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i!DSequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415)364 9233 <br /> Analytical 1900 Bates Avenue,Suite L Concord CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> 819 Straker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> RESNA Client Project ID 150047 01, Ekholm Property <br /> 1710 Main Street Matrix Liquid v <br /> Escalon, CA 95320 <br /> -Attention John Lane QC Sample Group 4CB9201 Reported Mar 30, 1994, <br /> v , . „ , ` r . r ,,. r vt , r.NA `�v . .�,; ,",rv.=�•�:•rte. ` <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Diesel <br /> Method: EPA 8015 <br /> Analyst. A Nagra <br /> MS/MSD <br /> Batch#: BLK031894 <br /> Date Prepared: 3/18/94 <br /> Date Analyzed 3/18/94 <br /> Instrument LD #: GCHP-56 <br /> Conc. Spiked. 6Wpg/L <br /> i <br /> Matrix Spike <br /> % Recovery- 67 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery. 70 <br /> Relative% <br /> Difference: 44 <br /> LCS Batch#: 4CB9201 <br /> Date Prepared: 3/22/94 <br /> Date Analyzed: 3/24/94 <br /> Instrument I D #: GCHP-56 <br /> LCS % <br /> Recovery. 83 <br /> % Recovery <br /> Control Limits- 28-122 <br /> Please Note <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> SEQUOIAANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> C 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 fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> Vickie Tague Clark <br /> Project Manager 4CB9201 wAT c4> <br />