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Report Number : 76642 <br /> QC Report: Matrix Spike/ Matrix Spike Duplicate Date : 03/08/2011 <br /> Project Name : City of Manteca UST Removal <br /> Project Number: 9041.01 P <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative I <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> Spiked Sample Spike Dup. Sample Sample Analysis Date Percent Percent Percent Recov. Diff. <br /> Parameter Sample Value Level Level Value Value Units Method Analyzed Recov. Recov. Diff. Limit Limit <br /> 1,3-Dichlorobenzene <br /> 76642-04 <0.0050 0.0389 0.0389 0.0216 0.0265 mg/Kg EPA 8260B 3/7/11 55.6 68.2 20.3 52.5-132 25 <br /> 1,4-Dichlorobenzene I <br /> 76642-04 <0.0050 0.0389 0.0389 0.0227 0.0273 mg/Kg EPA 8260B 3!7/11 58.3 70.1 18.3 57.0-123 25 <br /> Benzene <br /> 76642-04 <0.0050 0.0389 0.0389 0.0346 0.0367 mg/Kg EPA 8260B 3/7/11 88.8 94.4 6.07 67.9-120 25 I <br /> Bromodichloromethane <br /> 76642-04 <0.0050 0.0389 0.0389 0.0349 0.0373 mg/Kg EPA 8260B 3/7/11 89.6 95.8 6.63 70.0-130 25 <br /> Bromoform <br /> 76642-04 <0.0050 0.0389 0.0389 0.0365 0.0400 mg/Kg EPA 8260B 3/7/11 93.7 103 9.35 58.2-146 25 <br /> Bromomethane <br /> 76642-04 <0.020 0.194 0.194 0.177 0.171 mg/Kg EPA 8260B 3/7/11 91.1 87.9 3.54 45.5-139 25 <br /> Carbon Tetrachloride <br /> 76642-04 <0.0050 0.0389 0.0389 0.0342 0.0374 mg/Kg EPA 8260B 3/7/11 87.9 96.2 8.99 70.0-130 25 <br /> Chlorobenzene <br /> 76642-04 <0.0050 0.0389 0.0389 0.0305 0.0345 mg/Kg EPA 8260B 3/7/11 78.4 88.6 12.2 63.4-122 25 <br /> Chloroethane I <br /> 76642-04 <0.0050 0.0389 0.0389 0.0384 0.0351 mg/Kg EPA 8260B 3/7/11 98.6 90.2 8.81 70.0-130 25 <br /> Chloroform <br /> 76642-04 <0.0050 0.0389 0.0389 0.0342 0.0363 mg/Kg EPA 8260B 3/7/11 87.9 93.2 5.82 67.4-121 25 <br /> a <br /> m <br /> N <br /> A <br /> O <br /> W <br /> W <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />