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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(5 10) 686%89
<br /> �l Analytical 819 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921-0100
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<br /> Mltteihauser Corporation x�mry f Client Project IDV 2168 01-001, Unocal/Tracy
<br /> x7901 Stoneridge Drive, Suite 123 Matrix Solid
<br /> ' iPleasanton, CA 94588
<br /> Attention R Marks/R Papler Work Order# 9502243-01-2 H Reported _ Feb 9, 1995
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<br /> ' QUALITY CONTROL DATA REPORT
<br /> Analyte: 1,2,4-Tnchloro 4-Chloro-3 Acenaphthene 4-Nitrophenol
<br /> ' benzene Methylphenoi
<br /> QC Batch#' MS0131958270EXA MS0131959270EXA MS0131958ZMEXA MS0131958270EXA
<br /> Analy Method: EPA 8270 EPA 8270 EPA 8270 EPA 8270
<br /> ' Prep Method: EPA 3550 EPA 3550 EPA 3550 EPA 3550
<br /> Analyst: E Manuel E Manuel E Manuel E Manuel
<br /> MS/MSD#: 9501F1701 95DIF1701 9501171701 9501F1701
<br /> ' Sample Conc.: N D N D N D N D
<br /> Prepared Date: 1/31/95 1/31/95 1/31/95 1/31/95
<br /> Analyzed Date: 2/1/95 2/1/9-5 2/1/95 2/1/95
<br /> Instrument I.D.#: F4 F4 F4 F4
<br /> ' Conc Spiked: 3300 pg/Kg 3300 ug/Kg 3300 pg/Kg 3300 Ng/Kg
<br /> Result: 2200 2100 2000 1800
<br /> MS% Recovery: 67 64 61 55
<br /> Dup. Result: 2400 2100 2100 1800
<br /> MSD% Recov.: 73 64 64 55
<br /> ' RPD: 87 00 49 00
<br /> RPD Limit: 0.50 0.50 0-5D 0-50
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<br /> LCS#: - - -
<br /> ' Prepared Date: - - - -
<br /> Analyzed Date: - -
<br /> ' Instrument I.D.#:
<br /> Conc. Spiked:
<br /> LCS Result: - - -
<br /> ' LCS % Recov.: - - -
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<br /> L[;$ 44142 22-147 47-145 DL-132
<br /> Control Limits
<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 antra analytical procedure ff
<br /> the recovery of analytes from the matrix spike does not fall within specifled control limits due to matrix
<br /> y Y Interference,the LCS recovery is to be used to validate the batch
<br /> Vickie Tague Clark *"MS=Matrix Spike,MSD=MS Duplicate,RPD Relative%Difference
<br /> ' Project Manager Page 2 of 3 9502243 MMM <9>
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