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110 2nd A,kenue South,9D7 Pacheco CA 94553-5560 <br /> 4 1 McCampbell Analytical, Inc. Telephone 925-798 1620 Fax 925-798 1622 <br /> Wehsite www niccanipbell coni Email mu a mccampbell com <br /> Advanced GeoEnvironmental,Inc Client Protect ID Flag City Chevron Date Sampled 09/28/05 <br /> 837 Shaw Road Date Received 09/29/05 <br /> Client Contact Tim Cuellar Date Extracted 10/02/05-10/05/05 _ <br /> Stockton,CA 95215 <br /> Client P O Date Analyzed 10/02/05-10/05/05 <br /> Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasoline* <br /> Fixtracitionimthod SW5030B Analyucsl methods SW8015Cm - Work Order 0509641 <br /> Lab ID Client 1D Matnx TPH(g) DF %SS <br /> O 17A MW 12B W ND 1 102 <br /> OIRA MW12C W I ND 1 101 <br /> 019A MW12D I W ND 1 105 <br /> 020A ! MW 13A W ND— L 108 <br /> 021A MW13B W ND 1 112 <br /> 022A MW13C W ND 1 109 <br /> 023A MW13D W ND 1 104 <br /> E <br /> 024A MW14 W ND 1 E 98 <br /> 025A MW15 W ND 1 I 98 <br /> 026A MW17 W ND 1 100 <br /> 027A MW38 W ND 1 97 <br /> 028A M W 19A W ND l 98 <br /> 029A M W 19B I W ND 1 97 <br />` 030A MW20A W ND 1 1 98 <br /> 031A MW20B W ND 1 97 <br /> E � <br /> Reporting Limit for DF=1, W 50 µg/L <br /> ND means not detected at or -- - -- <br /> above the reporting limit S NA NA <br /> 'water and vapor samples and all TCLP&SPLP extracts are reported in ug/L,soil/sludge/solid samph s in mg/kg wipe samples to gg/wipe, <br /> product oil/non-aqueous liquid samples in mg/I <br /> #cluttered chromatogram,sample peak coelutes with surrogate peak <br /> +The lollowing duscnptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not responsible for their interpretation a) <br /> unmodified ar weakly modified gasoline is significant,b)heavier gasoline range compounds are signiHcant(aged gasolme"),c)lighter gasoline range <br /> compounds(the most mobile frae.tion)ars significant,d)gasoline range compounds having broad chromatographic peaks are significant,biologically <br /> altered gasoline9,e)TPH pattern that does not appeat 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 Lontams greater than--1 vol %sediment,f)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) I PI I(g)range non-target Isolated peaks subtracted out of the TPH(g)concentration at <br /> the client's request <br /> • <br /> DHS Certification No 1644 Angela Rydehus,Lab Manager <br />