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..I n rr, rr1 <br /> pace'10 <br /> O g p R A T E 0 REPORT OF LABORATORY ANALYSIS <br /> THE ASSURANCE OF QUALITY <br /> �1r. Bill Howell QUALITY CONTROL DATA October 19, 1993 <br /> (Page 14 PACE Project Number: 431008514 <br /> Client Reference: BP Station # 11193 <br /> VOLATILE HALOCARBONS AND AROMATICS <br /> Batch: 70 25521 <br /> Samples: 70 0169003 <br /> METHOD BLANK: <br /> Method <br /> Parameter Units MDL Blank <br /> 1 ,41 ,4Dichlorobutane (Surrogate Recovery) 108% <br /> VOLATILE AROMATICS BY EPA 8020 - <br /> Benzene ug/L 0.3 ND <br /> Toluene ug/L 0.3 ND <br /> Ethylbenzene ug/L 0.5 ND <br /> Xylenes, Total ug/L 0.5 ND <br /> Fluorobenzene (Surrogate Recovery) 97% <br /> LABORATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE: <br /> Reference Dupl <br /> AftParameter Units MDL Value Recv Recv RPD <br /> 1,1-Dic oroethane ug/L 0.5 20 1017o 87% 14% <br /> Trichloroethene (TCE) ug/L 0. 5 20 97% 101% 4% <br /> 1 ,1 ,2-Trichloroethane ug/L 0.5 20 94% 101% 7% <br /> Tetrachloroethene ug/L 0.5 20 96% 101% 5% <br /> Benzene ug/L 0.3 20 91% 96% 5% <br /> Toluene ug/L 0.3 20 91% 102% 11% <br /> Xylenes, Total ug/L 0.5 60 93% 96% 3% <br /> 11 Digital Drive An Equal Opportunity Employer <br /> Novato, CA 94949 <br /> TEL: 415.883-6100 <br /> FAX: 415883.2673 <br />