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' 1 Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> 1900 Hates Avenue,Suite L Concord,CA 94520 (510) 686-9600 FAX(510) 686 9689 <br /> WI Analytical a19 Strtker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> tMittelhauser Corporation ui k yr J Client Project ID x 2168 01-001, Unocal/Tracy xv <br /> 7901 Stoneridge Drive, Suite 123 Matrix Liquid <br /> Pleasanton, CA 94588 wH v v u vv rv, k v YM x l .x xr f x, rn Y <br /> Attention R Marks/R Paper Work Order95022 <br /> _# 43-09 Reported Feb 9, 1995 <br /> ' QUALITY CONTROL DATA REPORT <br /> Analyte: Total Recoverable <br /> Petroleum Hydrocarbon <br /> OC Batch#. OP0203955520EXB <br /> Analy Method: SM 5520 BF <br /> Prep Method: N/A <br /> ' Analyst: k Pina <br /> MS/MSD #• BLKo20395 <br /> ' Sample Conc: NO <br /> Prepared Date: 2/3/95 <br /> Analyzed Date: 2/6/95 <br /> Instrument I.D.#: manual <br /> ' Conc Spiked: 30 mg/L <br /> Result: 24 <br /> MS % Recovery: 80 <br /> Dup Result: 25 <br /> MSD % Recov.: 83 <br /> ' RPD: 41 <br /> RPD Limit: 0-30 <br /> `} wr x.4Sa rrYh sOerv.¢ �...wl wA�}ti .r.�ri..�.}}EEs>`2,'. .iv w.[t'�'�„x,n f�r�.`9� <br /> v}.vw lti 4"4~ :riAsW vf J } rrr {i til rw , Kw yr hifv <br /> rrr r W WG x+n.C3r� v}i v v iAri rvti`v. .r ].t'Arr }E. <br /> LCS #: BLx020s95 <br /> ' Prepared Date: 2/3/95 <br /> Analyzed Date: 2/6/95 <br /> Instrument I.D.#: Manual <br /> ' Conc Spiked: 30 mg/L <br /> LCS Result: 24 <br /> ' LCS% Recov.: so <br /> ' LCS 70-110 <br /> Control Limits <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 employers 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 /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matnx <br /> interference,the LCS recovery is to be used to validate the batch <br /> Vickie Tague Clark <br /> ' Project Manager *'MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9502243 MMM <2> <br />