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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> OERM-West Client Project ID Santa Fe/Stockton <br /> 2001 P Street, Suite 200 <br /> Sacramento, CA 95814 <br /> Attention Shannon Sadler CIC Sample Group 3030128-28 Reported Mar 11, 1993 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Diesel <br /> EPA <br /> Method 8015 Mad <br /> Analyst Chiaravalioti <br /> Reporting Units ug/L <br /> Date Analyzed Mar 10, 1993 <br /> GSC Sample# BLK030993 <br /> I <br /> Sample Cone.: N D <br /> Spike Cone <br /> • Added- 300 <br /> Cone Matrix <br /> Spike 310 <br /> Matrix Spike <br /> %Recovery 103 <br /> Cone Matrix <br /> Spike Dup . 320 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 107 <br /> Relative <br /> %Difference 32 <br /> •SECUQIA ANALYTICAL %Recovery Cone of M S -Cone of Sample x 100 <br /> Spike Conc Added <br /> Relative%Difference Cone of M 5 -Cone of MSD x 100 <br /> Michael R Giles (Cone of M S + Cone of M S D)/2 <br /> Laboratory Director 3030126 ERS <2> <br />