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SEQUOIA ANALYTICAL <br />680 Chesapeake Drive • Redwood City, CA 94063 <br />(415) 364-9600 • FAX(415)364-9233 <br />w +r ; <br />r" A "" h, <br />rRESNA <br />Client Project ID <br />150054 01, Corrigan Property <br />°= <br />1710 Main Street <br />Matrix <br />Solid <br />v Escalon, CA 95320 <br />{Attention John Lane <br />QC Sample Group <br />3L60001-30 <br />Reported Dec 27, 1993 <br />S i r'r'n`K <br />QUALITY CONTROL DATA REPORT <br />ANALYTE Diesel <br />Method. EPA 8015 Mod <br />Analyst: K Wilmer <br />MS/MSD <br />Batch#: 3120940 <br />Date Prepared - <br />Date Analyzed: 12/22/93 <br />Instrument I.D.#: GCHP-3 <br />Conc. Spiked. 10 mg/kg <br />Matrix Spike <br />% Recovery 91 <br />Matrix Spike <br />Duplicate % <br />Recovery 91 <br />Relative % <br />Difference: 00 <br />,+� ry + + v Y4x r h4 vv. rxx n,rii v n SSx ]�{ ut {v♦rr wnsN , r vi.~+.,. rix , v f h m n vvr w.v+...w rn4 ~ J t`v{v f 4f .. .. .v• rvxxx,. v,� + <br />ril <br />LCS Batch#: BLK122093 <br />Date Prepared. - <br />Date Analyzed: 12/22/93 <br />Instrument I D.# GCHP-3 <br />LCS % <br />Recovery- 92 <br />ecovery <br />Control Limits. 38-122 <br />OPEQUOIA ANALYTICAL <br />U r "lvt <br />Vickie Ta Yue <br />Project Manager <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 />fortrfied 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 />nterference, the LCS recovery is to be used to validate the batch <br />31-60001 WAT e7> <br />0 <br />