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' 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233
<br /> Sequoia 404 N Wlget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673
<br /> 819 Striker Avenue Suite B Sacramento.CA 95834 (916)921-9600 FAX(916)921-0100
<br /> Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)79Z-1865 FAX(707)792-0342
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<br /> e er16yan -balin Client Project 7t) Unocal SS#0187, Stockton {r
<br />' 6747 Sierra Court, Suite J Matrix Liquid
<br /> Dublin, CA 94568 v
<br /> Attention. Deanna Harding QC Sample Group 9020651-668 Reported Feb 16, 1999
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<br /> QUALITY CONTROL DATA REPORT
<br />' ANALYTE Calcium Copper Iran Magnesium Mangasene Sodium Zinc
<br />' Method: EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7
<br /> Analyst: J Kelly J Kelly J Kelly J Kelly J Kelly J Kelly J Kelly
<br />' MS/MSD
<br /> Batch#: 9020652 9020652 9020652 9020652 9020652 9020652 9020652
<br />' Date Prepared. 2/8/99 2/8/99 2/8/99 2/8/99 2/8/99 2/8/99 2/8/99
<br /> Date Analyzed: 2/12/99 2/12/99 2/12/99 2/12/99 2/12/99 2/12/99 2/12/99
<br /> Instrument I.D.#: MV-4 MV-4 MV-4 MV-4 MV-4 MV-4 MV-4
<br />' Conc. Spiked. 10 mg/L 1 0 mg/L 1 0 mg/L 10 mg/L 10 mg/L 1 0 mg/L 10 mg/L
<br /> Matrix Spike
<br /> % Recovery: - 98 90 so 108
<br /> Matrix Spike
<br /> Duplicate%
<br />' Recovery: * 98 so 10 * 108
<br /> Relative%
<br /> Difference: 95 00 4 9 95 91 11 00
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<br />' LCS Batch#: LCS0208998 LCS0208998 LCS0208998 LCS020899B LCS020899B LCS0208998 LCS0208998
<br /> Date Prepared: 2/8/99 2/8/99 2/8/99 2/8/99 2/8/99 2/8/99 2/8/99
<br /> Date Analyzed: 2/12/99 2/12/99 2/12/99 2/12/99 2/12/99 2/12/99 2/12/99
<br /> Instrument I.D.#: MV-4 MV-4 MV-4 MV-4 MV-4 MV-4 MV-4
<br />' LCS %
<br /> Recovery: 97 97 100 100 100 100 100
<br />' Recovery
<br /> Control Limits: 80-120 80-120 80-120 80-120 80.120 80-120 80-120
<br />' Please Note
<br /> The LCS is a control sample of known,Interferent free matrix that is analyzed using the same reagents,
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<br /> A FANALYTICAL,#1271 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 /> WpVtthe recovery of analytes from the matrix spike does not fall within specified control limits due to matrix
<br /> Interference,the LCS recove is to be used to validate the batch
<br /> e egley *Value undeterminable due to matrix Interference and/or concentration in samp a
<br />' Project Manager
<br /> 9020651 GET t28>
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