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By McCampbell Analytical, 925 798 4612, Aug-2-00 9 GUAM, rage aro <br /> �I <br /> McCAMPBELL 110 2nd Avenue South,#D7, Pacheco,CA 94553-5560 <br /> ANALYTICAL INC Telephone 925-798-[620 Fax 925-798-1622 ' <br /> c E-mall matnrrr mccampbeil cnm <br /> _ 0. <br /> E <br /> nvironmen <br /> tal e Associates Client Project ID #200252, Stockton <br /> Date Sampled 07[05/00 ' <br /> 1700 Date Received 07/07/00 <br /> - - -- - - -- -_ - Client Contact-peter Hudson Dake Extracted 07/07-07/204 <br /> Client P 0 Date Analyzed 07/07-07/26/00 -- <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasolene*,with Methyl tert-Butyl Ether* &BTEX* <br /> EPA methods 5030,modtfied 8015 and 8020 nr 602 Cahfomia RWQCa(SF I3ay Region)method GCFID(5030) 1, <br /> Lab M Client 10 Matrix TPH(g), MTBF- Benzene Toluene Ethylben- Xylenes %Reco,.ery <br /> Zene y Surrogate <br /> 42270 TPI-I2' S ND — ND ND ND ND ND 105 <br /> 42x71 TP1-16'— S NO �ND ND ND ND ND 102 <br /> 42272 TPI-20' S ND NO ND NO ND ND 102 ' <br /> 42273 TP 1-24' S ND ND ND NO NO NO 98 <br /> 42274 TP2-16' S ND NO ND ND NO ND 100 'l <br /> 42275 TP2-14' S NO ND NO ND NO ND 101 <br /> 42278 TF3-20' S ND ND ND NB NO N17 99 ' <br /> 42279 TP4-12' S ND ND ND ND ND NO 103 <br /> 42280 TP4-15' S NO ND NO NO ND ND 100 <br /> 42281 TP4-20 S ND NO NID ND NO NO 103 <br /> 42282 TP5-16' S ND ND ND ND NO ND 105 <br /> 42283 TP5-20' S ND ND ND NO NO NO 102 ' <br /> 42285 TP-1 W NO NO ND ND NO NO 97 <br /> 42286 TP-2 W ND NO NO ND ND ND 98 <br /> 42287 TP-3 W ND ND NO NO ND ND 9$ <br /> 42288 TP-4 W NO ND ND NO ND 98 <br /> 42289 TP-5 W NO NO ND NO NO ND 100 <br /> Reporting I imit unless W 50 ug/L so 05 05 05 0 5 <br /> otherwise stated,NU , <br /> means not detected above <br /> the reporting limit S 10 mg/kg 005 0 005 0 005 0 005 0 005 <br /> 4 *water and vapor samples art reported to ug(L,wipe samples In ug/wtpe coil and sludge samples in mg/kg and all TCI P and SPLs'extracu <br /> In ug/I_ <br /> "eluttcrcd chromatogram,sample peak aoefuees with surrogate peak <br /> 'The following descriptions of the TPH chromatogram are cursory in nature and WCampbell Analytical is not responsible for their _ <br /> - -Interpretation -a)-unmodified-or-wcakiy modified-gasoline is signiriisrnt,-b)-heavier-gasaiine range compounds arc ilgni{icant(agnd <br /> gasoline"), c) lighter gtiaolinc range compounds (the most mobile fraction) aie significant, d) gaaoline range compounds having broad <br /> chromatographic peaks arc signtricant,biologically altered gasoline? c)TPH pattem that does not appear to be derived from gasoline('r), f)- _ <br /> = one to a few isolated peaks present,g)strongly aged gasoline or diesel range compounds are significant h) lightrr than water ttnmiscihle <br /> sheen is present,i)liquid sample that contains greater than--5 vol %sediment, )no recognizable pattern ' <br /> DHS Certification No 1644 ".k _Edward Hamilton, Lab Director <br /> t <br /> `, Received Aug-02-00 09 16am From-925 798 4612 To-ENVIROMENTAL SCIENCE Page 03 <br />