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r <br /> ' Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Bates Avenue Suite L Concord,CA 94520 (510) 686 9600 FAX (510)686 9689 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> RESIdA Client Project ID 150070 01, Chase Chevrolet v v <br /> 1710 Main Street Matrix Liquid <br /> Escalon, CA 65320 <br /> Attention GreStahl <br /> g OC Sample Group 4F33301 Reported Jun 20, 1994 <br /> r r h r <br /> � t • r n r ti n . ♦ v v Y 3 � 'r: {z rtitin i ti v nr li n +�•+� v tinwr++- <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE 1,1-Dichloro- Trlchloro- Chtoro- <br /> ethene ethane benzene <br /> Method EPA 8010 EPA 8010 EPA 8010 <br /> ' Analyst J Miller J Miller J Miller <br /> MS/MSD <br /> Batch#: 4F61501 4F61501 4F61501 <br /> Date Prepared- 6/14/94 6/14/94 6/14/94 <br /> Date Analyzed: 6/14/94 6/14/94 6/14/94 <br /> ' Instrument I.D#: GCHP-9 GCHP-9 GCHP-9 <br /> Conc.Spiked 25ug/L 25,ug/L 25ug/L <br /> Matrix Spike <br /> % Recovery 108 108 104 <br /> Matrix Spike <br /> ' Duplicate% <br /> Recovery: 88 92 64 <br /> Relative% <br /> ' Difference. 20 16 21 <br /> r t <br /> LCS Batch# - <br /> ' Date Prepared. <br /> Date Analyzed- <br /> Instrument l.D# - - <br /> ' LCS% - <br /> Recovery: <br /> ' °N6 ecovery <br /> Control Limits- 28-167 35-146 38-150 <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 1s an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure tf <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 4F33301 WAT <6> <br />