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assess potential environmental impacts to questionable groundwater resources. <br />A Sampling and Analysis Plan will be submitted prior to any sampling activities. <br />17. Addressing Rule 6.4.21(14), SPLP tests were conducted in order to characterize the <br />waste rock generated at this site. According to this rule, the ore must also be <br />characterized Please submit to the Division, a geochemical evaluation of the ore to be <br />mined Alternatively, if ore samples are not available at this time, commit to submitting <br />this information to the Division, for review and approval, prior to any stockpiling on the <br />surface. <br />Prior to ore being stockpiled on the surface, Cotter will submit to DBMS a <br />geochemical evaluation of the ore to be mined for its review and approval. <br />18. Addressing Rule 6.4.21(16), on page U -20, the EPP states that design and <br />implementation of the Drainage Design Plan will be overseen by a registered <br />professional engineer. Please commit to submitting an "As Built Certification" to the <br />Division following construction. <br />Cotter will submit an "As- Built - Certification" to the Division following the <br />construction of the Drainage Design Plan facilities. <br />19. Addressing Rule 6.4.21(16), on page U -20, the EPP states that Cotter Corp. will conduct <br />regular inspections of all structures. Please inform the Division of the anticipated <br />minimum inspection frequency interval. <br />Cotter will at a minimum inspect all structures one to two times per week when <br />the mine is active and one to two times per month when the mine is inactive. <br />8 <br />