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tSequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> [9Q0 Bates Avenue Suite L Concord CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> 819 Straker Avenue Suite 8 Sacramento CA 95834 (916) 92t 96Q0 FAX(9E6)92E 0100 <br /> Analytical <br /> RESNA Client Project ID 150070 01, Chase Chevrolet <br /> 1710 Main Street Matrix Solid <br /> tEscalon, CA 95320 <br /> Attention Greg Stahl CC Sample Group 4P37901-02 Reported Jun 17, 1994. <br /> ' DUALITY CONTROL DATA REPORT <br /> ' ANALYTE Diesel <br /> Method EPA 8015 <br /> Analyst A Nagra <br /> I <br /> MS/MSD <br /> Batch#: 41739702 <br /> Date Prepared- 6/8/94 <br /> Date Analyzed* 6/13/94 <br /> Instrument LD#. GCHP-5 <br /> Conc Spiked 15 mg/kg <br /> Matrix Spike <br /> % Recovery: - <br /> Matrix Spike <br /> ' Duplicate% <br /> Recovery <br /> Relative% <br /> ' Difference <br /> ' LCS Batch# BLK060894 <br /> ' Date Prepared 6/8/94 <br /> Date Analyzed: 6/13/94 <br /> Instrument I.D#: GCHP-5 <br /> ' LCS% <br /> Recovery: 73 <br /> I <br /> ' % Recovery <br /> Control Limits: 38-122 <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 matrix spike is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure If <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> Vickie Tague Clark <br /> ' Project Manager 4F37901 WAT c10> <br />