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<br />of the ownership of such wells and document the location and ownership of any wells located within <br />600 feet of the permit area. In the event there are other wells located within 600 feet of the permit <br />azea, the applicant is encouraged to provide a map showing the location of such wells and <br />groundwater users. <br />21. The applicant states that internal ditches located on Tom Sharkey's property will be relocated or <br />abandoned. Please indicate which ditches will be removed and which ditches will be relocated. <br />Please provide engineering designs for the relocated ditches and provide a revised map to show their <br />proposed relocations. The operator will also need to provide written consent from the owners of the <br />various ditches for their removal and/or relocation. <br />~ 22. On Page 9 of the application, the applicant states that provisions will be made to keep the irrigation <br />waste ditch open that runs through the Highlands Lake, Buffs Lake and Lake St. Vrain. The <br />Division was unable to locate this ditch on the map. Please locate this ditch on the appropriate map <br />and state the provisions that will be made to keep~the waste ditch open. Please be awaze that if <br />mining occurs within 200 feet of the ditch, the applicant must demonstrate compliance with rule <br />6.4.19. Specifically, provide a notazized agreement between the applicant and the persons having an <br />interest in the structure or an engineering evaluation that demonstrates that the structure will not be <br />damaged by mining. <br />23. As required by Rule 6.4.7(b), please identify all known aquifers that may be directly or indirectly <br />affected by the proposed mining and reclamation activities at the S & H Mine operation. The <br />applicant should also characterize the geology and depths of the aquifers as well as pertinent aquifer <br />characteristics, if known. <br />24. The applicant has stated on Page 16 of the Reclamation Plan that the operator does not expect <br />prevailing hydrologic conditions to be disturbed. However, the applicant also states that both wet <br />mining and dry mining/dewatering methods will be used. The extent of each mining method is <br />unknown at this time. Therefore, there is insufficient information at this time to verify that there will <br />be no adverse impacts to surface and groundwater systems in the affected land and surrounding areas <br />both during and afrer the mining operation and during reclamation. <br />[n accordance with Rule 6.4.7(2)(b), the Division requests that the applicant identify and <br />characterize the aquifer to be mined in or through. The Division also requests that.the applicant <br />define or predict the cone of depression expected for any areas to be dewatered and dry mined <br />during the life of the operation. The cone of depression assessment should define, at a minimum, the <br />horizontal and vertical extent of drawdovvn expected. [f during the assessment, the applicant <br />determines that a dravvdown will occur offsite that may impact a current groundwater user, the <br />applicant should explain any mitigation measures to be implemented and trigger points [hat would <br />put mitigation measures into effect. <br />25. One of the concerns expressed by an objector is flood control and the potential for offsite impacts <br />related to flooding. Although no such information was provided in the application, it appears that <br />most if not all of the 1239.40 acre site lies within the 100-year floodplain (and possibly within the <br />10, 2~. & ~0-year floodplains) of the South Platte River. In the event of a significant Flood event <br />(l0-year flood or greater) it is likely that the existing pits and/or reclaimed lakes will be captured by <br />[he South Platte River. Accordingly, [he Division requests that the applicant provide the flood <br />4 <br />