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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 FAX (415) 364-9233 <br /> RESNA Client Project IDY 054006 06, Coca Cola Stockton <br /> 1710 Main Street Matra Liquid <br /> ' EsCA 95320 Y 1 n V N 4 <br /> Attention <br /> n Jeanne Hornsey QC Sample Group 3KH2101-2 Reported Dec 2, 1993 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method: EPA 8020 EPA 6020 EPA 8GX EPA 8020 <br /> 1 Anal st' M Nipp M Nipp M Nipp M NiPP <br /> MS/MSD <br /> ' Batch#: 3KE3602 3KE3602 3KE3602 3KE3602 <br /> Date Prepared: - <br /> Date Analyzed: 11/30/93 11/30/93 11/30/93 11/30/93 <br /> ' Instrument 1 D.#: GCHP-17 GCHP-17 GCHP-17 GCHP-17 <br /> Conc Spiked. 10pg/L 10pg/L 10pg/L 30pg/L <br /> Matrix Spike <br /> 6 % Recovery, 100 100 100 100 <br /> Matrix Spike <br /> ' Duplicate% <br /> Recovery: 100 100 100 100 <br /> Relative% <br /> ' Difference: 00 00 00 00 <br /> LCS Batch#• <br /> ' Date Prepared. <br /> Date Analyzed: <br /> Instrument I D.#: <br /> ' LCS % <br /> Recovery: - - - _ <br /> ' % ecovery <br /> Control Limits: 55-145 47-149 47-155 56-140 <br /> ' Please Note <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> EDUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> I A� fortified with known quantities of specific compounds and subjected to the entire analytical procedure M <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 <br /> Project Manager 3KH2101 WAT <2> <br />