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Sequoia o80 C-1CSape3kc Dnvc 2eawood C ry CA 94063 4151 j64-9600 C X 411) 364-9233 <br /> 404 v %Mgrt Lane Walnut C-ccx CA 94598 {510) 988 9600 FAX'510)988-9673 <br /> analytical 3i9 Stnker Avenuc Sunt 3 Satratttenro CA 95834 19161 921 9600 FAX X9161 92t 0100 <br /> Delta cnvironmentaf Consultants Client Project ID Gaon 7-3708, Stockton <br /> 3330 Data Drive Matrix Liquid <br /> Rancho Cordova CA 95670 <br /> Attention Todd Galati Work Order 9504300 -08 Reported Apr 17 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Benzene Toluene E*hyl Xylenes <br /> Benzene <br /> QC SatCh#' GC0411958TEX17A GC341195STIX17A GC0411958TE(17A GC041195HTE(17A <br /> Analy Method =:'A 8020 EFAW20 ==A 8020 5=A 8020 <br /> Prep. Method ==A 5030 ESA 5030 ==A x030 ==A 5030 <br /> Analyst' J Mlnkef J Minkel J Minkel J MinKel <br /> MS/MSI] # G9504224-148 G9504224-048 ^39504224-048 GS506224-048 <br /> Sample Conic. u D N 0 N 0 ,N 0 <br /> ¢repared Date. 4/11/95 4/11/95 4/11/95 4/11/95 <br /> Analyzed Date 4/11/S5 4/11/95 4/11/95 4/11/95 <br /> Instrument I.D.m• C-CHF17 GCt-P17 GCHP17 GCHP17 <br /> Conc. Spiked. 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> Result: 10 12 11 34 <br /> MS % Recovery 100 120 110 113 <br /> Dup. Result. 11 11 11 33 <br /> MSE) Recov. 110 110 110 110 <br /> RPD 95 87 00 30 <br /> RPD Limit: 0-50 0-50 0-50 0-50 <br /> '^ " .. •. . t r . u f:C• s vw. i,. n tit }x+t }, li., v4 r t>Y f s f xry • X. .�. L <br /> LCS # <br /> Prepared Date: <br /> Analyzed Date: <br /> Instrument f.D.#-L <br /> Cone. Spiked- <br /> LCS Result. <br /> LCS °N. Recov.. <br /> LCS 71-133 72-128 72-130 71-120 <br /> Control Limits <br /> ease Note <br /> The LCS is a contral 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 aHquo#of sample <br /> fortrhed wrth known,quanvtzes of spectftc compounds and subjected to the entire analytical procedure If <br /> ff the recovery of analytes fmm the matrix spike does not fall within specified control Itmds due to rrtatnx <br /> / KM11 a Gregory <br /> interference the LCS recovery 1s to be used to validate me batch y <br /> Project Manager —MS-Mamx Spike,MSD-MS Duplicate,RFD-Relative%difference <br />