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Sequoia 819 Spiker veAnue,Suite 8 <br /> Sacramento. e, 95834 <br /> (916)921-9600 <br /> AFAX921-0100 <br /> Analytical <br /> www.seciuoquolalabs.wm <br /> Delta Environmental Consultants Project: Arco 5569 Stockton,CA Sampled: 7/31/00 <br /> 3330 Cameron Park Dr. Project Number: N/A Received: 8/1/00 <br /> Cameron Park,CA 95682 Project Manager: 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 /> Anal a Number ------- Analyzed Method Limit Result Units Notes* <br /> P2-3(continued) SOOS002-10 Soil <br /> Methyl tert-butyl ether OH02010 8/2/00 8/2/00 EPA 8260B 0.10 ND mg/kg D <br /> Di-isopropyl ether 1. EPA 8260B 0.10 ND " D <br /> Ethyl tert-butyl ether P. „ EPA 8260B 0.10 ND D <br /> tert-Amyl methyl ether __ EPA 8260B 0.10_ ND D _ <br /> Surrogate: DibromaJluoromthanee50-150 104 % D <br /> Surrogate: 1,2-Dichloroethane-d4 50-150 104 " D <br /> P3-3 SOOS002-11 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 /> tert-Amyl methyl ether I. " _EPA 8260_B_ 0.10 ND D _ <br /> Surrogate: Dibromofluoromethane 50-150 101 % D <br /> Surrogate: 1,2-Dichloroethane-d4 50-150 104 D <br /> P44 S008002-12 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 EPA 8260B 0.10 ND I D <br /> Di-isopropyl ether " EPA 8260B 0.10 ND D <br /> Ethyl cert-butyl ether EPA 8260B 0.10 ND D <br /> tert-Amyl methyl ether _ _ __ EPA 8260B 0.10 ND D <br /> Surrogate. Dibromojluoromethane _ <br /> 50-150 102 % D <br /> Surrogate: 1,2-Dichloroethane-d4 50-150 104 " D <br /> P5-5 S008002-13 Soil <br /> cert-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 I. D <br /> Di-isopropyl ether EPA 8260B 0.10 ND D <br /> Ethyl ter[-butyl ether EPA 8260B 0.10 ND D <br /> cert-Amyl methyl ether " " Ip _ EPA 8260B 0.10 ND D _ <br /> Surrogate: DibromoJluoromethane 50-150 104 % D <br /> Surrogate.: 1,2-Dichloroethane-d4 50-150 106 " D <br /> WSP(A.B)Composite S008002-14 <br /> Soil <br /> tert-Butyl alcohol OH02010 8/2/00 8/3100 EPA 8260B 5.0 ND mg/kg D <br /> Methyl tert-butyl ether EPA 8260B 0.10 ND IpD <br /> Di-isopropyl ether EPA 8260B 0.10 ND D <br /> Ethyl tert-butyl ether EPA 8260B 0.10 ND •' p <br /> tert-Amyl methyl ether __ _ "__ EPA 8260B _ 0.10 ND _ D_ <br /> Surrogate. Dibramofluoromethane 50-150 102 % D <br /> Sequoia Analytical-Sacramento *Refer to end ofreport for text ofnotes and definitions. <br /> Page 9 of 14 <br />