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1 <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 FAX (415) 364-9233 <br /> RESNA Client Project fD P7120 93 Quik Stop 120 <br /> 3315 Almaden Expwy Suite 34 Matrix Water <br /> San Jose, CA 95118 <br /> Attention Rich Garlow QC Sample Group 3LB9402 4 Reported Jan 6 1994 <br />' QUALITY CONTROL DATA REPORT <br />' ANALYTE Diesel <br /> Method EPA 5015 <br />' Analyst A Nagra <br /> MS/MSD <br />' Batch# 3LB6201 <br /> Date Prepared 12/27/93 <br /> Date Analyzed 12/28/93 <br />' Instrument I D # GCHP 5 <br /> Conc Spiked 600ug/L <br /> Matrix Spike <br /> % Recovery ss <br /> Matrix Spike <br />' Duplicate % <br /> Recovery 71 <br /> Relative % <br />' Difference 30 <br /> ILCS Batch# BLK122793 <br />' Date Prepared 12/27/93 <br /> Date Analyzed 12/28/93 <br /> Instrument I D # GCHP-5 <br /> LCS % <br /> Recovery 84 <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 /> 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 /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> 4 interference the LCS recovery is to be used to validate the batch <br /> Vickie Tague 3 <br /> Project Manager L69401 RES <a> <br />