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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 - FAX (916) 921-0100 <br /> r=RM-West Client Project In #653 20, Santa Pe <br /> 2001 P Street, Suite 200 Matrix Water <br /> Sacramento, CA 95814 <br /> Attention Shannon Sadler QC Sample Group 3050542-44 Reported May 27, 1993 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE ' <br /> Diesel Oil&Grease <br /> Method. EPA 8015 Mod SM 5520 BF <br /> Analyst. Chiaravalloti N Valdes <br /> Concentration <br /> Spiked: 300 13 <br /> LCS Batch#: BLK052593 BLK052193 <br /> Date Prepared. 5/25/93 5/21/93 <br /> Date Analyzed 5/26/93 5/24/93 <br /> Instrument LD # HP-3 Inj B 61-412 <br />. LCS % <br /> Recovery 107 as <br /> Control Limits 75-125 75-125 <br /> MS/MSD <br /> Batch# BLK052593 BLK052193 <br /> Date Prepared 5/25/93 5/21/93 <br /> Date Analyzed 5/26/93 5/24/93 <br /> Instrument 1 D # HP-3 Inj B 61-412 <br /> Matrix Spike <br /> % Recovery 107 85 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery 107 85 <br /> Relative% <br /> Difference 00 00 <br /> Please Note <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL preparation and analytical methods employed for the samples The LCS%recovery data is used for <br /> validation of sample batch results Due to matrix effects,the OC limits for MS/MSD's are advisory only <br /> L� arnan&u) and are not used to accept or reject batch results <br /> Wendy Amundsen <br /> Laboratory Director 3050542 ERS .43> <br />