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1 <br /> 110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br />' McCAWBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> hal/www.mccamR¢e]]com E-mail main@mccampbell corn <br />' Advanced GeoEnvironmental Client Project ID West Clay Properties Date Sampled 10106-10/08/99 <br /> 4005 North Wilson Way Date Received 10/13/99 <br /> 1 Stockton, CA 95205 Client Contact Kevin McKibben Date Extracted 10113-10/19/99 <br />' Client P O Date Analyzed 10/13-10/19/99 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasohne*,with Methyl tert-Butyl Ether* & BTEX* <br /> EPA methods 5030,tmdtfted 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 /> 23282 B 11-70' S 7 6,a ND 041 0 099 020 046 102 <br />' 23283 B11-90' S ND ND 0 009 0 019 0 012 0 052 100 <br />' 23284 B11-95' S ND ND ND ND ND ND 100 <br /> 23285 B12-45' S 2 8,a ND 0 068 0 026 0 13 019 112 <br /> 23286 B12-55' S ND ND 0 020 0 005 0 060 0 036 101 <br /> 23287 B12-80' S ND ND ND ND ND ND 99 <br />'ie 23288 B13-30' S ND ND ND ND ND ND 100 <br /> 23289 B 13-40' S ND ND ND ND ND ND 97 <br /> I <br /> Reporting Limit unless <br /> W SOug/L 50 OS OS OS OS <br /> otherwise stated,ND <br />' means not detected above <br /> the reporting limit mg/kg S 1 0 m /k 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 /> • <br /> gasoline") c) lighter gasoline range compounds (the most mobile fraction) are significant, d) gasoline range compounds having broad 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 s,gmficant,h)lighter than water immiscible <br /> sheen is present,i)bgwd sample that contains greater than�5 vol %sediment,f)no recognizable pattern <br /> DHS Certification No 1644 ` LEdward Hamilton, Lab Director <br />