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 /> I� 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 747 792-1865 FAX 707 792-0342 <br /> owiy^� oN{bsrrr:� , ,.... .� ,. .. .. . ry .. . v ss . f, ` , 6" ;n rr , , ,... w�.w. ,.�s,s. <br /> er- yin- C"ubl1n' Ciient Project 10 Tosco (Unocai)'SS#6981, Stockton <br /> 4 6747 Sierra Court, Suite J Matrix Liquid <br /> z Dublin, CA 94568 <br /> s Attention Deanna Harding QC Sample Group 9011960-973 Reported Feb 18, 1999 <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 C Westwater C Westwater C Westwater C Westwater <br /> MS/MSD <br /> Batch# 9020611 9020611 9020611 9020611 <br /> Date Prepared 2/6/99 2/6/99 2/6/99 2/6/99 <br /> Date Analyzed 2/6/99 2/6/99 2/6/99 2/6/99 <br /> Instrument I D # HP-2 HP 2 HP 2 HP-2 <br /> Conc Spiked 20lrg/L 20Ng/L 20,ug/L 60Ng/L <br /> Matrix Spike <br /> % Recovery 90 90 95 103 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery 90 90 95 103 <br /> Relative% <br /> Difference 00 00 00 00 <br /> LCS Batch# 2LCS020699 2LCS020699 2LCS020699 2LCS020699 <br /> Date Prepared 2/6/99 2/6/99 2/6/99 2/6/99 <br /> Date Analyzed 2/6/99 2/6/99 2/6/99 2/6/99 <br /> Instrument I.D # HP-2 HP-2 HP 2 HP-2 <br /> LCS % <br /> Recovery, 90 90 90 103 <br /> ecovery <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 /> QUQ[A ANALYTICAL, #1271 preparation,and analytical methods employed for the samples The matrix spike Is an aliquot of sample <br /> 44 <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 recove Is to be used to validate the batch <br /> lianne Fegley <br /> Project Manager <br /> 9011960 GET <20> <br />