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i <br /> 110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> I24 h //www mccampbell com E-mail main mccampbell com <br /> Advanced GeoEnvironmental Client Project ID Comfort Air Date Sampled 05/15-05/16/01 <br /> 837 Shaw Road Date Received 05/17/01 <br /> IStockton, CA 95215 Client Contact Paul Dotson Date Extracted 05117-05/18/01 <br /> Client P O Date Analyzed 05/17-05/18101 <br /> IGasoline Range(C6-C32)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 Ethyl Xylenes %Recovery <br /> benzene Surrogate <br /> 67663 DM 011 W 100,000,a ND<100 7900 22,000 2500 11,000 98 <br />' 67664 051 2 W 100,a ND 2 7 3 8 13 3 2 110 <br /> 67665 MW3W 310,a ND 37 18 15 20 112 <br /> 051501 <br />' 67666 0MW4 W 57,a ND ND 12 ND ND 102 <br /> 67667 0MW5 W ND ND ND ND ND ND 102 <br /> 51501 <br /> 67668 MW6 W 8000,a ND<20 220 140 240 230 --- <br /> 051501 <br /> 67669 MW7 W 93,b,f ND ND ND ND ND 107 <br /> 051501 <br /> 67670 MW8W 74,f ND ND ND ND ND 107 <br /> 051501 <br /> Reporting Limit unless W 50 ug/L 50 0 5 0 5 0 5 0 5 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporting limit S 10 mg/kg 0 OS 0 005 0 005 0 005 0 005 <br /> "water and vapor samples are reported:n ug/L.,wipe samples in ug/wipe,soil and sludge samples:n mg/kg,and all TCLP and SDLP extracts <br /> in ug/L <br /> n Lluttered chromatogram,sample peak coelutes with surrogate peak <br /> `The following descriptions of the TPH chromatogtam are cursory in nature and McCampbell Analytical is not responsible tar their <br /> interpretation a) unmodified or weakly modified gasoline is significant, b) heavier gasoline range compounds are sign if:cant(aged <br />' gasohne9), c) lighter gasoline range compounds (the most mobile fraction) are sign:ficant, 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(9),1) <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 ))no recognizable pattern <br />' DHS Certification No 1644 Edward Hamilton, Lab Director <br />