Laserfiche WebLink
Sequoia 680 Chesapeake <br /> hesaake Dc a Pedwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N W1 et Walnut Geek CA 94598 (925)98&9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramersto CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Stud North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> s4 -. q4�v .� vv v Fs k�n�w+k� HLrvM'rjCv <br /> 1G_ettl&F-Aiiil b-616 �Am m�wuCiient i��o�ec Ifs""Unaca!'SS#5098;Stockton w`"`` A �` <br /> 47 Sierra Court, Sude J Matrix. Liquid <br /> .blin, CA 94568 ' <br /> Attention Deanna Harding QC Sample Group 9061562-579 Reported. Jun 30, 1999'3 <br /> '�u',.'�i r <br />' QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> M ethod EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst J Minkel J Minkel J Minkel J Minkel <br /> MS/MSD <br /> Batch# 9061543 9061543 9061543 9061543 <br /> Date Prepared 6/25/99 6/25/99 6/25/99 6/25/99 <br /> Date Analyzed 6/25/99 6/25/99 6/25/99 6/25/99 <br />'instrument I D # HP-4 HP-4 HPA HP-4 <br /> Conc Spiked 20yg/L 20pg/L 20ug/L 60pg/L <br /> Matrix Spike <br /> %Recovery 90 80 90 tae <br /> Matrix Spike <br /> Duplicate % <br /> Recovery 90 Bo 90 103 <br /> Relative % <br /> Difference 00 Go 00 16 <br /> LCS Batch# 4LCS062599 4LCS062599 4LCS062599 4LCS062599 <br /> ' Date Prepared 6/25/99 6/25/99 5/25/99 6/25/99 <br /> Date Analyzed 6/25/99 6/25/99 6/25/99 6/25/99 <br /> ' Instrument I D # HP 4 HP4 HP 4 HP-4 <br /> LCS % <br /> Recovery 100 85 85 100 <br /> % Fiecovery <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, #1271 preparatzon,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 /> a<�i_ the recovery of analytes from the matrix spike does not tall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> anne Fegley <br /> Project Manager <br /> � 9061562GET <10> <br />