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110 2nd Avenue South #D7 Pacheco CA 94553-5560 <br /> A4McCampbell Analytical, Inc. Telephone 925-798-1620 Fax 925-798 1622 <br />' Website www mccanipbell com )email m in@rnecampbell corn <br /> Advanced GeoEnvzronrrlental, Inc Client Project ID Three B's Date Sampled 12/28/04 <br />' 837 Shaw Road Date Received 12/29/04 <br /> Stockton, CA 95215 Client Contact Tun Cuellar Date Extracted 12/30/04-12/31/04 <br />' [Client P O Date Analyzed 12/30/04-12/31/04 <br /> Gasoline Range(C&C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br />' Extraction method SW503013 Analytical methods SW8021B/8015Cm Work Order 0412541 <br /> Lab ID Client ID Matrix TPH(g) MTBE Benzene Toluene 1✓thylbenzene Xylenes DFT%5S <br /> 017A MW11E W ND -- ND ND ND ND 1 108 <br />' 018A MWllF W ND --- ND ND ND ND 1 114 <br /> 019A MW12A W ND ND ND ND ND 1 109 <br /> r020A MW1213 W ND --- ND ND ND ND 1 105 <br /> 021A MW12C W ND --- ND ND ND ND 1 110 <br /> i022A MW 12D W ND --- ND ND ND ND 1 98 <br /> 023A MW12E W ND --- ND ND ND ND 1 106 <br />' 024A M W 12F W ND --- ND ND ND ND 1 108 <br /> Reporting Limit for DF=1 W 50 5 0 05 05 05 05 1 µg/L <br /> ND means not detected at or <br /> above the reporting limit S NA NA NA NA NA NA 1 mg/Kg <br /> water and vapor samples and all TC,P&SPLP extracts are reported in ug/L,soil/sludge/solid samples in mg/kg, wipe samples in pg/wipe, <br /> productloil/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/mineral spirit?),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—1 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 gas) m)no recognizable pattern,n)TPH(g)range non-target isolated peaks subtracted out of the TPH(g)concentration at <br /> the client's request <br /> DHS Certification No 1644 J_ <br /> Angela Rydeltus, Lab Manager <br />