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C aceu <br /> P p P o R b r E o ® REPORT OF LABORATORY ANALYSIS <br /> + THE ASSURANCE OF DUALITY ' <br /> Mr. Markus Niebanck QUALITY CONTROL DATA August 09, 1993 <br /> Page 35 PACE Project Number: 430727510 <br /> LClient Reference: 7-226 <br /> {L VOLATILE ORGANICS, EPA METHOD 624` GC/MS <br /> Batch: 70 23245 �' <br /> Samples: 70 0121442, 70 0121450, 70 0121469 <br /> METHOD BLANK: <br /> Method <br /> Parameter Units MDL Blank <br /> ro�or—m ug/L S-- NIT— <br /> Xylene(s) Total ug/L. 5 ND <br /> Styrene ug/L 5 ND <br /> 1,1,2,2,-Tetrachloroethane ug/L 5 ND <br /> 1,3-Dichlorobenzene ug/L 5 ND <br /> 1,4-Dichlorobenzene ug/L 5 ND <br /> L <br /> 1,2-Dichlorobenzene ug/L 5 ND <br /> 1,2-Dichloroethane-d4 (Surrog. Recovery 97% <br /> LToluene-d8 (Surrogate Recovery) 96% <br /> 4-Bromofluorobenzene (Surrog.Recdvery) 107% <br /> , LABORATORY CONTROL SAMPLE AND CONTROL SAMPLE, DUPLICATE: <br /> Reference Dupi <br /> Parameter Units MDL Value Recv Recv RPD <br /> 1,1-Dichloroethene ug/L. 50 967. 102% 6% <br /> Benzene ug/L 15 50 96% 100%- 4% <br /> Trichloroethene (TCE) ug/L 5 50 90% 88% 2% <br /> LToluene ug/L. 5 50 92% 94% 2% <br /> Chlorobenzene ug/L. 5 50 92% 94% 2% <br /> k <br /> 1 S Digital Drive An Equal opportunity Employer <br /> Novato,CA 94949 <br /> TEL:415-883.6100 <br /> LFAX:415.883.2613 <br />