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n <br />*' 110 2nd Avenue South,#D7,Pacheco CA 94553 5560 <br /> Inc.McCampbell Analytical, Telephone 925 798-1620 Fax 925-798-1622 <br /> A#— I Website www mccampbell com E-mail mam@mccampbell coin <br /> . Advanced GeoEnvlronmental, Inc Client Project ID West Clay-Ozone BST Date Sampled 04/01/05-04/05/05 <br /> 837 Shaw Road Date Received 04/05/05 <br /> Client Contact Bill Little Date Extracted 04/05/05-04113/05 <br /> Stockton, CA 95215 <br /> Client P O Date Analyzed 04/07/05-04113/05 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> Extraction method SW5030B Analytical methods SW8021B/8015Cm Work Order 0504049 <br /> Lab ID Client 1D Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> OOIA Soil Initial S 340,b ND<10 ND<l0 ND<10 42 12 200 99 <br /> 002A Water Initial W 100,m 92 ND 4 4 ND ND 1 113 <br /> 007A Water Final W 2800 a ND<25 3 0 3 0 100 300 1 107 <br /> 008A Soil Final S 33,g,m ND ND 0 091 0 13 049 l 90 <br /> Reporting Lmvt for DF=1 W 50 5 0 05 0 5 0 5 0 5 <br /> ND means not detected at or <br /> above the reporting limit S 1 0 0 05 0 005 0 005 0 005 0 005 1 mg/Kg <br /> *water and vapor samples and all TCLP&SPLP extracts are reported in pg/L soil/sludge/sobd samples in mg/kg, wipe samples in pg/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/mineral spint9),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 firm 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 � �Angela Rydelius,Lab Manager <br />