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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> www sequoialabs com <br /> ]ta Environmental Consultants(Cameron Park) Project Arco 6100,Tracy,CA <br /> 330 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 5201303-01 Soil Sampled 01/18/02 10 50 Received 01/18/02 15 50 <br /> Purgeable Hydrocarbons 34 50 mg/kg l 2010265 01/21/02 01/21/02 DHS LUFT <br /> Benzene 025 0 025 " <br /> Toluene ND 0 025 <br /> Ethylbenzene 058 0 025 " <br /> Xylenes(total) 19 0 025 <br /> Surrogate a,a,a-Trifluorotoluene 102% 60-140 <br /> D-2-3 6 5201303-02 Soil Sam led 01/18/02 11 I0 Received 01/18/02 15-50 <br /> Purgeable Hydrocarbons 1200 50 mg/kg 10 2010265 01/21/02 01/21102 DHS LUFT <br /> Benzene 3 2 025 <br /> Toluene 13 025 " <br /> Ethylbenzene 15 025 <br /> Xylenes(total) 94 025 " <br /> Surrogate aa a-Trifluorotoluene 875% 60-140 " <br /> -3 6 5201303-03 Soil Sampled 01/18/02 11 25 Received 01/18/02 15 50 <br /> geable Hydrocarbons 810 20 mg/kg 4 2010265 01/21/02 01/21/02 DHS LUFT <br /> Benzene 0 84 010 " <br /> Toluene 12 010 <br /> Ethylbenzene 9 7 0 10 " <br /> Xylenes(total) 57 0 10 <br /> Surrogate a,a,a-Trifluorotoluene 968% 60-140 " <br /> D-4-4 S201303-04 Soil Sampled 01/18/02 11 40 Received 01/18/02 15 50 <br /> Purgeable Hydrocarbons 840 20 mg/kg 4 2010265 01/21/02 01/21/02 DHS LUFT <br /> Benzene 12 010 <br /> Toluene 14 010 <br /> Ethylbenzene 12 0 10 „ <br /> Xylenes(total) 67 0 10 <br /> Surrogate a a,a-Trifluorotoluene 92 6% 60-140 » <br /> oia 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 />