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McCampbeZl Analytical Inc 110 2nd Avenue South #D7 Pacheco CA WM 5560 <br /> Telephone 925-798 1620 Fax 925 798 1622 <br /> http!lwww mccampbell corn Email mom@mccampbell corn <br /> Shaw Environmental Client Project ID #78172163070000, Date Sampled 07/01/02 <br /> STHL#17647 Manteca <br /> 4005 Port Chicago Hwy Date Received 07/10/02 <br /> Concord,CA 94520 Client Contact Shelby Lathrop I Date Extracted 07/12102-07113/02 <br /> ' Client P O Date Analyzed 07112102-07113/02 <br /> Gasoline Range(C6-02)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> xtracuon method SW5030B Analytical methods SW8021B/8015Cm Work Order 0207116 <br /> Lab ID Client ID Matnx TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> 001A MW-3 W ND,i ND ND ND ND 0 57 1 107 <br /> 002A MW-2 W ND,i ND ND ND ND 0 53 1 1 114 <br /> 003A MW-1 W ND,i ND ND ND ND ND 1 109 <br /> 1 <br /> Reporting Limit for DF=1, W 50 5 0 0 5 05 0 5 0 5 ug/L <br /> ND means not detected at or <br /> above the reporting limit S 10 005 0 005 0 005 0 005 0 005 mg/Kg <br /> *water and vapor samples are reported in ug/L,soil and sludge samples in mg/kg,wipe samples in ug/wipe,and TCLP extracts in uglL <br /> #cluttered chromatogram,sample peak coelutes with surrogate peak <br /> +The following descnptions 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 sigmficant(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), 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,1)sample diluted due to high MTBE content k)TPH pattern that does not appear to be derived from <br /> ' gasoline(aviation gas) m)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamil <br /> ton, Lab Director <br /> 1 <br />