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Sequoia 819 Striker Avenue,Suite 8 <br /> Sacramento, CA 95834 <br /> ID (916)921-9600 <br /> Analytical FAX(916)9abs.co 0 <br /> vs�ntw.sequoialaUs.com <br /> Delta Environmental Consultants(Cameron Park) Project: ARCO 548,Stockton,CA <br /> 3330 Cameron Park Dr. Ste 750 Project Number: NIA Reported: <br /> Cameron Park CA,95682 Project Manager: Jay Johnson 10/08/01 14:14 <br /> Total Purgeable Hydrocarbons, BTEX and MTBE in Air by DHS LUFT <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> INF Total'Air (S110003-01)Air Sampled: 10/0110106.00 Received: 1010110109:10 <br /> Purgeable Hydrocarbons 690 100 mg/ml Air 10 1100064 10/03/01 10/03/01 DHS LUFT <br /> Benzene ND 0.50 " <br /> Toluene ND 0.50 <br /> Ethylbenzene 4.4 0.50 ^ <br /> Xylenes(total) 62 0.50 <br /> Methyl tert-butyl ether _ ND _ 5.0 <br /> Surrogate:a,a,a-Trifluorotoluene 73.5% 60-140 " <br /> INF Cat Air(5110003-02)Air Sampled: 10/01/01 05:58 Received: 10/01/0109:10 <br /> Purgeable Hydrocarbons 770 100 mg/m'Air 10 1100064 10/03/01 10/03/01 DHS LUFT <br /> Benzene ND 0.50 <br /> Toluene ND 0.50 <br /> Ethylbenzene 4.8 0.50 <br /> nes(total) 67 0.50 ^ <br /> llrYl tert-butyl ether _ ND 5.0 ^ <br /> Surrogate:a,a,a-Triuorotoluene 104% _ 60-140 <br /> EFF Air(5110003-03)Air Sampled: 10/01/01 05:56 Received: 1010110109:10 <br /> Purgeable Hydrocarbons ND 10 mg/ml Air 1 1100064 10/03/01 10/03/01 DHS LUFT <br /> Benzene ND 0.050 <br /> Toluene ND 0.050 <br /> Ethylbenzene ND 0.050 <br /> Xylenes(total) ND 0.050 " ^ <br /> Methyl tert-butyl ether ND 0.50 " <br /> Surrogate:a,a,a-Trifluorotoluene 58.0% 60-140 5-04 <br /> uola 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 he reproduced in its entirety, <br /> Page 2 of 6 <br />