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til r7 ' i!D-q4W <br /> Sequoia 680 Chesapeake Drive Redwood City 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Bates Avenue,Suite L Concord,CA 94520 (SIO) 686 9600 FAX(510)684%89 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> 'eA- --AI-I'"gC".r'u .4x""'R- -rn,,..w„3 xr+ om- ,y ca�`�Yc•v�,. .. --> <br /> +%OSrvN,in. '4 r <br /> 'h�i .-}w.�A�rv52k�.wnS'.2 �$h'.�S�.M��.e � p <br /> ��RESNA Cllerrt Prolect ID 380f}910, Stockton S 2 - < <br /> 1710 Main Street Matrix Liquid <br /> Escalon, <br /> CA 95320 <br /> Attention John Lane QC Sample Group 9410154 01-04 Reported 101 51 <br /> y ^mreh'b�^xar^'�C4a+�+,-^�•^s7.�wr x,. ;y�^;, !/ffacn<--fi� -,;,at'.o-ry�rSen�rain Y�t:�"s`�Ma"t'�ci'o•.��,a�a,mfs�nf <br /> .a,main'- '`as o-sycnsxxrN^>,S <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Alla FL Vincent Ft.Vincent R Vincent R Vincent <br /> MS/MSD <br /> Batch#: 9409E55W 9409E5505 9409E5505 94ME5505 <br /> Date Prepared: NA NA N.A. NA <br /> Date Analyzed: 10/4/94 10/4/94 10/4/94 10/4/94 <br /> Instrument I.D.#: GCHP17 GCHP17 GCHP17 GCHP17 <br /> Conc.Spiked: 10pg/L 10pg/L 10pg/L 30pg/L <br /> Matrix Spike <br /> %Recovery: 96 92 99 100 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 100 100 110 103 <br /> Relative% <br /> Difference: 4 1 83 11 30 <br /> LCS Batch#: - <br /> Date Prepared: <br /> Date Analyzed: <br /> Instrument I.D.#: <br /> LCS% <br /> Recovery: <br /> Recovery <br /> COrttrol Limits: 71-133 72-12S 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 preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> rtfied with known quantities of specific compounds and subjected to the entire analytical procedure U <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> kitederence,the LCS recovery is to be used to validate the batch <br /> Vickie Tague Clark 9409194 wAT �2� <br /> Project Manager <br />