Laserfiche WebLink
Sequoia ;0 Chesapeake Drive Redwood City,CA 94063 '.15) 364-9600 FAX(415) 364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 .510) 988-9600 FAX(510)988.9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX(916)921.0100 <br /> ko <br /> MPDS Services Client Project ID: Unocal #6015,601 E. Kettleman, Lodi <br /> 2401 Stanwell Dr., Ste. 300 Matrix: Liquid <br /> Concord, CA 94520 <br /> Attention: Sarkis Karkarian CC Sample Group: 5080469-73 Reported: Aug 15, 1995<i <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: K.Nill K.Nill K.Nill K.Nill <br /> MS/MSD <br /> Batch#: 5080469 5080469 5080469 5080469 <br /> Date Prepared: 8/11/95 8/11/95 8/11/95 8/11/95 <br /> Date Analyzed: 8/11/95 8/11/95 8/11/95 8/11/95 <br /> Instrument I.D.#: HP-4 HP-4 HP-4 HP-4 <br /> Cone.Spiked: 20ug/L 20ug/L 20pg/L 60ug/L <br /> Matrix Spike <br /> %Recovery: 75 90 100 100 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 75 85 95 97 <br /> Relative% <br /> Difference: 0.0 5.7 5.1 3.4 <br /> LCS Batch#: 2LCS081195 2LCS081195 2LCS081195 2LCS081195 <br /> Date Prepared: 8/11/95 8/11/95 8/11/95 8/11/95 <br /> Date Analyzed: 8/11/95 8/11/95 8/11/95 8/11/95 <br /> Instrument I.D.#: HP-4 HP-4 HP-4 HP-4 <br /> LCS % <br /> Recovery: 71 91 97 98 <br /> °%o 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 /> SIE*OUOIA 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 /> Signature on Fie 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 /> Alan B. Kemp <br /> Project Manager <br /> 5080469.MPD <3> <br />