Laserfiche WebLink
Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget 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 /> 1455 McDowell Blvd North,Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> ' &-Flyan=btiblin y " `Cl1ent'P"ro1ectl0 - Unocaf SS#0t87, Stockton,AW <br /> "6747 Sierra Court, Suite J Matnx Liquid <br /> h Dublin, CA 94568 <br /> n Attention Deanna Harding QC Sample Group 9020651-668 Reported Feb 16, 1999 ; <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method EPA 8024 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst C Westwater C Westwater C Westwater C Westwater <br /> MS/MSD <br /> Batch# 9020225 9020225 9020225 9020225 <br /> Date Prepared 2/10/99 2/10/99 2/10/99 2/10/99 <br /> Date Analyzed 2/10/99 2/10/99 2/10/99 2/10/99 <br /> Instrument I D # HP-5 HP-5 HP-5 HP-5 <br /> Conc. Spiked 20yg/L 20Ng/L 20ug/L 60ug/L <br /> Matrix Spike <br /> % Recovery 90 95 95 97 <br /> • Matrix Spike <br /> Duplicate % <br /> Recovery 95 95 95 100 <br /> Relative % <br /> Difference 54 00 00 34 <br /> LCS Batch# 5LCS021099 5LCS021099 5LCS021099 5LCS021099 <br /> Date Prepared 2/10/99 2/10/99 2/10/99 2/10/99 <br /> Date Analyzed 2/10/99 2/10/99 2/10/99 2/10/99 <br /> Instrument I D #- HP-5 HP-5 HP-5 HP-5 <br /> LCS % <br /> Recovery 95 100 100 102 <br /> Recovery <br /> Control Limits. 70-130 70-130 70-130 70.130 <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, #9271 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 /> ullanne Fegley interference,the LCS recovery is to be used to validate the batch <br /> Project Manager <br /> 9020651 GET <23> <br /> s� <br />