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AA <br /> Sn 680 Chesapeake Dnve Redwood City,CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> equoia404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510) 988-9673 <br /> ayo. <br /> Ana -- ica1 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> ,> }c <br /> ambria Environmental Tech} n + Client Project ID Shell 1071 N Main, Manteca r r <br /> 114465th St, Ste C Matrix Solid <br /> Oakland, CA 94608 <br /> Attention_Josh Bergstrom Work Order# 9709770 _ 05 _ Reported Sep 26, 1997 <br /> tfti-xtih <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch#: GC091697BTE(ECS G0091697BTEKEXB GC091697BTEXEXB GC091697BTEXEXB G0091697STEXEXB <br /> Anally 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 R Geckler R.Geckler R.Geckler R.Geckler R Geckler <br /> MS/MSD#: 970930814 970930814 970930814 970930814 970930814 <br /> Sample Conc.. N D N D N D N D N D <br /> Prepared Date 9/16/97 9/16/97 9/16/97 9/16/97 9/16/97 <br /> Analyzed Date 9/16/97 9/16/97 9/16/97 9/16/97 9/16/97 <br /> Instrument 1.D.#. GCHP22 GCHP22 GCHP22 GCHP22 GCHP22 <br /> Cone. Spiked. 0 20 mg/Kg 0 20 mg/Kg 0 20 mg/Kg 0 60 mg/Kg 1 2 mg/Kg <br /> Result- 017 017 016 047 10 <br /> MS%Recovery a5 85 80 78 83 <br /> Dup.Result: 0 17 016 016 046 1 0 <br /> MSD %Recov.: 85 80 80 77 83 <br /> RPD: 00 61 00 22 00 <br /> RPD Limit. 0-25 0-25 0-25 0-25 0-25 <br /> LCS#: BLK091797 BLK091797 BLK091797 BLK091797 BLK091797 <br /> Prepared Date. 9/17/97 9/17/97 9/17/97 9/17/97 9/17/97 <br /> Analyzed Date- 9/17/97 9/17/97 9/17/97 9/17/97 9/17/97 <br /> Instrument I D.#, GCHP22 GCHP22 GCHP22 GCHP22 GCHP22 <br /> Cone. Spiked: 0 20 mg/Kg 0 20 mg/K9 0 20 mg/Kg 0 60 mg/Kg 1 2 mg/Kg <br /> LCS Result 017 017 018 0 51 10 <br /> LCS%Recov.. 85 85 90 85 83 <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 1s a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> S OIA ANAL 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 /> ` V�l� 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 /> RI hard Herling <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9709770 CCC <2> <br />