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1r , <br /> 404 N Wiget Lane <br /> Sequoia Walnut Creek CA 94598 <br /> (925)988-96W <br /> Analytical <br /> FAX`925'9EIS-9673 <br /> wwww sequolalabs Comom <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco#6981 Reported <br /> Dublin CA,94568 Project Manager Scott Polston 05-Sep-01 18 11 <br /> — Total Purgeable Hydrocarbons (C6-C12) and BTEX in Air by DHS LUFT <br /> Sequoia Analytical - Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> Ve-4(W 108418-05)Air Sampled 23-Aug-01 08 53 Received 23-Aug-01 11 03 <br /> Purgeable Hydrocarbons(C6-C12) ND 28 ppmv l IR21003 23-Aug-01 23-Aug-01 DHS LUFT <br /> Benzene ND 0 016 <br /> Toluene ND 0 O l3 <br /> Ethylbenzene ND 0 012 <br /> Xylenes(total) ND 0 012 <br /> Methyl tert-butyl ether(MTBE) ND 014 <br /> Ve-2(W 108418-06)Air Sampled 23-Aug-01 08 57 Received 23-Aug-01 1103 <br /> Purgeable Hydrocarbons(C6-C12) ND 28 ppmv 1 1H21003 23-Aug-01 23-Aug-01 DHS LUFT <br /> Benzene ND 0 016 ^ " <br /> Toluene ND 0 013 <br /> Ethylbenzene ND 0 012 ^ <br /> Xylenes(total) ND 0 012 <br /> Methyl tert-butyl ether(MTBE) ND 0 14 <br /> Ve-5(W108418-07)Air Sampled 23-Aug-01 09 00 Received 23-Aug-01 11 03 <br /> Purgeable Hydrocarbons(C6-C 12) ND 28 ppmv 1 IH21003 23-Aug-01 23-Aug-01 DHS LUFT <br /> Benzene ND 0 016 <br /> Toluene ND 0 013 <br /> Ethylbenzene ND 0 012 <br /> Xylenes(total) ND 0 012 <br /> Methyl tert-butyl ether(MTBE) ND 0 14 <br /> Ve-1(W 108418-08)Air Sampled 23-Aug-01 09 02 Received 23-Aug-01 11 03 <br /> Purgeable Hydrocarbons(C6-C12) ND 2 8 ppmv 1 1H21003 23-Aug-01 23-Aug-01 DHS LUFT <br /> Benzene ND 0 016 " <br /> Toluene ND 0 013 <br /> Fthylbenzene ND 0 012 <br /> Xylenes(total) ND 0 012 <br /> Methyl tert-butyl ether(MTBE) ND 0 14 <br /> Sequoia Analytical- Walnut Creek 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 ent0 <br /> Page 6 of 12 <br />