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i <br /> 819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento,CA 95834 I <br /> (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> IT Corporation-Sacramento Project: Parkinson ARCO ._ Sampled: 1/7/00 <br /> 1433 N.Market Blvd.,Ste. 1 Project Number: N/A Received: 1/10/00 <br /> Sacramento.CA 95834 Project Manager: Kathleen Waldo 1i - Reported: 1/11,24/00 <br /> .Total Purgeable Hydrocarbons(C6-C12)and BTEX by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC ! Reporting Limit Recov.' RPD RPD <br /> Analyte Analyzed Level Result Result J Units Recov.Limits % Limit % Notes* <br /> LCS(continued) 0010109-BS1 <br /> Ethylbenzene 1/11/00 0.200 0.192 ..mg/kg 70.0-130 96.0 <br /> Xylenes(total) 0.600 0.536 70.0-130 89.3 <br /> Surrogate: a,a,a-Tris luorotoluene 0.200 0.197 60.0-140 98.5 <br /> Matrix Spike 0010109-MSI ' S001075-03 <br /> Benzene 1/11/00 0.200 ND 0.173 mg/kg 60.0-140 86.5 <br /> Toluene 0.200 ND 0.177 60.0-140 88.5 <br /> Ethylbenzene 0.200 ND 0.176 - 60.0-140 88.0 <br /> Xylenes(total)_ 0.600 ND 0.501 60.0-140 83.5 _ <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0.188 60.0-140 94.0 <br /> Matrix Spike Dup 0010109-MS61 500107.5-03 <br /> Benzene 1/11/00 0.200 ND 0.171 mg/kg 60.0-140 85.5 25.0 1.16 <br /> Toluene 0.200 ND 0.168 60.0-140 84.0 25.0 5.22 <br /> Ethylbenzene 0.200 ND 0.196 60.0-140 98.0 25.0 10.8 <br /> Xylenes(total) _ 0.600 ND 0.498 60.0-140 83.0 25.0 0.601 <br /> Surrogate: a,a,a-Tris luorotoluene 0.200 0.188 60.0-140 94.0 <br /> Batch: 0010121 Date Prepared: 1/12/00' Extraction Method: EPA 5030B(MeOH) <br /> Blank 0010121-BLKI <br /> Purgeabie Hydrocarbons 1/12/00 ND mg/kg 1.00 <br /> Benzene ND 0.00500 <br /> Toluene ND 0.00500 ' <br /> Ethylbenzene ND 0.00500 <br /> Xylenes(total) ND 0.00500 <br /> Surrogate: a,a,a-Tris luorotoluene 0.200 0.182 60.0-140 91.0 <br /> LCS 0010121-BSI <br /> Benzene 1/12/00 0.200 0.196 mg/kg 70.0-130 98.0 <br /> Toluene0.200 0.203 70.0-130 : 101. <br /> Ethylbenzene 0.200 0.202 70.0-130 101 <br /> Xylenes(total) 0.600 0.563 70.0-130 93.8 <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0.189 60.0-140 94.5 <br /> Matrix Spike 0010121-MSI S001069-06 <br /> Benzene 1/12/00 0.200 ND 0.175 mg/kg 60.0-140 87.5 <br /> Toluene 0.200 ND 0.178 60.0-140 89.0 <br /> Ethylbenzene 0.200 ND 0.178 60.0-140 89.0 <br /> Xylenes(total) 0.600 ND 0.501 60.0-140 83.5 <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0.196 60.0-140 98.0 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> Page 14 of 20 <br />