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1 110 2nd Avenue South #137,Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc I Telephone 925-798-1620 Fax 925-798-1622 <br />' h J/www niccanipbell com E-mail rnain@incranipbell cam <br /> Advanced GeoEnvlronmental, Inc Client Project ID West Clay Properties Date Sampled 03/14/03 <br />' 837 Shaw Road Date Received 03/18/03 <br /> Stockton, CA 95215 Client Contact Paul Dotson Date Extracted 03/20/03-03/21/03 <br />' CIient P Q Date Analyzed 03/20/03-03/21/03 <br /> Gasoline Range(C&C12) Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> Extraction method SW5030B Analytical methods SW8021B/8015Cm Work Order 0303275 <br />' Lab ID Client ID Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> 001A MW1 W 8600,a 1300 60 700 310 10 118 <br />' 002A MW2 W 21 000,a — 950 300 1300 2200 10 993 <br /> 003A MW3 W ND _ ND ND ND ND 1 991 <br />' 004A MW4 W ND,i — ND ND ND ND 1 98 7 <br /> 005A MW5 W ND — ND ND ND ND 1 965 <br />' 006A MW6A W ND — ND ND ND ND 1 103 <br /> 007A MW6B W ND ND ND ND ND 1 997 <br />' 008A MW7 W ND _ _ ND ND ND ND 1 998 <br /> 009A MW8A W ND ND ND ND ND 1 989 <br /> lie OIOA MW8B W ND _ ND ND ND ND 1 979 <br /> 011A MW9 W ND ND ND ND ND 1 963 <br />' 012A MW 10 W 2700,a,h 59 18 210 35 10 117 <br /> 013A MW l IA W ND w ND ND ND ND 1 940 <br />' 014A MW11B W ND,a ND 12 ND 23 1 916 <br /> 015A MW 12A W ND ND ND ND ND 1 962 <br />' 016A MW12B W ND ND ND ND ND 1 939 <br /> Reporting Lumt for DF=1 W 50 50 05 05 05 05 1 /L <br /> ND means not detected at or µg <br />' above the reporting]mot S NA NA NA NA I NA NA 1 rn9/K9 <br /> *water and vapor samples are reported in lig/L,soil and sludge samples in mg/kg,wipe samples in jig/wipe,and TCLP extracts inµg/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 as not responsible for their interpretation a) <br /> unmodified or weakly modified gasoline is significant,b)heavier gasoline range compounds are signiticant(aged gasolme7),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 gasoline7,e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent/mineral spintp),0 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,t)liquid <br /> sample that contains greater than—2 vol %sediment,2)reporting limit raised due to high MTBE content,k)TPH pattern that does not appear to be <br /> denved from gasoline(aviation gas) m)no recognizable pattern <br /> DHS Certification No 1644 Angela Rydelius, Lab Manager <br />