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1455 McDowell Blvd North Ste D <br /> Sequoia Petaluma,CA 94954 <br /> (707)792-1865 <br /> 1W Analytical FAX 792-0342 <br /> www sequoquofalabs com <br /> Gambna Environmental Project Equiva Sampled 5/23/00 to 5125/00 <br /> 270 Perkins St Project Number 6131 Pacific Ave,Stockton Received 5126100 <br /> Sonoma,CA 95476 Pro ect Mana er Aubre Cool Reported 616100 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015M/8020M <br /> Sequoia Analytical-Petaluma <br /> Batch Date Date Surrogate Reporting <br /> lAnalyte Number Prepared Analyzed Lirmts Lutmt Result Units Notes• <br /> SB-6W-70' continued P005752-23 Water <br /> Methyl tert-butyl ether _ __ 0060021_ _6/l/00 _ _6/l/00 _ 250 ND ug/I <br /> Surrogate a,a a-Trtuorotoluene " 650-135 105 % <br /> Surrogate 4-Bromofluorobenzene 650-135 900 11 <br /> SB-6W-80' P005752-24 Water <br /> Gasoline 0060021 6/1/00 6/2/00 500 140 ug/l <br /> Benzene 0 500 1.36 It <br /> Toluene 0 500 110 " <br /> Ethylbenzene " 0 500 354 " <br /> Xylenes(total) " 0 500 242 " <br /> _Methyl tert-butyl ether " 250 ND " <br /> Surrogate aa a-Trifluorotoluene " " 650435 106 % <br /> Surrogate 4-Bromofluorobenzene " " 650435 933 " <br /> sawy-901 P005752-25 Water <br /> ne 0060021 6/l/00 6/2/00 500 1670 ug/l <br /> Benzene " 0 500 268 " <br /> Toluene 0 500 312 " <br /> Ethylbenzene 0 500 258 " <br /> Xylenes(total) 0 500 209 " <br /> Methyl tert-butyl ether 250 ND " <br /> Surrogate a,a,a-Trifluorotoluene 650-135 101 % <br /> Surrogate 4-Bromofluorobenzene 650-135 990 " <br /> SB-6W-97 P005752-26 Water <br /> Gasoline 0060021 611100 612/00 500 445 ug11 <br /> Benzene " 0 500 1.72 " <br /> Toluene 0 500 138 " <br /> Ethylbenzene 0 500 892 " <br /> Xylenes(total) 0 500 717 " <br /> Methyl tert-butyl ether IF 250 ND " <br /> Surrogate a,a,a-Trifluorotoluene IF 650-135 106 % <br /> Surrogate 4-Bromofluorobenzene " 650-135 933 " <br /> ANOL <br /> a Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 8 of 17 <br />