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1455 McDowell Blvd North Ste IJ <br /> Petaluma CA 94954 <br /> Sequoia (707)792-186.1 <br /> Analytical ww <br /> 1:�) FAX(707)792-0342 <br /> ws,,quo,alahs corn <br /> V <br /> tler-Ryan-Dublin Project Unocal <br /> ProjectNumber C-Sparge Test/0187, Stockton,CA Reported <br /> 6747 StetTa Ct,Suite] 08/07/01 15 10 <br /> Dub <br /> ltn CA,94568 Project Manager Paul Le Chetntnant <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015M/8020M <br /> Sequoia Analytical - Petaluma <br /> Reporting <br /> Analyte Result Gantt Units Dilution Batch Prepared Analyzed Method Notes <br /> NP-1-22 P108012-01 Water Sampled 07/31/0110 00 Received 08/01/01 13 25 <br /> Gasoline(C6-C12) 8800 500 ug/l 10 1070618 08/0211}1 08/02/01 EPA <br /> 8015Ml8020M <br /> Benzene 190 5 0 QR-04 <br /> Toluene 34 „ „ <br /> 1lthylbenzene 280 5 0 " <br /> 5 0 <br /> Xylenes(total) 850 <br /> Methyl tert-butyl ether ND 25 <br /> Surrogate a a a-Trnfluototoluene 93 0% 65-135 „ <br /> Surrogate 4-Bromofluorobenzene 101 % 65-135 " <br /> NP-1-65 P108012-02 Water Sampled 07/11/0109 50 Received 08/01/01 13 25 <br /> EPA <br /> Gasoline(C6-C12) 2800 250 ug/l 5 1070618 08/02/01 U8l021t}l 8015M/020M <br /> Benzene 110 <br /> Toluene 540 2 5 <br /> 0I!benzene <br /> 85 2 5 +, „ <br /> nes(total) 420 25 „ <br /> Methyl tett-butyl other ND 12 „ <br /> ” <br /> Surrogate a a,a-Trrfluvrutvkrene 100% 65-135 <br /> Surrogate 4-Bromofluorohenzene 99 7% 65-135 <br /> NP-1-111 P108012-03 Water Sampled 07131/0109 40 Received 08/01/01 13 25 <br /> Gasoline(C6-C 12) ND 50 ugil 1 1070618 08/02/01 08/02/01 EPA <br /> 8015M/020M <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 <br /> Lthylben0zene ND 50 „ <br /> ND 050 " <br /> Xylenes(total) „ <br /> Methyl tent-butyl ether ND 2 5 II „ <br /> Surrogate a,a,a-Difluoroluluene 107% 65-135 <br /> Surrogate 4-Bromofluvrobenzene 980% 65-135 <br /> nota Analytical-PetalumaThe resells in thu report apply to rhe sample~analyzed to accordance wish the chain of <br /> custody document Thic analytical report must he reproduced to its entrren, <br /> Page 2 of 6 <br />