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680 Chesapeake Drive Redwood City.CA 94063 <br /> Sequoia tY (650) 364-9600 FAX(650)364-19233 <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)921-61o0 <br /> 1455 McDowell Blvd:North,Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> ATC Associates, Inc. Client Project Ila: Rosettis Market !I <br /> 1260 Graphics Drive ; <br /> Modesto, CA 95351-1502 <br /> Attention: Jeanne Homsey QC Sample Group: 9807057-07--08 <br /> Reported: Jul 10,1. 1998 f <br /> "" 11 <br /> QUALITY CONTROL DATA REPORT <br /> Matrix: Solid <br /> Method: EPA 8015M <br /> Analyst: I'A. Porter <br /> ANALYTE Diesel <br /> ii <br /> 1 II <br /> QC Batch#: GC0707980HBPEXA <br /> i! <br /> Sample No.: 98'06J42-21 w_ <br /> Date Prepared: 717198 I: <br /> Date Analyzed: 718198 <br /> l <br /> Instrument LD.#: GCHP5A II <br /> Sample Cone., m01K9: N.D: I <br /> Cone. Spiked, mg/Kg.- 17 <br /> Matrix Spike, mglKg: 12 <br /> % Recovery: 71 <br /> Matrix I <br /> Spike Duplicate, mg/Kg: 14 i. <br /> % Recovery: 82 <br /> 4 <br /> Relative % Difference: 14 <br /> RPD Control Limits: 0-50 <br /> .I <br /> LCS Batch#: BLK07079BAS <br /> I <br /> Date Prepared: 717198 �l <br /> Date Analyzed: 718198 3 <br /> Instrument I.D.#: GCHP5A <br /> Cone. Spiked, mg/Kg, 17 <br /> Recovery, mg/Kg: 14 <br /> LCS % Recovery: 82 <br /> fff•••��� Percent Recovery Control Limits: <br /> MS/MSD 50.150 <br /> LCS 60-140 <br /> Fr 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 /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure. If <br /> f <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. Ij i <br /> Ka Kimyai <br /> Project Manager �l <br />