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110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> I24wwwmrcamoell.co E-mail main@mccampbelI coin <br /> �i <br /> Advanced GeoEnvironmental Client Project ID West Clay Properties Date Sampled 10/19-10/21/99 <br /> 4005 North Wilson Way Date Received 10/26/99 <br /> Stockton, CA 95205 Client Contact Kevin McKibben Date Extracted 10/26-10/29/99 <br /> Client P O Date Analyzed 10/26-10129/99 <br /> IGasoline Range(C6-02)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 GCFID(5030) <br />' Lab ID Client ID Matrix TPH(g)` MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 24100 B14-35 S ND ND ND ND ND ND 99 <br />' 24101 B 14-50 S 12,a ND<O 20 1 1 0 64 034 14 -- <br /> 24102 B 14-55 S ND ND 0 063 ND 0 014 0 018 97 <br />' 24103 B 15-50 S 3 9,a 0 090 071 022 017 057 --- <br /> 24104 B15-65 S ND ND 0 054 0 005 0 012 029 97 <br />' 24105 B15-75 S ND ND ND ND ND ND 105 <br /> 24106 B16-35 S ND ND ND ND 0 046 0 024 98 <br /> 24107 B 16-40 S 1 8,a ND 035 0 009 Oil 0 051 103 <br />' 24108 B 16-60 S ND ND ND ND ND ND 96 <br /> 24109 MW9-20 S ND ND ND ND ND ND 97 <br /> 24110 MW9-30 S ND ND ND ND ND ND 95 <br /> 24111 MW945 S ND ND ND ND ND ND 98 <br /> 1 <br />' Reporting Limit unless W 50 ug/L 50 05 0 5 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) heavier gasoline range compounds are significant(aged <br /> gasolmer% 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(?),f) <br /> one to a few isolated peaks present,g)strongly aged gasoline or diesel range compounds are significant,h)lighter than Nater immiscible <br />' sheen is present,i)liquid sample that contains greater than—5 vol %sediment l)no recognizable pattern <br /> DHS Certification No 1644 _Edward Hamilton, Lab Director <br />