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07/20/2006 16:26 91686104 SECOR • PAGE 08/11 <br /> CA <br /> sas lervi:naive <br /> Te5t1 merica Mmgnn HDII)77 .966110 <br /> 39 <br /> ANALYTICAL fESTINp COxRORAiiON PAX(4")782-4308 <br /> m�w.aemmneriuinc,epm <br /> URS Corporation[Arco]1 "act: ARCO#6100,Tracoy,CA MPG0440 <br /> 2870 Gateway Oaks Or.,Stc 300 PrRi-t Number; GOCIY4016 Reported: <br /> Sacramento CA.95833 Project Manager: Jay Johnson 07/70/06 09:10 <br /> Volatile Organic Compounds by EPA Method 8260B- Quality Control <br /> TestAmerica- Morgan Hill,CA <br /> Reporting 50ke Source 'AREC RPD <br /> Anelyle Result Limit Units level Rmutt ^/.RSC Llmae RPD Limit Nnlet <br /> Batch 6GIS006-EPA 5030B PIT/EPA 82608 <br /> Matrix Spike(6G18006-M81) Source:NIPGO439-01 Prepared&Analyzed:07/18/06 <br /> tort-Amyl mothyl other 16,15 050 ug/1 15.0 NO 111 65-135 <br /> Benzene 5.52 0.50 5.16 ND 107 70.125 <br /> tort-Butyl alcohol 165 20 143 ND 115 60-135 <br /> Di-isopropyl other 16,5 0,50 15,1 ND 109 70.130 <br /> 1,2-Dlbromoethane(EDB) 17.4 0.50 14,9 NO 117 85-125 <br /> l,2-DlchI0Taethane 17.2 0.50 14.7 NO 117 75.125 <br /> Ethanol 110 300 142 ND 77 15.150 <br /> Ethyl ten-butyl ether 17,7 0.50 15.0 ND 118 65-130 <br /> Ethylbcn=m 7.88 0.50 254 ND 105 80-130 <br /> Methyl Tort,butyl ether 8.87 0.50 7,02 041 121 50-140 <br /> Tolueuc 36,0 0,50 37.2 NO 97 70.120 <br /> Xylem(total) 46.9 0,50 d1,2 NO 114 85-125 <br /> Surragpre;1,1•Drchloroslheae•d4 6.28 " $,00 126 60-145 <br /> Sruragater 4-BeamajIucrobenaene 4.69 5,00 94 60.715 <br /> Surrogate:DibramoJlvoromethane 4.93 5.00 99 75.130 <br /> Svnogare.•Tolvene-08 5.84 5.00 117 70.130 <br /> Matrix Spike Dap(60G181106-MSDI) Snurce:MPGO439-01 Prepared&Analyzed:07118/06 <br /> tert•Amyl methyl other 16.6 0.50 ugA 1110 NO 111 65-135 0 25 <br /> Benzene 5.41 0.50 ° 5.16 NO 105 70-125 2 15 <br /> ten-Butyl alcohol 161 20 143 NO 113 60.135 2 35 <br /> Di-isopropyl other led 0.50 15,1 NO 106 70-130 3 35 <br /> 1.2•Dibromoethane(EDB) 16,6 0.50 " 14.9 NO III 85.125 5 15 <br /> 1,2-Diehloraethane 16.5 0.50 14,7 NO 112 75-125 4 10 <br /> Ethanol 135 300 ^ 142 NO 95 15-150 2D 35 <br /> Ethyl ton-butyl ether 17.0 0.50 15.0 NO 113 65.130 4 35 <br /> Ethylbcmmnc 7.97 050 7.54 NO 1D6 80-130 1 15 <br /> Mcthyl tort-butyl other 8.43 0.50 7,02 0,41 114 50-140 5 25 <br /> Toiucnc 34.9 0.50 37.2 NO 94 70.120 3 15 <br /> xylenes(total) 46,3 0.50 41.2 NO 112 85.123 1 IS <br /> Surrogore;1,2-Dich1orocrlwne-d4 S.52 5.00 110 60-145 <br /> Surrogate:4-Brom0flvorobencene 4.70 1100 94 60.115 <br /> Srrragare:Dibromopnoromerhane S.14 " $.00 101 75.130 <br /> Surrogate:Toluene-08 5.54 " 5.00 111 70-130 <br /> TestAirr iCa-Morgan 1 i11, CA 77,ere"Its In this report apply to rhr samplesanelyed in accordance with rhe chain of <br /> custody document Unless otherwise staled,ro-Wir arc"parted an a wet weight basis. <br /> This analytical repon mvsr be repro fixed in iii,emimok <br /> Page 7 of 8 <br />