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l <br /> f <br /> w <br /> SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> ` (415) 364-9600 • FAX(415) 364-9233 <br /> n <br /> RESNA' Client Project ID W0376 00, Chevron Stockton <br /> 1710 Main Street Matrix Water <br /> Escalon, CA 95320 Reported Sep7, 1993 <br /> ' Attention John Lane QC Sample Group 3HD3fi01� p 4 v v <br /> 1 QUALITY CONTROL DATA REPORT <br /> ANALYTE Diesel <br /> Method. EPA 8015 <br /> Analyst. V Harabalahran <br /> Conc. Spiked 300 <br /> Units ►►g/L <br /> LCS Batch#: BLK083093 <br /> Date Prepared. 8/30/93 <br /> Date Analyzed 8/31/93 <br /> Instrument I D.#' GCHP-5 <br /> LCS % <br /> Recovery. so <br /> Control Limtts. 50-151 <br /> ' MS/MSD <br /> Batch# 3HD4503 <br /> Date prepared 8/30/93 <br /> Date Analyzed. 8/31/93 <br /> Instrument l D #. GCHP-5 <br /> ' Matrix Spike <br /> %Recovery- 83 <br /> Matrix Spike <br /> ' Duplicate% <br /> Recovery 78 <br /> ' Relative% <br /> Difference. 62 <br /> ' 1 <br /> SE 1AA ANAL C L Please Note <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> reparation and analytical methods employed for the samples The LCS%recovery data is used for <br /> validation of sample batch results Due to matrix effects,tits QG limits far MS/iu15Ds are advisory only <br /> fickle 7ague and are not used to accept or reject batch results <br /> 3HD3601 WAT <3> <br /> Project Man ger <br />