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Barringer Laboratories, Inc. Date: 20-Jan-00 <br /> I5000 W 6th Avenue Suire 300 Golden,Colorado 80401-5047 (800)654-0506 (303)277-1687 Fax(303)277-1689 <br /> Client: CGRS <br /> Project: 2755 ua CASE NARRATIVE <br /> Work Order: 9912163 <br /> All reported values in this report have been rounded to the correct number of significant figures. All calculations have been <br /> performed before applying significant figures, therefore, not all calculations may be reproducible with the results printed in this <br /> report. <br /> Analytical comments for method EPA 270.2, sample 9912163-01 B: The sample was analyzed for selenium using the method of <br /> standard additions. <br /> This report has been amended from the report dated 1/6/2000 to report the reanalysis of the samples for chloride,fluoride, and <br /> sulfate. During a review of the IC data it was discovered that the standards used to calibrate the insturment were past a <br /> laboratory assigned expiration date. The instrument was recalibrated using compliant standards and the samples were then <br /> reanalyzed. <br /> Page 1 0/ 1 <br />