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Converse Envirolab Telephone (818)351 2330 <br /> 169 North Halstead Street, Pasadena, California 91107-3127 FAX (818)568 9165 <br /> Matrix Spike (MS)/Matrix Spike Duplicate (MSD) <br /> FOR 8020 <br /> Date Performed 10/25/1993 <br /> QC Batch No o298G121 <br /> Lab Sample I D 93-10-161-15 <br /> I <br /> I <br /> Organic Sample MS MSD Spike MS MSD ACP ACP <br /> Compounds Result Result Result Amount % Rec % Rec RPD %MS RPD <br /> Benzene N D 146 179 16 9 86 106 2031 80-120 0-20 <br /> Toluene N D 134 144 150 89 96 719 80-120 0-20 <br /> Eth (benzene N D 227 23 6 26 87 91 389 80-120 0-20 <br /> & m-X lene N D 120 125 124 97 101 4 08 80-120 0-20 <br /> o-Xylene 08 385 40 43 88 91 3 82 80-120 0-20 <br /> Gasoline N D 860 890 1 1000 86 89 3 43 80-120 0-20 <br /> Surr % Rec 100 105 <br /> ACP% 80-120 80-120 <br /> i <br /> I <br /> Units ug/kg <br /> N D Not Detected <br /> RPD Relative Percent Difference <br /> ACP% Acceptable Range of Percent <br /> A Wholly Owned Subsidiary of <br /> The Converse Professional Group <br />