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'! ,v Sequoia 680 Chc"pcake Drive Redwood City,CA 93063 415) 3649600 FAX(415)364.9233 <br /> D9 1J, leer A Lam Walnut Creek,CA 94598 ';10) 988.9600 FAX(510)988.9673 <br /> Analytical `"`819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX(916)921.0100 <br /> Terra Vac Co:: <br /> rp Cileni Project Ib. Chevron +9-4054 <br /> 14796 Wicks Blvd. Matrix: Solid <br /> San Leandro, CA 94577 <br /> Attention Cliff Garrett QC Sample Group 6020632-639 <br /> Reported: Feb 20, 1996.::: <br /> QUALITY CONTROL DATA REPORT <br /> i <br /> l Analyte: Benzene Toluene Ethyl Xyienes <br /> Benzene <br /> QC Batch#: SP021396 SP021396 SP021396 SP021396 f <br /> 8020EXA 8020EXA 8020EXA 8020EXA <br /> Analy. Method: EPA 8020 EPA 6020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 j <br /> Analyst: K.Nill K.Nill K.Nili K. Nifi <br /> MS/MSD#: 6020149 6020149 6020149 6020149 <br /> Sample Conc.: N.D. M.D. N.D. N.Q. l <br /> Prepared Date: 2/13/96 2/13/96 2/13/96 2/13/96 <br /> Analyzed Date: 2/13/96 2/13/96 2/13/96 2/13/96 <br /> Instrument I.D.#: HP-5 HP-5 HP-5 HP-5 <br /> Cone. Spiked: 0.40 mg/kg 0.40 mg/kg 0.40 mg/kg 1.2 mg/kg <br /> En <br /> Result: 0.39 0.36 0.39 1.2 <br /> MS % Recovery: 98 95 98 100 <br /> Dup. Result: 0.40 0.39 0.39 1.2 <br /> MSD %Recov.: 100 98 98 100 <br /> RPD: 2.5 2.6 0.0 0.0 <br /> RPD Limit: 0.50 0-50 0.50 0.50 <br /> ......:. <br /> LCS#: 5LCS021396 5LCS021396 51-CS021396 5LCS021396 <br /> Prepared Date: 2/13/96 2/13/96 2/13/96 2/13/96 <br /> Analyzed Date: 2/13/96 2/13/96 2/13/96 2/13/96 <br /> r+ Instrument I.D.#: HP-5 HP-5 HP-5 HP-5 <br /> Cone. Spiked: 20pg/L 20pg/L 20Ng/L 60Ng/L <br /> LCS Result: 20 19 20 60 <br /> LCS % Recov.: 100 95 100 100 <br /> E <br /> H1 <br /> LCS <br /> Control Limits 55-145 47-149 47-155 56-140 <br /> I <br /> Please Note: <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> DIA 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. tl <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recovea is to be used to validate the batch. <br /> Wimer -;MS=Matrix Spike.MSD=MS Duplicate,RPD=Relative%Difference <br /> Projec Manager <br /> i <br /> 60206323VC <4> <br />