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�:tr tyle ti; <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue.Suite 8 Sacramento.CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd, North.Ste. D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> ATC Associates, Inc. Client Project ID: Inland Paint Co./17295.0001 <br /> 1117 Lone Palm Avenue <br /> Modesto, CA 95351-1502 <br /> Attention: Drew Van Allen QC Sample Group: 9812D01-03 Reported: Jan 7, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> Matrix: Liquid <br /> Method: EPA 8020 <br /> Analyst: MM <br /> ANALYTE Benzene Toluene Ethylbenzene Xylenes <br /> QC Batch #: GC123098BTEX03A <br /> Sample No.: GW9812C82-1 <br /> Date Prepared: 12/30/98 12/30/98 12/30/98 12/30/98 <br /> Date Analyzed: 12/30/98 12/30/98 12/30/98 12/30/98 <br /> Instrument I.D.#: GCHP03 GCHP03 GCHP03 GCHP03 <br /> Sample Cone., ug/L: N.D. N.D. N.D. N.D. <br /> Cone. Spiked, ug/L: 10 10 10 30 <br /> Matrix Spike, ug/L: 11 11 9.7 31 <br /> % Recovery: 110 110 97 103 <br /> Matrix <br /> Spike Duplicate, ug/L: 11 11 10 32 <br /> % Recovery: 110 110 100 107 <br /> Relative % Difference: 0.0 0.0 3.0 3.8 <br /> RPD Control Limits: 0-25 0-25 0-25 0-25 <br /> LCS Batch#: GC123098BTEX03A <br /> Date Prepared: 12/30/98 12/30/98 12/30/98 12/30/98 <br /> Date Anaiyzed: 12/30/98 12/30/98 12/30/98 12/30/98 <br /> Instrument I.D.#: GCHP03 GCHP03 GCHP03 GCHP03 <br /> Cone. Spiked, ug/L: 10 10 10 30 <br /> LCS Recovery, ug/L: 11 11 9.5 30 <br /> LCS % Recovery: 110 110 95 100 <br /> Percent Recovery Control Limits: <br /> F- <br /> MS/MSD 60-140 60-140 60-140 60-140 <br /> LCS 70-130 70-130 70-t 30 70-130 <br /> Quality Assurance Statement: All standard operating procedures and quality control requirements have been met. <br /> Please Note: <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 /> t 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 fail within specified control limits due to matrix <br /> interference.the LCS recover is to be used to validate the batch. <br /> / Y <br /> Kay0a ,MTny <br /> Prdjjct Manager <br />