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15 <br /> rial Road <br /> dustSequoia San Caros CA94070 <br /> (650)232-9600 <br /> FAX Analytical ww.se(650)232-9612 <br /> wwwsequoialahs.com <br /> Pro ect: <br /> 's -r-Ryan/Geostrategies(1) j Tosco(l) <br /> 6747 Sierra Court,Suite J Project Number: UNOCAL SS#1 l 195,LATHROP,CA Reported: <br /> Dublin CA,94568 Project Manager: Deanna Harding 08/28/01 07:22 <br /> Total Purgeable Hydrocarbon (C6-C12) by EPA 8015M and BTEXIMTBE by EPA 8021B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-3 (L108074-04)WaIer Sampled:08110101 16:50 Received: 08/10/01 18:55 -: <br /> Purgeable Hydrocarbons as Gasoline 110 50 ug/l 1 1080100 08/23/01 08/24/01 DHS LUFT P-01 <br /> Benzene ND 0.50 " <br /> Toluene 1.6 0.50 " <br /> Ethylbenzene 3.0 0.50 " <br /> Xylenes(total) 3.0 0.50 <br /> Methyl ter(-butyl ether 2600 500 100 M-04 <br /> Surrogate:a,a,a-Trtfluorotoluene 115% 70-130 " <br /> MNt1'-4 (L)080'74-05)Water Sampled:08/10/01 17:20 Received: 08/10/01 18:55 <br /> Purgeable Hydrocarbons as Gasoline 110 50 ug/l 1 1080107 08/24/01 08/24/01 DHS LUFT P-02 <br /> Benzene 1.7 0.50 " <br /> Toluene 1.9 0.50 " <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) 1.4 0.50 " <br /> 1%7etbyl tert-butyl ether 15 5.0 " <br /> 5 :=: }ate:a,a,a-Triuorotoluene 132% 70-130 S-04 <br /> MM'-5(L]08074-06)WaterSampled: 08/10/01 16:15 Received: 08/10/01 18:55 <br /> Purgeable Hydrocarbons as Gasoline ND 250 ug/1 5 1080106 08/24/01 08/24/01 DHS LUFT <br /> Benzene ND 2.5 " <br /> Toluene ND 2.5 " <br /> Ethylbenzene ND 2.5 " <br /> Xylenes(total) ND 2.5 " PI " <br /> Methyl tert-butyl ether 3900 250 50 M-04 <br /> Surrogate:a,a,a-Trifluororoluene 115% 70-130 <br /> Aa Analytical-San Carlos 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 3 of 22 <br />