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Barringer Laboratories, Inc. <br /> 15000 IV 61h Avenne Suire 300 Golden,Colorado 80401 5047 (800)654 0506 (303)277-1687 Faa(303)277 1689 Date: 15-Jun-99 <br /> CLIENT: CGRS <br /> QC SUMMARY REPORT <br /> Work Order: 9906044 <br /> Project: 2755aa Matrix Spike <br /> Balch ID: A409 SegNo:4328 Method:EPA 300.0 Prep Dale: Analysis Date:S127199 <br /> Sample ID: 992130.1 SPK Matrix:Aqueous Units:mglL Analyst:SSM <br /> Analyze Result t 2 sigma Limil SpikeVal SpikegeNal %REG Lowl-imil HighLhnil DupReNal :2 sigma RPD/RER RPDLiml Dual <br /> Chloride IB 1 10 8.3 90 75 125 <br /> Fluoride 10 0.1 10 0,21 100 75 126 <br /> Nitrogen,Nitrate(As N) 10 0.1 10 0,19 100 75 125 <br /> Nitrogen,Nilyde 10 0.1 10 ND 104 75 126 <br /> Sullate 25 1 10 15 102 75 125 <br /> Qualifiers: ND-Not detected at the reporting limit R-RFD above scccpled limit Y -Uospiked sample>4 time+amouot spiked <br /> J-Analyze detected below quanliladoo limits X-Dupliute samples)e 5 times PQL B-Analyze detected in the associated method blank <br /> Page 19 <br /> 9-Value above quaogutim range S-Spike recovery outside accepted recovery limits Z-Sample> 10 limes blank restiz <br />