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Sequoia680 Chesapeake Drive Redwood City,CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921.0 100 <br /> :..........f <br /> . <br /> ::'Cambria Client lD Shell 1267 Club ..........:.................. <br /> �./ <br /> > 270 Perkins Ave. Matrix: Solid <br /> Sonoma, CA 95476 <br /> :::Attention: Joe Neely Work Order#: 9802F61 -01-10 Reported: Mar 11, 199&.-.` <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch#: GCO2279813TEXEXC GCo22798STEXE<C 00022798BTEXEXC GCO22798STEXE(C GCO22798BTEXEXC <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: J. Minkel J. Minkel J.Minkel J. Minkel J.Minkel <br /> MS/MSD#: 9802F3301 9802F3301 9802F3301 9802F3301 9802F3301 <br /> Sample Conc: N.D. 0.010 0.010 0.056 0.090 <br /> Prepared Date: 2/27/98 2/27/98 2/27/98 2/27/98 2/27/98 <br /> Analyzed Date: 3/2/98 3/2/98 3/2/98 3/2/98 3/2/98 <br /> Instrument I.D.#: GCHP7 GCHP7 GCHP7 GCHP7 GCHP7 <br /> Conc. Spiked: 0.20 mg/Kg 0.20 mg/Kg 0.20 mg/Kg 0.60 mg/Kg 1.2 mg/Kg <br /> Result: 0.19 0.19 0.20 0.59 1.2 <br /> MS %Recovery: 95 95 95 89 93 <br /> Dup. Result: 0.21 0.22 0.22 0.66 1.3 <br /> MSD % Recov.: 105 105 105 101 101 <br /> RPD: 10 15 9.5 11 8.0 <br /> RPD Limit: 0-25 0-25 0-25 0-25 0-25 <br /> LCS #: BLK022798 BLK022798 BLK022798 BLK022798 BLK022798 <br /> Prepared Date: 2/27/98 2/27/98 2/27/98 2/27/98 2/27/98 <br /> Analyzed Date: 2/27/98 2/27/98 2/27/98 2/27/98 2/27/98 <br /> Instrument I.D.#: GCHP7 GCHP7 GCHP7 GCHP7 GCHP7 <br /> Conc. Spiked: 0.20 mg/Kg 0.20 mg/Kg 0.20 mg/Kg 0.60 mg/Kg 1.2 mg/Kg <br /> LCS Result: 0.18 0.18 0.18 0.56 1.1 <br /> LCS % Recov.: 90 90 90 93 92 <br /> 60-140 60-140 60-140 60-140 60-140 <br /> LCS 70-130 70-130 70-130 70-130 70-130 <br /> Control Limits <br /> Please Nate: <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 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. 9 <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch. <br /> lZdrory <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9802F61.CCC <1> <br />