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I I0 Ind Avenue South, #D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> 24 http//wwwmccampbclIcom E-mail main@mccampbell com <br />' Advanced GeoEnvironmental Client Project ID West Clay Properties Date Sampled 12/18/00 <br /> 4005 North Wilson Way Date Received 12/18/00 <br />' Stockton, CA 95205 Client Contact Paul Dotson Date Extracted 12/18-12/22/00 <br />' Client P O Date Analyzed 12/18-12/22/00 <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 GCF1D(5030) <br />' Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Fthylben- X lenes %Recovery <br /> zene y Surrogate <br /> 56287 M181/12-i 8-00 W 1800,a ND<10 310 16 120 30 102 <br />' 56288 12-18-00 W 22,000,a ND<200 2300 1800 600 2500 106 <br /> F2, <br /> MW3/ W 63,a ND 3 1 69 1 I 61 103 <br />' 12-18-00 <br /> MW4/ W ND ND 084 3 1 056 29 99 <br /> 12-18-00 <br /> 56291 MW5/ W ND ND ND 1 7 071 21 99 <br />' 12-18-00 <br /> 56292 MW6A/ W ND ND ND 1 0 055 1 7 101 <br /> 12-18-00 <br />' 56293 MW60 W ND ND ND 12 ND 12 98 <br /> 12-18-00 <br /> 56294 MW7/12-18-00 W ND ND ND ND ND ND 97 <br /> 56295 12-18-0 0 N1W8A0 W 59,a ND 26 45 25 75 100 <br /> 56296 MW$B/ W ND ND ND 20 ND 20 102 <br /> 12-18-00 <br />' 56297 12-1$-00 MW- W ND 140 1 1 3 5 054 34 107 <br /> 0 <br /> 56298 MWIO/ W 860,a 33 88 12 16 19 106 <br />' 12-18-00 <br /> 56299 M W 11 A/ W ND ND ND 078 ND 1 1 106 <br /> 12-18-00 <br /> 56300 MW 11 B/ W 91,a 29 0 95 28 ND 16 107 <br />' 12-18-00 <br /> Reporting Limit unless W 50 ug/L 50 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,sot]and sludge samples in mg/kg,and all TCL?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 /> I interpretation a) unmodified or weakly modified gasoline is significant, b) heavier gasoline range compounds are signilicant(aged <br /> gasolme9), 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?,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 /> DHS Certification No 1644 Edward Hamilton, Lab Director <br />