /> 74415 MW8/ W 55,f ND ND ND ND ND 101 <br /> 080801 <br /> Reporting Limit unless W 50 ug/L 50 0 5 05 05 05 <br /> otherwise stated,ND <br /> means not detected above' <br /> the reporting limit S 10 mg/kg 005 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 mglkg,and all TCLP and SPLP extracts <br /> in ug/L <br />' 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 weakly modified gasoline is significant, b) heavier gasoline range compounds are significant(aged <br />' gasohne9), 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'7,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,I)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />