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Sequoia Walnut Creek CA9 598 <br /> (925)988-9600 <br /> Analytical FAX(925) 988-9673 <br /> I2Ray F Weston Project San Joaquin HSA <br /> Reported <br /> 304 Clayton Road Project Number San Joaqum HSA <br /> Concord CA,94520 Project Manager Scott Lookuigbtll 17-Dec-99 13 22 <br /> ITotal Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Linut Units Dilution Batch Prepared Analyzed Method :N,tes <br /> MW-9(W911408-01)Water Sampled 15-Nov-99 14 00 Received 16-Nov-99 15 30 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 9K18002 18-Nov 99 19-Nov-99 DHS LUFT <br /> Benzene ND 050 <br /> toluene ND 050 " <br /> Ethylberâ–ºzene ND 050 <br /> Xylenes(total) ND 050 <br /> Surrogate a,a,a-Trtfluorotoluene 100 % 70-130 <br /> MW-5(W911408-02)Water Sampled 15-Nov-99 10 40 Received 16-Nov-99 15 30 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 9K18002 18-Nov 99 19 Nov 99 DHS LUFT <br /> Benzene ND 050 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 <br /> W-6 <br /> gate a a a-Tnfluorotoluene 100% 70-130(W911408-03)Water Sampled 16-Nov-99 09 20 Received 16-Nov-99 15 30 <br /> Purgeable Ilydrocarbons ND 50 ug/I 1 9K18002 18-Nov-99 19-Nov-99 DHS LUFT <br /> Benzene ND 050 <br /> loluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 <br /> Surrogate a a a-Trtfluorotoluene 100% 70-130 " <br /> MW-4 (W911408-04)Water Sampled 15-Nov-99 14 57 Received 16-Nov-99 15 30 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 9KI9002 18-Nov-99 19-Nov-99 DHS LUFT <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Surrogate a,a a-Trtfluorotoluene 100 % 70-130 <br /> I <br /> equola Analytical -Walnut Creek The resvlts in day report apply to the samples analyzed inaccorakmce with the chain of <br /> custody document Thiv analytical report must be reproduced in t A entirety <br /> Jt e eg cy, rTeLt'TVfanagerJ <br /> Page 2 of 7 <br />