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- \ Sequoia 080 Chesapeake Drive Redwood City,CA 94063.415) 364.9600 FAX(415)364-9233 <br /> 404 N.Wiget Lane Walnut Creck,CA 94598 (510) 988.9600 FAX(510)988-9673 <br /> X117 Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 <br /> FAX(916)921.0100 <br /> Kleinfeldef a l .-..,. -:0-::m. <br /> 2825 East Myrtle I. <br /> Matrix: <br /> profect7D< 20 978-01.M4 <br /> Stockton, CA 95205 a Water <br /> Attention: TonMartin <br /> P <br /> Y QC Sample Group 7081107-1109, 1120 <br /> Reported: Sep 4, 1 7 <br /> s3.�:.'�e�z::si:�� £�''i.F•a„":w��S.a' MS�iz�:,ze4^'i'xa-�x� ;;...w, ::,...,:,..�:...,: 99 ° <br /> •. "&xa<1`�3<?;°L..,:ekk:'.G".c<'x�'seGa"aa:�;2.�u'.F.<ot,o,k:«&<fae"k"'S£t£�i°a�:G.0-"a`.ka":a;$%i3ii.�3'a "eT^a <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst: S.Phillips S.Phillips S.Phillips S.Phillips <br /> Concentration <br /> Spiked: 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> LCS Batch#: LCS082997 LCS082997 LCS082997 LCS082997 <br /> Date Prepared: 08/29/97 08/29/97 08/29/97 08/29/97 <br /> Date Analyzed: 08/29/97 08/29/97 08/29/97 08/29/97 <br /> Instrument I.D.#: GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> �. LCS % <br /> Recovery: 100 94 93 93 <br /> Control Limits: 70-130 7D-130 70-130 70-130 <br /> MS/MSD <br /> Batch#: 7081120 7081120 7081120 7081120 <br /> Date Prepared: 08/29/97 08/29/97 08/29/97 08/29/97 <br /> Date Analyzed: 08/29/97 08/29/97 08/29/97 08/29/97 <br /> Instrument I.D.#: GCHP-7 GCHP-7 GCHP-7 GCHP-7 <br /> Matrix Spike <br /> %Recovery: 94 so as es <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 94 89 88 84 <br /> Relative% <br /> Difference: 0.0 1.1 <br /> 1.1 2.4 <br /> SE A gNALYTICAL Please Note: <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> preparation and analytical methods employed for the samples. The LCS%recovery data is used for <br /> Pro <br /> CCC (v validation of sample batch results. Due to matrix effects,the OC limits for MS/MSD's are advisory only <br /> ( inda C. Schneider and ora not used to axept or reject batch results. <br /> ject Manager/Sacramento Labors ory <br /> 7081107.KLF <4> <br />