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• 0 Report Number 34 <br /> QC Report • Matrix Spike/Matrix Spike Duplicate Date 4/22/2003 <br /> Project Name 2575 Country Club, <br /> Project Number 030410-BM1 <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 /> Tert-Butanol 32710-11 <5 0 200 200 211 213 ug/L EPA 82606 4/14103 105 106 106 70-130 25 <br /> Methyl-t-Butyl Ether 32710-11 <0 50 400 400 428 433 ugJL EPA 8260B 4114103 107 108 1 23 70-130 25 <br /> Benzene 32706-20 <0 50 400 400 408 38 2 ug/L EPA 8260B 4115103 102 956 6 55 70-130 25 <br /> Toluene 32706-20 <0 50 400 400 400 37 8 ug/L EPA 82606 4115103 100 94 4 5 81 70-130 25 <br /> Tert-Butanol 32706-20 <5 0 200 200 224 224 ug/L EPA 82606 4115103 112 112 00536 70-130 25 <br /> Methyl-t-Butyl Ether 32706-20 <0 50 400 400 471 46 1 ug/L EPA 8260B 4115103 118 115 215 70-130 25 <br /> Benzene 32773-02 <0 50 400 400 400 39 9 ug/L EPA 8260B 4121103 100 998 0200 70-130 25 <br /> Toluene 32773-02 <0 50 400 400 388 392 ug/L EPA 82606 4121103 970 979 0 872 70-130 25 <br /> Tert-Butanol 32773-02 <5 0 200 200 209 209 ug/L EPA 8260E 4/21/03 105 105 00286 70-130 25 <br /> Methyl-t-Butyl Ether 32773-02 18 400 400 437 448 ug/L EPA 82606 4/21103 105 108 273 70-130 25 <br /> Benzene 32738-05 <0 50 400 400 387 375 ug/L EPA 82606 4118103 96 8 938 312 70-130 25 <br /> Toluene 32738-05 <0 50 400 400 391 381 ug/L EPA 82606 4118/03 977 952 2 57 70-130 25 <br /> Tert-Butanol 32738-05 <5 0 200 200 199 201 ug/L EPA 82606 4118103 994 101 138 70-130 25 <br /> Methyl-t-Butyl Ether 32738-05 <0 50 400 400 38 7 38 0 ug/L EPA 82606 4118/03 967 950 180 70-130 25 <br /> I <br /> Approved By J 1 Kiff <br /> KIPF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />