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1455 McDowell Blvd North Ste D <br /> Sequoia Petal(707)9z 1865 <br /> FAX(707) 792-0342 <br /> 4D— Analyticalw ww ,sequoialabs com <br /> Cambria Environmental Project Equiva Sampled 3127/00 to 3/30/00 <br /> 270 Perkins St Project Number 620W Chmtei,Stockton Received 3/31/00 <br /> Sonoma,CA 95476 Project Manager Aubrey Cool Reported 4/17100 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015M/8020M <br /> Sequoia Analytical-Petaluma <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Lirmt Result Units Notes* <br /> CPT4-20 5'(continued) P004023-26 Soil <br /> Ethylbenzene 0040139 4/7100 4/7/00 000500 ND mg/kg <br /> Xylenes(total) 000500 ND " <br /> Methyl tert-butyl ether 00500 ND _ <br /> Surrogate a a a-Trifluorotoluene 650-135 107 % <br /> Surrogate 4-Bromofluorobenzene 650-135 875 11 <br /> CPT4-30 5' P004023-27 Soil <br /> Gasoline 0040139 417/00 417/00 100 ND mg/kg <br /> Benzene 000500 ND " <br /> Toluene 000500 ND " <br /> Ethylbenzene 000500 ND " <br /> Xylenes(total) 000500 ND " <br /> Methyl tert-butyl ether _ 00500 ND <br /> rrogate a a a-Trifluorotoluene 650-135 103 % <br /> rrogate 4 Bromofluorobenzene " 650-135 813 11 <br /> CPT-4-40 5' P004023-28 Sod <br /> Gasoline 0040139 4/7/00 417/00 100 ND mg/kg <br /> Benzene 000500 ND " <br /> Toluene 000500 ND " <br /> Ethylbenzene 000500 ND " <br /> Xylenes(total) 000500 ND " <br /> Methyl.tent-butyl ether0 0500 ND " <br /> Surrogate a,a,a-Trifluorotoluene to — If65 0-135 972 % <br /> Surrogate 4-Bromofluorobenzene 650-135 85 2 it <br /> CPT-4-60 5' P004023-29 Soil <br /> Gasoline 0040139 4/7/00 417/00 100 ND mg/kg <br /> Benzene 000500 00155 " <br /> Toluene 000500 ND " <br /> Ethylbenzene 000500 ND " <br /> Xylenes(total) 000500 000858 " <br /> _Methyl tert-butyl ether _ 00500 _ –ND _ <br /> Surrogate a,a a-Trifluorotoluene 650-135 104 % <br /> Surrogate 4-Bromofluorobenzene " " to 650-135 840 " <br /> CPT-4-73' P004023-30 Sol <br /> Gasoline 0040092 4/9/00 4/10100 500 356 mg/kg <br /> Benzene 0 250 ND " <br /> Toluene 0 250 1 13 " <br /> hylbenzene 0 250 268 " <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of nates and definitions <br /> Page 6 of 22 <br />