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ace <br /> o R P o R a r E o REPORT OF LABORATORY ANALYSIS <br /> THE ASSUaVICE OF QUALITY <br /> Mr. Markus Niebanck QUALITY CONTROL DATA August 09, 1993 <br /> Page 37 PACE Project Number: 430727510 <br /> Client Reference: 7-226 <br /> VOLATILE ORGANICS, EPA METHOD 624 GC/MS <br /> Batch: 70 23353 <br /> Samples: 70 0121477, 70 0121485 <br /> L <br /> METHOD BLANK: Method <br /> LNOParameter Units MDL Blank <br /> BromoTo'rm ug 5- <br /> Xylene(s) Total ug/L 5 NO <br /> Styrene ug/L 5 - NO <br /> 1,1,2,2,-Tetrachloroethane ug/L- 5 ND <br /> 1,3-Dichlorobenzene ug/L` 5 NO <br /> 1,4-Dichlorobenzene ug/L 5 NO <br /> 1,2-Dichlorobenzene ug/L 5 NO <br /> • <br /> 1,2-Dichloroethane-d4 (Surrog. Recovery 96% <br /> Toluene-d8 (Surrogate Recovery) 99% <br /> 4-Bromofluorobenzene (Surrog.Recovery) 103% <br /> l <br />' L LABORATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE: <br /> Reference Dupl <br /> LParameter Units MDL Value Recv Recv RPD <br /> 1,1-DicFCoroethene ug/L 5 50 86 887. 2% <br /> k Benzene ug/L 5 50 84% 88%. 4% <br /> Trichloroethene (TCE) ug/L 5 50 82% 84% 2% <br /> Toluene ug/L 5 50 84% 86% 2% <br /> Chlorobenzene ug/L 5 50 84% 86% 2% <br /> 11 Digital Drive An Equal Opportunity Employer <br /> 1 Novato, CA 94949• <br /> TEL: 415.883-8100 <br /> FAX:415.893.2673 <br />+ it <br />