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,�''"�) Sequoia <br />-�►�•, r,FAnalytical <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: Arco 6100, Tracy, CA Reported: <br />Cameron Park CA, 95682 Project Manager: Jay Johnson 01/23/02 11:25 <br />Total Purgeable Hydrocarbons and BTEX by DHS LUFT <br />Sequoia Analytical - Sacramento <br />Reporting <br />Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br />D-1-6 (S201303-01) Soil Sampled: 01/18/02 10:50 <br />Received: 01/18/02 15:50 <br />Purgeable Hydrocarbons <br />34 <br />5.0 <br />mg/kg 1 2010265 01/21/02 01/21/02 DHS LUFT <br />Benzene <br />0.25 <br />0.025 <br />" <br />Toluene <br />ND <br />0.025 <br />" <br />Ethylbenzene <br />0.58 <br />0.025 <br />" <br />Xylenes (total) <br />1.9 <br />0.025 <br />" <br />Surrogate: a,a,a-Trifluorotoluene <br />60-140 " <br />102% <br />60-140 <br />D-2-3.6 (5201303-02) Soil Sampled: 01/18/02 11:10 <br />Received: 01/18/02 15:50 <br />Purgeable Hydrocarbons <br />1200 <br />50 <br />mg/kg 10 2010265 01/21/02 01/21/02 DHS LUFT <br />Benzene <br />3.2 <br />0.25 <br />14 <br />Toluene <br />13 <br />0.25 <br />12 <br />Ethylbenzene <br />15 <br />0.25 <br />67 <br />Xylenes (total) <br />94 <br />0.25 <br />" <br />Surrogate: a,a,a-Trifluorotoluene <br />60-140 <br />87.5% <br />60-140 <br />D-3-3.6 (S201303-03) Soil Sampled: 01/18/02 11:25 Received: 01/18/02 15:50 <br />Purgeable Hydrocarbons <br />810 <br />20 <br />mg/kg 4 2010265 01/21/02 01/21/02 DHS LUFT <br />Benzene <br />0.84 <br />0.10 <br />Toluene <br />12 <br />0.10 <br />" <br />Ethylbenzene <br />9.7 <br />0.10 <br />Xylenes (total) <br />57 <br />0.10 <br />Surrogate: a,a,a-Trifluorotoluene <br />96.8% <br />60-140 " <br />D-4-4 (S201303-04) Soil Sampled: 01/18/02 11:40 <br />Received: 01/18/02 15:50 <br />Purgeable Hydrocarbons <br />840 <br />20 <br />mg/kg 4 2010265 01/21/02 01/21/02 DHS LUFT <br />Benzene <br />1.2 <br />0.10 <br />" <br />Toluene <br />14 <br />0.10 <br />Ethylbenzene <br />12 <br />0.10 <br />Xylenes (total) <br />67 <br />0.10 <br />" <br />Surrogate: a,a,a-Trifluorotoluene <br />92.6% <br />60-140 <br />Sequoia 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 Page 2 of 17 <br />