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18. Tests conducted by the Applicant indicate that there is little to no selenium in the <br /> shale in the area of the site. Similar reclaimed pits in the area have been used to store <br /> municipal water for Fort Collins, and Applicant testified that there have been no <br /> positive results for selenium from those pits. <br /> Over three years of quarterly baseline data in the three downstream monitoring wells <br /> verifies that current selenium levels are well below the associated water quality <br /> standard. Section 2.2.6 of The Knox Pit Ground Water Study, Second Submittal, <br /> January 2018, prepared by Telesto Solutions Inc. addresses the mechanisms in which <br /> Selenium can be potentially introduced into groundwater. This section also addresses <br /> the lab results obtained from random samples of shale bedrock that were collected <br /> from the monitoring wells. <br /> Section 7.1 of The Knox Pit Ground Water Study,Second Submittal, provides how the <br /> Monitoring Plan will address concerns that Selenium levels may potentially exceed the <br /> associated water quality standards through the trenches keyed into the weathered <br /> shale bedrock.The analysis and the Monitoring Plan provided in Section 7.1 continue <br /> to be the relevant evaluation and solution for addressing concerns. <br /> 19. To minimize potential impacts to groundwater quality, including through any <br /> leaching of selenium,Applicant is required to establish baseline groundwater quality <br /> prior to mining and continue monitoring throughout the life of the mine. Once the <br /> mining operation begins, groundwater quality samples will be taken quarterly, with <br /> results submitted to the Division in the Applicant's annual report. At all times, <br /> Applicant must comply with Colorado Department of Health and Environment Water <br /> Quality Control Commission standards. During the hearing,Applicant committed to <br /> continue monitoring for selenium and represented that they will run full spectrum tests <br /> as part of their water quality monitoring plan. <br /> Loveland Ready-Mix Concrete has collected over three years of baseline groundwater <br /> quality data and is committed to continue with quarterly monitoring throughout the <br /> life of the mine. At a minimum, results will be submitted to the Division with the <br /> annual report; however, any obvious discrepancies or changes to established baseline <br /> values will be immediately provided to the Division. <br /> If you have any questions or require additional information, please advise. <br /> Thank you, <br /> It <br /> Stephanie Fancher-English <br /> Loveland Ready-Mix Concrete, Inc. <br /> cc: file <br /> attachments <br />