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0 • 6b Curtis &Tompkins. Ltd. <br /> LABORATORY NUMBER: 101391 - 1 DATE RECEIVED: 08 / 15 /90 <br /> CLIENT: TREADWELL & ASSOCIATES DATE EXTRACTED: 08 / 15 / 90 <br /> JOB #: 1107A DATE ANALYZED: 08/ 16 / 90 <br /> SAMPLE ID: B- 1 - 1 DATE REPORTED: 08 / 17 / 90 <br /> EPA 8140 : Organophosphorus Pesticides in Water <br /> Extraction Method : EPA 3510 <br /> COMPOUND RESULT REPORTING <br /> LIMIT <br /> ug/L ug/L <br /> Chlorpyrifos ND 10 <br /> Demeton ND 10 <br /> Diazinon ND 17 <br /> Dichlorvos ND 25 <br /> Disulfoton ND 10 <br /> Ethoprophos ND 10 <br /> Fenchlorfos ND 10 <br /> Fenssulfothion ND 10 <br /> Fenthion ND 10 <br /> Methyl Parathion ND 10 <br /> Malathion ND 10 <br /> Merphos A ND 10 <br /> Merphos B ND 10 <br /> Mevinphos ND 10 <br /> Naled ND 10 <br /> Phorate ND 10 <br /> Tetrachlorvinphos ND 25 <br /> Trichloronate ND 10 <br /> ND = Not detected at or above reporting limit . <br /> QA/QC SUMMARY <br /> RPD, % 9 <br /> RECOVERY, % 106 <br />