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I110 2nd Avenue South,#D7, Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> htto//www mccamnbell co m E-mail matn@mccampbell com <br />' Advanced GeoEnvironmental Client Project ID Curtiss Pontiac Date Sampled 01/23/02 <br /> 837 Shaw Road Date Received 01/25/02 <br /> IStockton, CA 95215 Client Contact Brian Millman I Date Extracted 01/28-0113002 <br /> Client P 0 Date Analyzed 01/28-01130/02 <br /> IGasoline 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 GCFID(5030) <br />' <br /> Lab 1D Client 1D Matrix TPH(g)t Ethyl-MTBE Benzene Toluene Xylenes %Recovery <br /> benzene Surrogate <br /> 88957 MW3020i2 W ND ND ND ND ND ND 99 <br />' 88958 MW10B/0123 W 3400,a ND<100 920 58 83 59 --x <br /> 88959 302012 W ND ND ND ND ND ND 98 <br />' 88960 MW20B/0123 W ND ND ND ND ND ND 95 <br /> 88961 MW32 1230 W ND ND ND ND ND ND 96 <br /> I88962 MW4//2 1230 W 1400,a ND 420 83 57 21 --- <br /> 88963 MW521230 W ND ND ND ND ND ND 104 <br />' 88964 MW6/1230 W ND ND ND ND ND ND 99 <br />' 88965 MW721230 W ND ND ND ND ND ND 102 <br /> 88966 DW2450/01 W ND ND ND ND ND ND 99 <br /> 2302 <br />' Reporting Limit unless W 50 ug/L 5 0 0 5 0 5 05 05 <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 in uglL,wipe samples in ug/wipe,soil and sludge samples in mg/kg,and all TCLP and SPL?extracts <br /> in ug/L <br />' 9 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 />' gasoline'?), c) lighter gasoline range compounds (the most mobile traction) 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(?),0 <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 /> 1 <br />