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Division Comment <br />During the permitting process within the Division, one of the prescribed tasks is Financial <br />Warranty calculation for the proposed permit. The calculated bond for the site, based upon the <br />above criteria is $35,425 for completion of tasks necessary to complete the reclamation plan. <br />Reclamation at the site consists of ripping some areas, grading, topsoiling, and revegetation. <br />2. Rule 6.4.7(1) Exhibit G -Water Information <br />The following objectors raised the concern of how the operation may impact surface water in <br />the Middle Fork of the South Platte River and groundwater quality and quantity at and <br />around the site: <br />^ Linda Kukulski Miller -potential impacts to the water supply of the Middle Fork of the <br />South Platte River. <br />^ Gregg Cassarini -giving credence to water quality and water supply impacts during the <br />permit application review. <br />^ Curt Sayer -potential impacts to water quality of the aquifer supplying the homeowners <br />resulting from pollutants being disturbed in the river and water from the river rechazging <br />the aquifer; maintaining the hydrologic balance as a result of water use at the site; <br />unauthorized pollutants entering the river; interruptions to the flow of the river. <br />• Fred H. Wisely -alluvial nature of the substrata may make the aquifer and the river <br />susceptible to pollutants entering the ground from the gravel site and from runoff; site is <br />located in the floodplain. <br />• Robert L. White -potential contamination of aquifer <br />^ Kent Rolf- potential for pollution of aquifer. <br />DMG Response <br />The question raised by the above comments is related to Rule 6.4.7 (1) of the Construction Materials <br />Rules and Regulations, which requires the applicant to state expectations of the operation's direct <br />effects to surface or groundwater systems, and to Rule 3.1.6 (1), which requires that distwbances to <br />the prevailing hydrologic balance of the affected land and of the sunounding area and to the quantity <br />and quality of water in surface and groundwater systems both during and after the mining operation <br />and during reclamation shall be minimized. <br />The Applicant has submitted a mining plan for the site that specifically states that groundwater will <br />not be exposed. The Operator plans to mine to a depth of 10 feet. Three wells were drilled on the <br />site in order to identify the groundwater level. The shallowest groundwater detected in these wells <br />is 16 feet, 11 inches. Therefore the proposed mining depth of 10 feet is well above the groundwater <br />level. <br />The Applicant has also stated that the Operator will contain storm water onsite for up to 72 hours to <br />prevent runoff from the site. The Operator will not be storing any fuels onsite, therefore avoiding <br />the possibility of a spill or leak. The process water used at the cement plant will contain only fines <br />resulting from washing of the aggregate removed from the excavation. Therefore if any process <br />water is allowed to percolate into the ground, the fines contained in the water aze essentially the <br />