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I <br /> 1 <br /> D <br /> ABs <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 °/oREC RPD <br /> Analyte Result Limit Units Level Result %REC Lffmts RPD Lunit Notes <br /> Batch EF21201 -EPA 5030 <br /> Prepared&Analyzed 12-Jun-02 <br /> LCS(EF21201-BS1) <br /> Benzene 547 050 ugA 500 109 75-125 <br />' Toluene 529 0 50 500 106 75-125 <br /> Surrogate Dibromofluoromethane 522 500 104 75-725 <br /> ogate 12-Dtchloroethane-d4 518 500 104 62-139 <br />' agate Toluene-d8 520 „ 500 104 75-125 <br /> Surrogate 4-Bromofluorobenzene 520 5 00 104 75-125 <br /> Matrix Spike(E11'21201-MS1) Source E206008-01 Prepared&Analyzed 12-Jun-02 <br />' Benzene 5 59 050 ug/l 500 0 99 920 75-125 <br /> Toluene 5 41 050 '500 1 6 762 75-125 <br /> Surrogate Dibromofluoromethane 558 5 00 112 75-125 <br />' Surrogate 12-Dichloroethane-d4 577 Soo 115 62-139 <br /> Surrogate Toluene-d8 5 13 500 103 75-125 <br /> Surrogate 4-Bromofluorobenzene 5 12 500 102 75425 <br />' Matrix Spike Dup(F-F21201-MSD1) Source E206008-01 Prepared&Analyzed 12-Jun-02 <br /> Benzene 567 050 ug/l 500 099 93 6 75-125 1 42 20 <br /> Toluene 592 050 500 16 86 4 75-125 900 20 <br /> ' Surrogate Dibromofluoromethane 548 „ 500 110 75-125 <br /> Surrogate 1 2-Dichloroethane-d4 566 5 00 113 62-139 <br /> Surrogate Toluene-d8 532 500 106 75-125 <br /> Surrogate 4-Bromof7uorobenzene 510 500 102 75-125 <br /> ' Page 17 of 19 <br />