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• • Report Number 3�3 <br /> QC Report • Matrix Spike/Matrix Spike Duplicate Date 7/7/2003 <br /> Project Name 2494 Fremont Street, <br /> Project Number 030514-JB1 <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 33233-05 <0 50 401 400 39 3 390 ug/L EPA 82608 5124103 980 97 4 0 614 70-130 25 <br /> Toluene 33233-05 <0 50 401 400 38 8 38 8 ug/L EPA 8260B 5124103 969 96 9 00258 70-130 25 <br /> Tert-Butanol 33233-05 <5 0 200 200 199 196 ug/L EPA 8260B 5124103 99 2 982 1 03 70-130 25 <br /> Methyl-t-Butyl Ether 33233-05 <0 50 401 400 41 5 405 ug/L EPA 82606 5124103 104 101 237 70-130 25 <br /> Benzene 33275-08 098 400 400 427 425 ug/L EPA 8260B 5127103 104 104 0 504 70-130 25 <br /> Toluene 33275-08 <0 50 400 400 398 394 ug/L EPA 8260B 5127103 996 984 121 70-130 25 <br /> Tert-Butanol 33275-08 <5 0 200 200 179 181 ug/L EPA 8260B 5127/03 893 90 5 128 70-130 25 <br /> Methyl-t-Butyl Ether 33275-08 <0 50 400 400 316 312 ug/L EPA 82606 5/27103 79 0 780 130 70-130 25 <br /> Benzene 33211-03 <0 50 400 400 396 394 ug/L EPA 8260B 5122103 990 98 6 0 506 70-130 25 <br /> Toluene 33211-03 <0 50 400 400 407 403 ug/L EPA 8260B 5122103 102 101 106 70-130 25 <br /> Tert-Butanol 33211-03 <50 200 200 208 205 ug/L EPA 8260B 5/22103 104 102 124 70-130 25 <br /> Methyl-t-Butyl Ether 33211-03 <0 50 400 400 45 4 451 ug/L EPA 8260B 5122103 114 113 0 817 70-130 25 <br /> Benzene 33226-21 <0 50 400 400 370 36 7 ug/L EPA 82606 5121103 92 6 916 106 70-130 25 <br /> Toluene 33226-21 <0 50 400 400 39 3 389 ug/L EPA 82606 5/21103 982 97 2 107 70-130 25 <br /> Tert-Butanol 33226-21 <5 0 200 200 196 190 ug/L EPA 82606 5121103 982 951 3 12 70-130 25 <br /> Methyl-t-Butyl Ether 33226-21 9 5 400 400 451 46 0 ug/L EPA 8260B 5121103 89 0 91 1 230 70-130 25 <br /> Benzene 33236-02 <0 50 400 400 388 376 ug/L EPA 8260B 5122103 971 939 332 70-130 25 <br /> Toluene 33236-02 <0 50 400 400 408 394 ug/L EPA 82606 5122/03 102 98 6 342 70-130 25 <br /> �4d q — <br /> Approved By J I Kif# <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />