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110 Second Avenue South,##D7,Pacheco,CA 94553-5560 <br /> MCCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> Ihttp Hwww mccamnbell corn E-mail main@mccampbell corn <br /> Advanced GeoEnvironmental Client Project ID Curtiss Date Sampled 09/28/98 <br /> 4005 North Wilson Way Date Received 09/30/98 <br /> Stockton, CA 95205 Client Contact Bill Little Date Extracted 10/02-10/06/98 <br /> Client P O Date Analyzed 10/02-10/06/98 <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 GCF1D(5030) <br /> I Lab 1D Client 1D Matrix TPH(g)' MTBE Benzene Toluene Ethylben Xylenes %Recovery <br /> zene Surrogate <br /> 96081 MW I A W 220,a - - 15 3 7 45 1 7 92 <br /> 96082 MW1B W 2000,a --- 530 260 55 130 90 <br /> 96083 MW2A W ND --- ND ND ND ND 91 <br /> 96084 MW2B W ND,i ND ND ND ND 106 <br />' 96085 MW3 W ND ND ND ND ND 95 <br /> 96086 MW5 W ND ND ND ND ND 96 <br />' 96087 MW6 W ND,i ND ND ND ND 91 <br /> Reporting Limit unless W 50 ug/L 5 0 05 05 05 05 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporting limit S 1 0 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 mg/kg,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) hca%ier 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 gasohnO,e)TPH pattern that does not appear to be derived from gasoline(9),Q <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 />