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D <br /> LrAnS <br /> ATC Associates Project ATC060302-31 <br />' 9620 Chesapeake Dr #203 Project Number 43 258270026/EZ Serve 100966 Reported <br /> San Diego CA,92123 Project Manager Mr Scott Levin 14-Jun-02 <br />' Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> HP Labs <br />' Reporting Spike Source %REC RPD <br /> Analyte Result L=t Units Level Result %REC Lznuts RPD Lirrut Notes <br />' Batch EF21101 -EPA 5030 <br /> Blank(EF21101-BLK1) Prepared&Analyzed 11-Jun-02 <br /> Tert-amyl methyl ether ND 10 ugA <br />' Tert-butyl alcohol ND 50 <br /> Di-isopropyl ether ND 1 0 <br /> 1 tart-butyl ether ND 10 <br /> " <br /> 'yl tent-butyl ether ND 10 <br /> Dtchloroethane ND 10 <br /> 1,2-Dbromoethane(EDB) ND 1 0 " <br /> Surrogate Drhromofluoromethane 547 500 109 75-125 <br />' Surrogate 1 2 Dichloroethane-d4 552 500 110 62-139 <br /> Surrogate Toluene-d8 527 500 105 75-125 <br /> Surrogate 4-11romofluoroben2ene 529 500 106 75-125 <br />' LCS(EF21101-BS1) Prepared&Analyzed 11-Jun-02 <br /> Benzene 5 65 050 ugA 500 113 75-125 <br /> Toluene 552 0 50 500 110 75-125 <br />' Surrogate Dtbromofluoromethane 5 43 Soo 109 75-115 <br /> Surrogate 12-Dtchloroethane-d4 5 73 500 115 62-139 <br /> Surrogate Toluene-d8 528 500 106 75-125 <br />' Surrogate 4-Bromofluorobenzene 539 5 00 108 75-125 <br /> Matrix Spike(EF21101-MSI) Source E206007-09 Prepared&Analyzed 11-Jun-02 <br /> Benzene 636 0 50 ug/l 500 ND 127 75-125 QM-07 <br />' Toluene 528 050 500 ND 102 75-125 <br /> Surrogate Dibromofluorornethane 5 61 500 112 75-125 <br /> Surrogate 1 2-Dtchloroethane-d4 590 500 118 62-139 <br /> Surrogate Toluene-d8 526 „ 500 105 75-125 <br /> Surrogate 4-Bromofluorobenzene 526 Soo 105 75-125 <br />' Page 15 of 19 <br />