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0 0 Report Number 291 <br /> QC Report: Matrix Spike/Matrix Spike Duplicate Date 11/14/02 <br /> Project Name 880 Victor Road, Lodi <br /> Project Number 021030-JB1 <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> Spiked Sample Spike DUD 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 29499-02 <0 50 200 199 21 3 214 ug/L EPA 8260E 1118102 107 107 0 397 70-130 25 <br /> Toluene 29499-02 <0 50 200 199 209 210 ug/L EPA 82606 1118102 105 106 0 713 70-130 25 <br /> Tert-Butanol 29499-02 160 999 997 250 249 ug/L EPA 8260B 1118102 885 878 0 815 70-130 25 <br /> Methyl-t-Butyl Ether 29499-02 <0 50 200 199 207 203 ug/l. EPA 8260B 1118102 104 102 180 70-130 25 <br /> Benzene 29443-02 <0 50 400 400 428 419 ug/L EPA 82603 1111102 107 105 215 70-130 25 <br /> Toluene 29443-02 <0 50 400 400 440 433 ug/L EPA 8260B 11/1102 110 108 156 70-130 25 <br /> Tert-Butanol 29443-02 14 200 200 228 225 ug/L EPA 8260B 1111102 107 106 140 70-130 25 <br /> Methyl-t-Butyl Ether 29443-02 11 400 400 537 541 ug/L EPA 8260B 1111102 106 107 0 963 70-130 25 <br /> Benzene 29458-11 <0 50 400 400 405 360 ug/L EPA 8260B 1114102 101 900 118 70-130 25 <br /> Toluene 29458-11 <0 50 400 400 45 4 401 ug/L EPA 82606 1114102 113 100 123 70-130 25 <br /> Tert-Butanol 29458-11 <50 200 200 208 188 ug/L. EPA 8260B 1114102 104 942 990 70-130 25 <br /> Methyl-t-Butyl Ether 29458-11 30 400 40 0 672 631 ug/L EPA 82606 1114102 941 84 0 114 70-130 25 <br /> Benzene 29503-01 5 5 400 40 0 471 45 3 ug/L EPA 8260B 1118102 104 994 440 70-130 25 <br /> Toluene 29503-01 <0 50 400 400 428 415 ug/L EPA 82606 1118/02 107 104 294 70-130 25 <br /> Tert-Butanol 29503-01 <5 0 200 200 213 205 ug/L EPA 82606 1118102 107 102 393 70-130 25 <br /> Methyl-t-Butyl Ether 29503-01 <0 50 400 400 424 409 ug/L EPA 82606 11/8102 106 102 3 51 70-130 25 <br /> Benzene 29527-03 <0 50 400 400 422 405 ug/l. EPA 8260B 1115102 105 101 411 70-130 25 <br /> Toluene 29527-03 <0 50 400 400 441 422 ug/L EPA 8260B 1115102 110 106 438 70-130 25 <br /> l <br /> Approved KIFF ANALYTICAL, LLC By J I Ki <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />