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Report Number: 40680 QC Report : Matrix Spike/Matrix Spike Duplicate Date : 11/1712006 Project Name: Ace Tomato Project Number: Duplicate Spiked Duplicate Spiked Spiked Sample Relative Spike Spiked Spiked Sample Sample Relative Percent Percent Spiked Sample Spike Dup. Sample Sample Analysis Date Percent Percent Percent Recov. Diff. Parameter Sample Value Level Level Value Value Units Method Analyzed Recov. Recov. Diff. Limit Limit TPH as Diesel 40680-02 <1.0 20.0 20.0 15.8 16.6 . mg/Kg M EPA 8015 10/26/04 79.0 82.9 4.87 60-140 25 TPH as Diesel Blank <50 1000 1000 927 998 ug/L. M EPA 8015 10/26/04 92.7 99.8 7.37 70-130 25 Benzene 40704-17 <0.0050 0.0398 0.0391 0.0406 0.0400 mg/Kg EPA 8260B 10/26/04 102 102 0.138 70-130 25 Toluene 40704-17 <0.0050 0.0398 0.0391 0.0377 0.0374 mg/Kg EPA 82606 10/26/04 94.8 95.5 0.748 70-130 25 Tert-Butanol 40704-17 <0.0050 0.199 0.196 0.185 0.180 mg/Kg EPA 8260B 10/26/04 93.0 91.9 1.26 70-130 25 Methyl-t-Butyl Ether 40704-17 <0.0050 0.0398 0.0391 0.0364 0.0365 mg/Kg EPA 82606 10/26/04 91.6 93.2 1.79 70-130 25 Benzene 40735-01 <0.50 40.0 40.0 41.2 38.4 ug/L EPA 82606 10/27/04 103 95.9 7.04 70-130 25 Toluene 40735-01 <0.50 40.0 40.0 42.8 39.8 ug/L EPA 8260E 10/27/04 107, 99.6 7.16 70-130 25 Tert-Butanol 40735-01 <5.0 200 200 199. 188 ug/L EPA 8260B 10/27/04 99.4 94.1 5.52 70-130 25 Methyl-t-Butyl Ether40735-01 <0.50 40.0 40.0 42.9 40.3 ug/L EPA 82606 10/27/04 107 101 6.43 70-130 25 Benzene 40676-02 <0.50 40.0 . 40.0 40.6 39.7 ug/L EPA 82606 10/27/04 101 99.2 2.26 70-130 25 Toluene 40676-02 <0.50 40.0 40.0 39.3 38.6 ug/L EPA 8260E 10/27/04 98.4 96.5 1.94 70-130 25 � Tert-Butanol40676-02 <5.0 200 200 193 196 ug/L EPA 82608 10/27/04 96.6 97.8 1.16 70-130 25 Methyl-t-Butyl Ether40676-02 60 40.0 40.0 109 108 ug/L . EPA 82606 10/27/04 121 118 2.94 70-130 25 Approved By: Jo iff KIFF ANALYTICAL, LLC 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800