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f r r r r r r r r r r it r r r iir r r r r <br /> Report Number 37706 <br /> QC Report. Matrix Spike/Matrix Spike Duplicate Date 04/09/2004 <br /> Project Name San Joaquin Co. Parking Garage <br /> Project Number <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <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 /> Benzene 37706-05 <0 0050 00395 00394 00340 00337 mg/Kg EPA 8260E 411104 862 856 0 641 70-130 25 <br /> Toluene 37706-05 <0 0050 00395 00394 00348 00345 mg/Kg EPA 8260B 411104 88 2 877 0 572 70-130 25 <br /> Tert-Butanol 37706-05 <0 0050 0198 0 197 0176 0169 mg/Kg EPA 8260B 411104 888 858 343 70-130 25 <br /> Methyl-t-Butyl Ether 37706-05 <0 0050 00395 00394 00354 00353 mg/Kg EPA 82606 411104 896 896 00463 70-130 25 <br /> KIFF ANALYTICAL, LLC Approved 8y Jo i{f <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />