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SEQUOIA ANALYTICAL <br /> 319 Striker Avenue Suite 8 • Sacramento CA 95834 <br /> 1916) 921-9600 • FAX (916) 921 0100 <br /> Aegis Environmental Consultants Client Project 0 Shelf 141 N EI Doraoo, Stockton <br /> 1050 Meiody Lane, Ste 160 Matra Water <br /> *Roseville, CA 95678 <br /> Attention Paul Graff OC Sample Group 3110198-200 Reported Nov 18 1993 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Chlorice Nitrate --ulfate Turbidity <br /> Method EPA 300 0 EPA 300 0 =aa 300 0 EPA 1801 <br /> Anaivst. G Cern G Kern Cern J Herder <br /> (VIS/MSD <br /> 8atcn#- 9311646-02 3311646-02 31 1c46-02 9311478-1 <br /> Date Preparea: 1 ` 2,'93 1/12'93 2 93 -1110193 <br /> Date Analyzed: 11/12,'93 11/12/93 93 1/10/93 <br /> Instrument 10 #• N/A N/A d A N/A <br /> Conc Spiked: 3 0 mg/L 10 mg/L 2 Ta L z a NTu <br /> Matrix Spike <br /> 06 Recovery 10 0 - '00 <br /> Matrix Saike <br /> OuDficate % <br /> Recovery .c 0 100 <br /> Relative % <br /> Difference . 3 _ l0 <br /> LOS Batch# <br /> Date Preparea- <br /> Date Anaiyzea. <br /> Instrument I D # <br /> LC5 % <br /> Recovery- <br /> Recovery <br /> Control Limits- 90-110 90-110 70-110 80-120 <br /> Please Note <br /> The LCS is a control sample or known,interferent free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL preparation and analvtical methods employed for the samples The matrix spike is an aliquot of sample <br /> fortified with known euantnies of soecific compounas and subjected to the entire analytical procedure if <br /> *he recovery of anames Trom the matrix spike does not fall within soecified control limits due to matrix <br /> * / interterence the LC S ecovery is to be used to validate the hatch <br /> '_�naa C Schneider <br /> Project Manager 3110198 AEG <13> <br />