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819 Sinker Avenue Suite 8 <br /> Sequoia Saciarnento CA <br /> 95834 <br /> (916)9zt-9600-9600 <br /> FAX(916)921-0100 <br /> eqwr Analytical www seguoialabsCOM <br /> Gettler-Ryan-Dublin Project Lfnocal 0187, Stockton CA <br /> 6747 Sierra Court Ste J Project Number C-Sparge Test Reported <br /> Dublin CA,94568 Project Manager Paul LeCheininant 05/30/01 16 33 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> NP-1-22(S105327-01)Water Sampled 05/2210100 00 Received 05/22/01 15 55 <br /> Purgeable Hydrocarbons 6540 500 ug/l 10 1050329 05/24/01 05/24/01 DHS LUFr zP-02 <br /> Benzene 213 500 <br /> Toluene 19 8 500 " <br /> Ethylbenzene 221 500 " <br /> Xylenes(total) 580 500 " <br /> Methyl tert-butyl ether 373 25 0 " <br /> Surrogate a a a-Trtfluorotoluene 125% 60-140 " <br /> NP-1-65(Sl05327-02)Water Sampled 05/22/01 00 00 Received 05/22/01 15 55 <br /> Purgeable Hydrocarbons 1380 250 ug/1 5 1050329 05/24/01 05/24/01 DHS LUFT zP-02 <br /> Benzene 306 2 50 <br /> Toluene 193 250 " <br /> Wlylbenzene 271 250 " <br /> enes(total) 293 250 " <br /> Methyl tert-butyl ether ND 125 " <br /> Surrogate a a a-Trtfluorotoluene 880% 60-140 " <br /> NP-1-111 (5105327-03)Water Sampled 05/2210100 00 Received 05/22/01 15 55 <br /> Purgeable Hydrocarbons ND 500 ug/i 1 1050329 05/24/01 05/24/01 DHS LUFT <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) 0 948 0 500 " <br /> Methyl tert-butyl ether ND 250 " <br /> Surrogate a a a-Trtfluorotoluene 807% 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 2 of 6 <br />