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Sequoia <br /> 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane f Walnut Creak,CA 94598 (510) 988 9600 FAX(510)986 9673 <br /> Analytical 619 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Smith Environmental ryClient Project ID 15666, 94-367 1 0-1 1 w <br /> 1260 Graphics Drive Matrix Liquid <br /> "Modesto, CA 95351-1502 <br /> Attention Jeanne Homsey Work Order# 9607717-01,f02 Reported Jul 29, 1996 <br /> v .r >, r .r,. .. .r„ r,,,-< n, . <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# GC072196BTEX07A GC072196STEX07A GCO72196BTEX07A GC072196BTEX07A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: J Heider J Helder J Heider J Helder <br /> MS/MSD#- 960771901 960771901 960771901 960771901 <br /> Sample Conc.: N D N D N D N D <br /> Prepared Date: 7/21/96 7/21/96 7/21/96 7/21/96 <br /> Analyzed Date. 7/21/96 7/21/96 7/21/96 7/21/96 <br /> Instrument I D # GCHP7 GCHP7 GCHP7 GCHP7 <br /> Conc Spiked 10,ug/L 10ug/L 10,ug/L 30,ug/L <br /> Result: 11 11 11 32 <br /> MS % Recovery 109 108 108 107 <br />• Dup Result. 10 10 10 30 <br /> MSD %Recov.: 102 102 103 100 <br /> RPD 66 57 47 67 <br /> RPD Limit: 0-25 0-25 0-25 0-25 <br /> v, ,ruv ry.. rr f uv r r r +vry vrr n{} 4 t f, r.r.ft N rv, w v v z nr rix rv. vvr....,.,.xnnrr Y Fn w.. m v'.>.vv +r<r +• nn„ v f ft}w >-Jr <br /> LCS #: BLK072196 BLK072196 13LK072196 BLK072196 <br /> Prepared Date. 7/21/96 7/21/96 7/21/96 7/21/96 <br /> Analyzed Date: 7/21/96 7/21/96 7/21/96 7/21/96 <br /> Instrument I.D.#: GCHP7 GCHP7 GCHP7 GCHP7 <br /> Conc Spiked- 10pg/L 10yg/L 10yg/L 30ug/L <br /> LCS Result: 11 11 11 32 <br /> LCS % Recov : 108 107 107 106 <br /> MS MSD 60-140 60-140 60-140 60-140 <br /> LCS 70-130 70-130 70-130 70-130 <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 />. SFAAn4tis <br /> NA [CAL preparation,and analytical methods employed 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 matrix <br /> Vinterference,the LCS recovery is to be used to validate the batch <br /> Project Manager ""`MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9607717 SSS <2n <br />