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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 /> httpJ/www mccampbell cam E-mail mam@mccampbell com <br /> Advanced GeoEnvironmental Client Project ID Stockton Fire Station Date Sarnpled 04/16/02 <br /> •� 837 Shaw Road Date Received 04/16/02 <br /> Client Contact Bill Little Date Extracted 04/17/02-04/18102 <br /> Stockton,CA 95215 <br /> Client P O Date Analyzed 04117102-04/18/02 <br /> Gasoline Range(C&C12)Volatile Hydrocarbons as Gasoline with MTBE and BTEX* <br /> Extraction method SW5030B Analytical methods SW8021B/8015Cm Work Order 0204286 <br />' Lab ID Client ID Matrix TPH(g) MTBE BE Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> QOIA INFLUENT A 68,b ND ND ND ND 069 05 102 <br /> 002A EFFLUENT A ND ND ND ND ND ND 05 108 <br /> I <br /> 1 <br /> 1 <br /> Reporting Limit for DF=1, A 50 5 05 05 05 05 ug/L <br />' ND means not detected at or S 1 005 0 005 0 005 0 005 0 005 mg/Kg <br /> above the reporting limit <br /> *water and vapor samples are reported in ug/L,soil and sludge samples in mglkg,wipe samples in ug/wipe,and TCLP extracts in ug/L <br />' DF=dilution factor <br /> i <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 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 gasohne'�,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 /> 1 <br />