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Sequoia 680 Chesapeake Drive Redwood City CA 94053 (650)364-9600 FAX(650)364-9233
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<br /> 404 N Wlget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673
<br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834' (916)921-9600 FAX(916)921-0100
<br /> I455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342
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<br />' Cett]er--pyan -nu lin Client Prolect 0 Unocal SS#0187, Stockton
<br /> P 6747 Sierra Court, Suite J Matrix Liquid '
<br /> Dublin, CA 94568
<br /> Attention. Deanna Harding QC Sample Group 9020651-668 Reported Feb 16, 1999 '
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<br /> QUALITY CONTROL DATA REPORT
<br /> ANALYTE Specific Total Dissolved Hardness Chloride Dissolved Organic
<br />' Conductance Solids as CaCO3 Carbon
<br /> Method- EPA 120 1 EPA 160 1 EPA 130 2 EPA 300 0 EPA 4151
<br /> Analyst: K Anderson K Anderson F Allotey K.Anderson -
<br /> MS/MSD
<br /> Batch#: 9020661 9020606 9020606 9020659 9020129
<br /> Date Prepared: 2/5/99 2/8/99 2/9/99 2/7/99 2/10/99
<br /> Date Analyzed: 2/5/99 2/9/99 2/9/99 2/7/99 2/10/99
<br /> Instrument I.D.#: Manual Manual Manual 1NIC-1 -
<br /> Conc. Spiked: 1400 umhos/cm 1000 mg/L 1000 mg/L 200 mg/L 100 mg/L
<br /> Matrix Spike
<br /> ft % Recovery' 100 90 99 100 103
<br /> Matrix Spike
<br /> Duplicate %
<br />' Recovery: 100 90 99 100 105
<br /> Relative %
<br /> .. Difference: 00 00 0 0 00 ry` 19
<br /> LCS Batch#. LCS020599 LCS020899 LCS020999 LCS020799B LCS021099
<br />' Date Prepared. 11/23/98 2/8/99 2/9/99 2/6/99 2/10/99
<br /> Date Analyzed: 2/5/99 2/9/99 2/9/99 2/7/99 2/10/99
<br /> Instrument LD #: Manual Manual Manual INIC-1 -
<br />' LCS %
<br /> Recovery: 100 98 99 100 109
<br />' Recovery
<br /> Control Limits: 80-120 80-120 50-120 80-120 80-120
<br /> Please Note
<br /> The LCS 13 a control sample of known,Interferent free matrix that is analyzed using the same reagents,
<br /> QUQIA ANALYTICAL,#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 /> 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 /> uflanne Fegley
<br />' Project Manager
<br /> 9020651 GET .427>
<br /> atz
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