Laserfiche WebLink
U <br /> • Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364.9600 FAX(415) 364-9233 <br /> 404 N.Wiget lane Walnut Creek,CA 94598 (510) 988.9600 FAX(510)988-9673 <br /> �„� Analytiea 819 Striker Avenue,Suite 8 Sacramento,CA 95834 <br /> (916) 921-9640 FAX(916)921-0100 <br /> < iSUS Services Client lsroject lb: Unocal#fidm66i E. Kettieman Lane;Lodi <br /> 2401 Stanwell Dr., Ste. 300 Matrix: Liquid <br /> Concord, CA 94520 <br /> Attention: Sarkis Karkarian OC Sample Group: 5031277-285 Reported: Apr 12, 1995::: <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst: A.Tuzon A.Tuzon A.Tuzon A.Tuzon <br /> MS/MSD <br /> Batch#: 5031622 5031622 5031622 5031622 <br /> Date Prepared: 4/6/95 4/6/95 4/6/95 4/6/95 <br /> Date Analyzed: 4/6/95 4/6/95 4/6/95 4/6/95 <br /> Instrument I.D.#: HP-5 HP-5 HP-5 HP-5 <br /> Conc. Spiked: 20 ug/L 20 ug/L 20 pg/L 60 yg/L <br /> Matrix Spike <br /> % Recovery: 90 93 93 97 <br /> • Matrix Spike <br /> Duplicate% <br /> Recovery: 80 65 85 90 <br /> Relative% <br /> Difference: 12 9.0 9.0 7.5 <br /> XX <br /> LCS Batch#: 3LCSO40695 31-CSO40695 3LCSO40695 3LCSO40695 <br /> Date Prepared: 4/6/95 4/6/95 4/6/95 4/6/95 <br /> Date Analyzed: 4/6/95 4/6/95 4/6/95 4/6/95 <br /> Instrument I.D.#: HP-5 HP-5 HP-5 HP-5 <br /> LCS % <br /> Recovery: 87 91 91 94 <br /> Recovery <br /> Control Limits: 71-133 72-128 72-130 71-120 <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, #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 /> ignature on File the recovery of analytes from the matrix spike does not tall within specified control limits due to matrix <br /> Alan B. Kemp interference,the LCS recovery is to be used to validate the batch. <br /> Project Manager <br /> 5031277.MPD <4> <br />