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819 Striker Avenue,Suite 8 <br /> fl) Sequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical <br /> r�lyt c r�l FAX(916)927-0100 <br /> ,(�'� (rL 1 [.R www.secluolalabs.com <br /> Delta Environmental Consultants(Cameron Park) Projeor. ARCO 5469, Stockton, CA <br /> 3330 Cameron Park Dr. Ste 550 Project Number: NIA Reported: <br /> Cameron Park CA,95682 Project Manager: Jay Johnson 10/01/01 15:20 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %RFC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1090154-EPA 5030B (P/T) <br /> Blank(1090154-BLKI) _ Prepared&Analyzed:09/16/01 <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 0.50 " <br /> Toluene ND 0.50 " <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 " <br /> Surrogate:a,a,a-Triuorotoluene 12.0 10.0 120 60-140 <br /> LCS(1090154-BSi)_ ��--_ Prepared&Analyzed:09/16/01 <br /> Benzene 11,9 0.50 ugll 10.0 119 70-I30 <br /> Toluene 10.8 0:50 10.0 108 70-130 <br /> Ethylbenzene 11.0 0.50 10.0 110 70-130 <br /> nes(total) 31.7 0.50 30.0 106 70-130 <br /> gale:a,a,a-Trifluorololuene 11.8 " 10.0 118 60-140 <br /> Matrix Spike(1090154=MSi) _ _ _ Source: S109223-07 Prepared&Analyzed:09/16/41 <br /> Benzene w 11.4 0.50 ug/I 10.0 ND 114 60-140 <br /> Toluene 10.4 0.50 10.0 ND 104 60-140 <br /> Ethylbenzene 10.5 0.50 10.0 ND 105 60-140 <br /> Xylenes(rota[) __ - 30.3 0.50 30.0 ND 101 60-140 <br /> Surrogate:a,a,a-Tris luorotoluene 11.5 10.0 115 60-140 <br /> Matrix Spike Dup(1090154-MSD1)_ Source: 5109223-07 Prepared&Analyzed.09/16/01 <br /> Benzene 12.5 0.50 ug/l 10.0 ND 125 60-140 9.21 25 <br /> Toluene 11.2 0.50 10.0 ND 112 60-140 7.41 25 <br /> Ethylbenzene 11.3 0.50 10.0 ND 113 60-140 7.34 25 <br /> Xylenes(total) _ 32.3 0.50 30.0 ND 108 60-140 <br /> 6.39 25 <br /> Surrogate:a,a,a-Triuorotoluene 12.3 10.0 123 60-140 <br /> �uoia Analytical -Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety. <br /> Page 1! of 13 <br />