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a. <br /> I <br /> E <br /> SEQUOIA ANALYTICAL—SAC. 9169226160 P. 05 <br /> SEQUOIA ANALYTICAL <br /> 819 Striker Avenue Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921 0100 E <br /> Ernnr <br /> g onrnentai Consultants.� Clientrojei;t ii? sr�elf Seo W charter wAy,5tookron ` <br /> 1050 Melody lane, Ste 160 , <br /> Roseville, CA 95678 q <br /> �Attention SudhakarTaiankl QC Sample Group 3010116-17 Reported Jan 15 1993 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Et" <br /> Benzene Toluene Benzene Xylano$ <br /> Method EPA 8020 EPA 8020 EPA 8020 EPA 18020 <br /> Analyst C c4apman C Chapman C Chapman C Chepman <br /> Reporting Units mg/cubic m m8/cubic m mg/cubic m mg/cubic m <br /> Date Analyzed Jan 8, 1993 Jan a 1993 Jan 8, 1993 Jan 8, 1993 <br /> QC Sample # Mollo893 13LK010893 BLK010693 BLKO 0893 <br /> Sample Cone • N D N D N D N <br /> Spike Cone. <br /> Added: 20 20 20 40 <br /> Cone Matrix <br /> Splike- 17 is 18 35 <br /> Matrix Spike <br /> %Recovery: 65 90 90 88 <br /> Cone Matrix <br /> Spike Dup., is 19 1 9 37 <br /> Matrix Spike l <br /> Duplicate <br /> %Recovery. 90 95 95 92 <br /> Relative <br /> %Difference: 57 54 54 5 6 <br /> I <br /> i <br /> SQUOIA ANALYTICAL covery one of M 5 ,Cano of Sample x too <br /> (A/a/ <br /> 9pika no Added <br />