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` SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> u4prn r r✓r }fr r1lNrrfx .x fgw{y✓p✓r✓nr/.vrNr ✓ rr✓ rrxw {vv {vkrr 44{Rir{il r4J� h2�6 WY <br /> iigroWest, Inc `"�"`�° `` ""' tllent Project ID SC�4'1f4flk"Fl Dorado.S�ociiton, CA <br /> 50 Melody Lane, Ste 160 Matrix Water <br /> Roseville, CA 95678 <br /> Attention Paul Graff OC Sample Goup 404-0118 Reported Apr 18, 1994 <br /> r r A u . .. H f <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE 24-Duntro- Penta- <br /> Acenaohthene 4-Nitrophenol toluene chlorophenol ene <br /> Method EPA 625 EPA 625 EPA 625 EPA 625 EPA 625 <br /> Analyst. S Le S Le S Le S Le 5 Le <br /> Concentration <br /> Spiked: 50 ug/L 100 ug/L 50 ug/L 100 ug/L 50 ug/L <br /> LCS Batch#- N/A N/A N/A N/A N/A <br /> Date Prepared, N/A N/A N/A N/A N/A <br /> Date Analyzed N/A N/A N/A N/A N/A <br /> Instrument I D # N/A N/A N/A N/A N/A <br /> LCS % <br /> Recovery: N/A N/A N/A N/A N/A <br />*Control Limits- 47-145 DL-132 39-139 14-176 52-115 <br /> MS/MSD <br /> Batch # BLK040594 BLK040594 BLK040594 BLK040594 BLK040594 <br /> Date Prepared 4/5/94 4/5/94 4/5/94 4/5/94 4/5/94 <br /> Date Analyzed. 4/7/94 4/7/94 4/7/94 4/7/94 4/7/94 <br /> Instrument LD #: N/A N/A N/A N/A N/A <br /> Matrix Spike <br /> % Recovery- 78 64 60 71 94 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 74 69 62 71 104 <br /> Relative% <br /> Difference. 53 75 33 00 10 <br /> SEQUOIA ANALYTICAL 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 LCS%recovery data is used for <br /> validation of sample batch results Due to matrix affects the QC limns for M5/MSD s are advisory only <br /> Linda C Schneider and are not used to accept or reject batch results <br /> Project Manager Page 2 of 2 <br /> 4040118 FUG <10> <br />