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cCurtis &Tompkins. Ltd. <br /> LABORATORY NUMBER : 104953 . 1 DATE RECEIVED: 08 / 23 / 91 <br /> CLIENT : TREADWELL & ROLLO DATE EXTRACTED: 08 / 30 / 91 <br /> PROJECT ID: 1107A DATE ANALYZED: 09 / 10 /91 <br /> LOCATION: MENTECA DATE REPORTED: 09 / 11 / 91 <br /> SAMPLE ID: NW- 1 $ouRc.B: MW'I <br /> EPA 8140 : Organophosphorus Pesticides in Water <br /> Extraction Method : EPA 3510 <br /> CO`1POUND RESULT REPORTING <br /> LIMIT <br /> ug/L ug /L <br /> Thimet ( Phorate ) ND 50 <br /> Disulfoton ND 50 <br /> Diazinon ND 50 <br /> Methyl Parathion ND 50 <br /> Malathion ND 50 <br /> Parathion ND 50 <br /> Methyl Trithion ND 50 <br /> Ethion ND 50 <br /> ND = Not detected at or above reporting limit . <br /> QA/QC SUM%1ARY: SURROGATE RECOVERY <br /> --------------------------------------------------------------- <br /> --------------------------------------------- <br /> 1 , 3 -Dimethyl - 2 -Nitrobenzene 110 % <br />