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Sequoia 680 Chesapeake Drive Redwood City,CA 94063415) 364.9600 ` FAX <br /> 04fV.Wi o Cane F , (415) 364.9393 <br /> 8 Walnut Creek,CA 94598 _,510) 988.9600 FAX(510)988.9ti73 <br /> Analytical 819 Striker Avenue,Suite 8 sacrament.,CA 95834 (916) 931.960o FAX (916)921-o too <br /> f <br /> Terra`Vac Cor . ..:.. <br /> p Clrerrf Protect ID. Chevron #9-4054 <br /> 14798 Wicks Blvd, Matrix: Solid <br /> San Leandro, CA 94577 <br /> Attention Cliff Garrett OC Sample Group 6020632-639 <br /> Reported: Feb 20, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene <br /> Ethyl Xylenes I <br /> Benzene <br /> OC Batch#: SP021396 SP021396 SP021396 SP021396 <br /> 8020EXA 8020EXA 8020EXA 8020EXA <br /> Anaiy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: K. Nill K. Nill K.NiliK. Nin f <br /> MS/MSD #: 6020639 6020639 6020639 6020639 <br /> r, <br /> Sample Cone.: N.D. N,D. N.D. N.D. <br /> Prepared Date: 2/14/96 2/14/96 2/14/96 2/14/96 <br /> Analyzed Date: 2/14/96 2/14/96 2/14/96 2/14/96 <br /> Instrument I.Q.#:. HP-4 HP-4. HP-4 HP-4 <br /> Cone. Spiked: 0.40 mg/kg 0.40 mg/kg 0,40 mg/kg 1.2 mg/kg <br /> Result: 0.49 0.51 0.52 1.5 <br /> MS %Recovery: 123 128 130 125 <br /> Dup. Result: 0.54 0.5 0.58 1.7 <br /> MSD % Recov.: 135 140 145 142 <br /> RPD: 8.7 9.4 11 13 <br /> RPD Limit: D-50 6-50 0-50 0-50 <br /> LCS#: 4LCS021495 4LCS021496 4LCS021496 4LCS021496 <br /> Prepared Date: 2/14/96 2/14/96 2/14/96 2/14/96 i <br /> Analyzed Date: 2/14/96 2/14/96 2/14/96 2/14/96 <br /> Instrument I.D.#: HP-4 HP-4 HP-4 HP-4 <br /> Cone. Spiked: 20{rg/L 20Ng/L 20Ng/L 60Ng/L <br /> LCS Result: 24 25 25 75 <br /> LCS%Recov.: 120 125 125 125 <br /> ii <br /> T3 <br /> WSu <br /> I <br /> I <br /> [C7ontrolLimits 55-145 47.149 47.155 56-140 <br /> 7 <br /> Please Nate: <br /> pKeThe LCS is a control sample of known,interferent-tree matrix that is analyzed using the same reagents, <br /> JOIA ANALYTICAL, #1271 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. H <br /> the recovery of analytes from the matrix spike does not fan within specified control limits due to matrix <br /> interference,the LCS recoveryis to be used to validate the batch. <br /> et Wimer '"MS-Matrix Spike,MSD=MS Duplicate, RPD=Relative%Ditierence <br /> t Manager <br /> 6020632.TVC <3> <br />