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Barringer Laboratories, Inc. <br /> 15000 IV61h Avenue Suite 300 Coldeik Colorado 80401.5047 (800)6W OS06 (303)277-1687 Fax(303)277-1689 Date: 15-18n-99 <br /> CLIENT: CGRS <br /> Work Order: 9906044 QC SUMMARY REPORT <br /> Project: 2755aa <br /> Matrix Spike <br /> Batch ID: P99 SegNo:4291 Method:EPA 200.7 Prep Date:512W9 Analysis Date:5/2199 <br /> Sample ID: 992215-2 SPK Matrix:Aqueous Unts:mgA. Analyst:SLM <br /> Analyze Result s:2 sigma Limit SpikeVal SpikeRelVal Y REC LowLlmlt Highl-imit DupReNel x 2 sigma RPDIRER RPDLImrl Dual <br /> Aluminum 4.0 0.05 4.0 ND lot 75 125 <br /> Arsenic 3.8 0.1 4.0 ND 94 75 125 <br /> Barium 4.5 0.02 4.0 0.11 109 75 125 <br /> Beryllium 0.10 0.004 0.10 ND 103 75 125 <br /> Boron 2.1 0.1 2.0 ND 103 75 125 <br /> Cadmium 0.064 0.005 0.10 ND 84 75 125 <br /> Chromium 0.39 0.01 0.40 ND 97 75 125 <br /> Cobalt 0.93 0.01 1.0 ND 93 75 125 <br /> Copper 0.52 0.01 0.50 0.0080 103 75 125 <br /> Iron 2.0 0-1 2.0 NO 102 75 125 <br /> Lead 0.95 0.05 1.0 0.28 87 75 125 S <br /> Manganese 0.99 0.005 1.0 ND 99 75 125 <br /> Molybdenum 2.0 0.01 2.0 NO 98 75 125 <br /> Nichol 0.94 0.04 1.0 NO 94 75 125 <br /> Selenium 4.0 0.1 4.0 NO 100 75 125 <br /> Silver 0.094 0.01 0.10 NO 94 75 125 <br /> Strontium 2.5 0.005 2.0 0.16 116 75 126 <br /> Tin 1.8 0.1 2.0 NO 89 75 125 <br /> Titanium 2.0 0.01 2.0 ND 101 75 125 <br /> Vanadium 0.96 0.01 1.0 ND 96 75 125 <br /> Zinc 1.2 0.02 1.0 0.12 107 75 125 <br /> QualiOen: ND-Not detmtod at the rcponing limit R-RPD above acccptcd limit Y -Unspiked semple>4 times amount spiked <br /> 1-Analyze detected below quaou6uion bouts X-Duplicate sample(s)<5 limes PQL B-Analyze dciccled io the associated method blank Page 21 <br /> B- Value above quanlizadoo range S-Spike tocovaiy outside accepted recovery limits Z-sample> 10 limes blank result <br />