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Sequoia <br />� Analytical <br />819 Striker Avenue, Suite 8 <br />Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />www.sequoialabs.com <br />Delta Environmental Consultants (Cameron Park) Project: Arco 6100, Tracy, CA <br />3330 Cameron Park Dr. Ste 550 Project Number: 6100, Tracy, CA Reported: <br />Cameron Park CA, 95682 Project Manager: Jay Johnson 02/20/02 16:47 <br />Total Purgeable Hydrocarbons and BTEX by DHS LUFT <br />Sequoia Analytical - Sacramento <br />Reporting <br />I Analy'ie Result ;..unit Units Dilution Batch Prepared Analyzed "..,.:hod Not^s <br />�I <br />L2-1-2.5 (S202153-01) Soil Sampled: 02/11/02 13:50 Received: 02/12/02 12:35 <br />Purgeable Hydrocarbons 2400 100 mg/kg 20 2020149 02/13/02 62/13/02 DHS LUFT <br />Benzene 8.9 1.0 " <br />Toluene 48 1.0 " <br />Ethylbenzene 44 1.0 " <br />Xylenes (total) 210 1.0 " <br />Surrogate: a,a,a-Tris luorotoluene 105% 60-140 <br />L2-2-2-3 (S202153-02) Soil Sampled: 02/11/02 14:25 Received: 02/12/02 12:35 <br />Purgeable Hydrocarbons 40 10 mg/kg 2 2020149 02/13/02 02/13/02 DHS LUFT <br />Benzene 0.20 0.10 " <br />Toluene 0.78 0.10 " <br />Ethylbenzene 0.99 0.10 " <br />Xylenes (total) 5.1 0.10 " <br />Surrogate: a,a,a-Trifluorotoluene 86.0% 60-140 <br />L2-3-3.5 (5202153-03) Soil Sampled: 02/11/02 00:00 Received: 02/12/02 12:35 <br />Purgeable Hydrocarbons 860 50 mg/kg 10 2020149 02/13/02 02/13/02 DHS LUFT <br />Benzene 3.0 0.50 " <br />Toluene 11 0.50 " <br />Ethylbenzene 13 0.50 " <br />Xylenes (total) 55 0.50 " <br />Surrogate: a,a,a-Tris luorotoluene 91.8% 60-140 <br />Sequoia Analytical - Sacramento The results in this report apply to the samples analyzers in accordance with the chain of <br />custody document. This analytical report must be reproduced in its entirety. <br />Page 2 of 6 <br />0 <br />