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SEQUOIA ANALYTICAL <br />680 Chesapeake Drive • Redwood City, CA 94063 <br />(415) 364-9600 • FAX (415) 364-9233 <br />2134 Rheem Drive, Suite B Matrbc: Solid <br />Pleasanton, CA 94588 <br />Attention: John Lamb CC Sample Group: 3K66101-06Reported.: _ Nov <br />ANALYTE Diesel <br />Method: EPA G)15 Mod. <br />Analyst: D. Tran <br />MS/MSD <br />Batch#: 3K66103 <br />Date Prepared: <br />11/15/93 <br />Date Analyzed: <br />11/17/93 <br />Instrument I.D.#: <br />GCHP-4A <br />Conc. Spiked: <br />15 mg/kg <br />Matrix Spike <br />% Recovery: <br />84 <br />Matrix Spike <br />Duplicate % <br />Recovery: <br />86 <br />Relative % <br />Difference: <br />2.4 <br />LCS Batch#: 13LK111593 <br />Date Prepared: 11/15/93 <br />Date Analyzed: 11/17/93 <br />Instrument I.D.#: GCHP-4A <br />LCS % <br />Recovery: 100 <br />% Recovery <br />Control Limits: 3e-122 <br />SEQUOIA ANALYTICAL <br />Vickie Tague <br />Project Manager <br />QUALITY CONTROL DATA REPORT <br />Please Note: <br />The LCS is a control sample of known, interferent free matrix that is analyzed using the same reagents, <br />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. M <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 />3K66101.RES <4> <br />