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110 2nd Avenue South {ID7 Pacheco CA 94553 5560 <br /> McCamrbell Analytical Inc Telephone 925-798 1620 Fax 925 798-1622 <br /> ]rttp Ilwww mccampbell cam E mail maui@mccampbell corn <br /> Advanced GeoEnvironmental, Inc Client Project ID Stockton Fire Station Date Sampled 07/17/02 <br /> 837 Shaw Road Date Received 07/18/02 <br /> IClient Contact Bill Little Date Extracted 07/20/02 <br /> Stockton,CA 95215 <br /> Client P O Date Analyzed 07/20/02 <br /> Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> xtraction method SW5030B Analytical methods SW8021B/8015Cm Work Order 0207240 <br />' Lab ID Client ID Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> 001A i Influent A ND ND ND ND ND ND 0 5 101 <br /> i <br /> i <br /> I <br /> Reporting Limit for DF=1, A 50 5 0 0 5 0 5 i 0 5 0 5 i ug/L <br /> ND means not detected at orS 1 0 005 0 005 0 005 0 005 0 005 mg/kg <br />' above the reporting limit I I <br /> 'water and vapor samples are reported in ug/L,soil and sludge samples in mg/kg,wipe samples in uglwtpc,and TCLP extracts 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 fol 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 gasohne9,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)sti ongly aged gasoline or diesel range compounds are significant,h)lighter than water tmmrscible sheen/product is present Q liquid sample that <br /> contains greater than—2 vol %sediment,j)sample diluted due to high MTBE content k)TPH pattern that does not appear to be denved from <br />' gasoline(aviation gas) m)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton, Lab Director ' <br /> 1 <br /> 1 <br />