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Sequoia 819 Stoker Avenue,Suite 8 <br /> SderamentU,CA 95834 <br /> (916)921-9600 <br /> qwr Analytical FAX(916)921-0100 <br /> www.sequolalabs.com <br /> Delta Environmental Consultants Project: Arco 5569 Stockton,CA Sampled: 7/31/00 <br /> 3330 Cameron Park Dr. Project Number: N/A Received: 8/l/00 <br /> Cameron Park,CA 95682 Project Mana er: Jay Johnson Reported: 8/3, 7/00 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical-Walnut Creek <br /> Batch Date Date Specific Reporting <br /> Analyte Number Pre ared Analyzed Method Limit Result Units Notes* <br /> D1-2 S008002-01 Soil <br /> tert-Butyl alcohol OH02010 8/2/00 8/2/00 EPA 8260B 5.0 ND mg/kg D <br /> Methyl tert-butyl ether EPA 8260B 0.10 ND D <br /> Di-isopropyl ether EPA 8260B 0.10 ND D <br /> Ethyl tert-butyl ether EPA 8260B 0.10 ND D <br /> cert-Amyl methyl ether " EPA 8260B 0.10 ND D <br /> Surrogate: Dibromafuoromethane 50-I50 100 % D <br /> Surrogate.' 1,2-Dichloroethane-d4 50-150 102 " D <br /> D2-2 S008002-02 Soil <br /> tert-Butyl alcohol OH02010 8/2/00 8/2/00 EPA 8260B 5.0 ND mg/kg D <br /> Methyl tert-butyl ether Ip EPA 8260B 0.10 ND D <br /> Di-isopropyl ether EPA 8260B 0.10 ND ID <br /> Ethyl tert-butyl ether EPA 8260B 0.10 ND D <br /> tert-Amyl methyl ether _" _ EPA 8260B 0.10 ND D <br /> Surrogate: Dihromofuoromethane T, 50-150 -106 % D <br /> Surrogate.: /,2-Dichloroethane-d4 50-150 102 D <br /> D3-2 5008002-03 Soil <br /> ten-Butyl alcohol OH02010 8/2/00 8/2/00 EPA 8260B 5.0 ND mg/kg D <br /> Methyl tert-butyl ether EPA 8260B 0.10 ND D <br /> Di-isopropyl ether EPA 8260B 0.10 ND D <br /> Ethyl tert-butyl ether EPA 8260B 0.10 ND D <br /> tert-Amyl methyl ether _ EPA 8260B __ 0.10 ND D <br /> Surrogate: Dibromofuo _ <br /> ramethane - " 50-150 102 % D <br /> Surrogate: 1,2-Dichloroethane-d4 50-150 102 " D <br /> D4-2 S008002-04 Soil <br /> tert-Butyl alcohol OH02010 8/2/00 8/2/00 EPA 8260B 5.0 ND mg/kg D <br /> Methyl tert-butyl ether EPA 8260B 0.10 ND " D <br /> Di-isopropyl ether EPA 8260B 0.10 ND D <br /> Ethyl tert-butyl ether EPA 8260B 0.10 ND D <br /> cert-Amyl methyl ether _ _ EPA 8260B 0.10 ND __ D _ <br /> Surrogate. Dihromofuoromethane 50-/50 104 % D <br /> Surrogate: 1,2-Dichloroethane-d4 50-150 102 " D <br /> D5-2 5008002-05 <br /> Soil <br /> tert-Butyl alcohol OH02010 8/2/00 8/2/00 EPA 8260B 5.0 ND mg/kg D <br /> Methyl tert-butyl ether I. P EPA 8260B 0.10 ND D <br /> Di-isopropyl ether P. EPA 8260B 0.10 ND D <br /> Ethyl ten-butyl ether EPA 8260B 0,10 ND D <br /> ten-Amyl methyl ether " " EPA 8260B 0.10 ND D <br /> Sequoia Analytical-Sacramento *Refer to end ofreportfor text ofnotes and definitions. <br /> Page 7 of 14 <br />