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1]0 2nd Avenue Sonth,!!D7 Pacheco CA 94553 5560 <br /> MCCalnpbeli Analytical Inc Telephone 925-798-1620 Fax 925-798-1622 <br /> h llwww ince bell com E-marl mom mcca bell com <br /> Shaw Environmental Client Project ID #838819/8000, SBC, Date Sampled 10/27/03 <br /> Tracy Ground Water Sampling <br /> 4005 Port Chicago Hwy Date Received 10/28/03 <br /> Concord, CA 94520 Client Contact Rob Delnagro Date Extracted 10/28/03-10129/03 <br /> Client P O Date Analyzed 10/28/03-10/29/03 <br /> Gasoline Range(C5-C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> Eatracnonmeffiod swsmB Analytical methods SW8021B/8015Cm Work Order 0310444 <br /> Loh ID Client fD Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> 001A MW-1 W --- ND ND ND ND t 113 <br /> 002A MW-2 W --- ND ND ND ND 1 103 <br /> 003A MW-3 W --- ND ND ND ND 1 103 <br /> 1 <br /> Reporting Limit for DF=l W 50 5 0 0 5 0 5 05 0 5 1 <br /> ND means not detected at or µ� <br /> above the reporting limit S NA NA NA NA NA NA 1 mg/Kg <br /> *water and vapor samples and all TCLP&SPLP extracts are reported in ug/L,soil/sludge/solid samples in mg/kg wipe samples inµg/wipe <br /> product/oil/non-aqueous liquid samples in mg/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 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 gasoline?,e)TPH pattern that does not appear to be derived from gasoline(Stoddard solvent I mineral spirit9),f)one to a few isolated non-target <br /> peaks present,g)strongly aged gasoline or diesel range compounds are significant,h)lighter than water immiscible sheen/product is present,i)liquid <br /> sample that contains greater than—2 vol %sediment,j)reporting limit raised due to high MTBE content,k)TPH pattern that does not appear to be <br /> ,derived from gasoline aviation as m no recognizable Rattem <br /> DHS Certification No 1644 ngela Rydelins, Lab Manager <br />