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1 SEQUOIA ANALYTICAL <br /> h rive • Redwood C 3 <br /> 680 Chesapeake D City, CA 9406 <br /> ' (415) 364-9600 FAX(415) 364.9233 <br /> PX�---- <br /> 4 4 ti W S v y r f WXva0l00vOLLW x <br /> ESNA Client Project 1D Wo623, Falcon Fre Station#2 <br /> 1710 Main Street <br /> Escalon, CA 95320 <br /> ' Atterltlon• John Lane OC Sam a Groin 2044.327 Re rted: Ma 7, 1992 <br /> QUALITY CONTROL DATA REPORT <br /> n <br /> ' ANALYTE Chlcro- <br /> 1,1-0chlonxMene Trichion thene benzene gamma-BHC Aldnn Dieldnn <br /> ' Method: EPA 8010 EPA 8010 EPA 8010 EPA 8080 EPA 8480 EPA 8080 <br /> Analyst. M.L.aikhtman M L wkhtman M.Laikhtman A Glover A.Glover A Glover <br /> Reporting Units pg/kg pg/kg vg/kg pg/kg Ng/kg jig/kg <br /> ' Date Analyzed: May 4 1992 May 2. 1992 May 2. 1992 Apr 29, 1992 Apr 29. 1992 Apr 29, 1992 <br /> CC Sample#: VBuco5=2 vacx05=2 VOLK050292 BL K042892 BL.KD4M2 BL K042892 <br /> Sample Conc.: N D N D N D. N D. N D. N.D <br /> Spike Conc. <br /> Added: 50 50 50 20 20 80 <br /> ' Conc. Matrix <br /> Spike: 66 45 51 20 23 100 <br /> ' Matrix Spike <br /> % Recovery: 132 90 102 100 115 125 <br /> 1 Conc. Matrix <br /> Spike Dup.: 64 4.6 50 19 22 99 <br /> Matrix Spike <br /> Duplicate <br /> % Recovery: 128 92 100 95 110 124 <br /> Relative <br /> ' % Difference: 3.1 2.2 2.0 51 44 080 <br /> EOUOIA ANALYTICAL %Recovery Conc of M S -Conc of Sample x 100 <br /> Spike Conc Added <br /> Relative%Ddference Conc of M S -Conc of M S 0 x 100 <br /> (Conc of M S + Conc of M S D)/2 <br /> of ext Manager 2444327 WAT <11> <br />