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110 2nd Aveuue South #D7 Pacheco CA 94553 5560 <br /> E:: <br /> McCampbell Analytical Inc Telephone 925-798-1620 Fax 925-798 1622 <br /> hnp Ilwww mccampbell com E-mail main@niccanipbell com <br /> Env Science Associates Client Project ID #200252,VOP Date Sampled 05/02/02 <br /> 225 Bush Street, Ste 1700 Date Received 05/02/02 <br /> San Francisco, CA 94104 Client Contact Peter Hudson Date Extracted 05/04/02 <br /> Client P O Date Analyzed 05/04/02 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> xtraction method SW5030B Aualyncal methods SW8021B18015Cni Work Order 0205038 <br /> Lab ID Client ID Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> OO]A MW-1 W ND ND ND ND ND ND - 1 106 <br /> 002A MW-2 i W ND I ND ND ND I ND ND 1 105 <br /> 003A ! MW-3 W ND ND ND ND ND ND 1 104 <br /> 004A p MW-4 W I ND ND ND ND I ND ND 1 1 104 <br /> E I ! <br /> � I <br /> I I <br /> ' I <br /> � I I <br /> Reporting Limit for DF 1, W I 50 5 0 0 5 0 5 0 5 05 ug(l <br /> ND means not detected at or S 1 0 0 05 0 005 I 0 005 0 005 0 005 m /K <br /> above the reporting limit I mg/Kg <br /> i <br /> *water and vapor samples are repotted in uglL,soil and sludge samples in mg/kg,wipe samples in ug/wipe,and TCLP extracts in ug/L. <br /> DF=dilution factor <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 interpretation a).- <br /> unmodified <br /> )—unmodified or weakly modified gasoline is significant,b)heavier gasoline range compounds are significant(aged gasoline?),c)lighter gasoline range <br /> compounds(the most mobile fraction)are significant,d)gasoline range compounds having broad chromatographic peaks are significant,biologically <br /> altered gasoline?,e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent),f)one to a few isolated non-target peaks present, <br /> g)strongly aged gasoline or diesel range compounds are significant,h)lighter than water immiscible sheen/product is present,i)liquid sample that <br /> contains greater than--2 vol %sediment,j)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />