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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento, CA 95834 <br /> 4 (916)921-96W <br /> 4z) FA921 icp <br /> Analytical www sequolalabs com <br /> Stratus Environmental Project ARCO 548, Stockton,CA Sampled 6/26/00 <br /> 3330 Cameron Park Drive,Ste 550 Project Number N/A Received 6/27/00 <br /> Cameron Park,CA 95682 Project Manager Jay Johnson Reported 7/12/00 <br /> Volatile Organic Compounds by EPA Method 8260A <br /> Sequoia Analytical-Walnut Creek <br /> Batch Date Date Specific Reporting <br /> Analyte Number Prepared Analyzed Method Limit Result Units Notes* <br /> MW-1-25 5006357-01 Water <br /> tert-Butyl alcohol 0G07019 7/7/00 717/00 EI'A 8260A 100 ND Ug/1 <br /> Methyl tert-butyl ether EPA 8260A 20 ND " <br /> Di-isopropyl ether EPA 8260A 20 ND " <br /> Ethyl tert-butyl ether EPA 8260A 20 ND " <br /> tent-Amyl methyl ether EPA 8260A 20 ND <br /> Surrogate Dibromofluoromethane " " 50-150 100 % <br /> Surrogate 1,2-Dtchloroethane-d4 " " " 50-150 940 " <br /> MW-2-25 S006357-02 Water <br /> Cert-Butyl alcohol 0G07019 717100 7/7/00 EPA 8260A 100 ND ug/l <br /> Methyl tert-butyl ether EPA 8260A 20 ND " <br /> D1-isopropyl ether EPA 8260A 20 ND " <br /> Ethyl tert-butyl ether EPA 8260A 20 ND <br /> Alkkmyl methyl ether EPA 8260A 20 ND <br /> ogate Dibromofluoromethane 50450 102 % <br /> Surrogate 12-Dtchloroethane-d4 50-150 960 if <br /> MW-3-25 S006357-01 Water <br /> tert-Butyl alcohol 0G07019 7/7/00 7/7/00 EPA 8260A 100 ND ug/1 <br /> Methyl tert-butyl ether " " " EPA 8260A 20 63 " <br /> Di-isopropyl ether EPA 8260A 20 ND " <br /> Ethyl tert-butyl ether EPA 8260A 20 ND " <br /> tert-Amyl methyl ether EPA 8260A 20 ND _ <br /> Surrogate Dibromofluoromethane 50-150 102 % <br /> Surrogate 1 2-Dichloroethane-d4 50-150 940 if <br /> MW-4-26 S006357-04 Water <br /> tent-Butyl alcohol 0G07019 717/00 7/7/00 EPA 8260A 100 ND ug/1 <br /> Methyl tert-butyl ether EPA 8260A 20 ND " <br /> Di-isopropyl ether EPA 8260A 20 ND " <br /> Ethyl tert-butyl ether " " " EPA 8260A 20 ND to <br /> tert-Amyl methyl ether EPA 8260A 20 ND " <br /> Surrogate Dibromofluoromethane 50-150 102 <br /> Surrogate 12-Dtchloroethane-d4 50-150 940 <br /> MW-5-24 S006357-05 Water <br /> tert-Butyl alcohol 0G07019 7/7/00 7/7/00 EPA 8260A 100 ND ug/l <br /> Methyl tert-butyl ether II EPA 8260A 20 42 " <br /> Di-isopropyl ether .EPA 8260A 20 ND " <br /> Ethyl tert-butyl ether EPA 8260A 20 ND <br /> yl methyl ether EPA 8260A 20 ND " <br /> Sequoia Analytical-Sacramento *Refer to end of report for text ofnotes and definitions <br /> Page 4 of 8 <br />