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K4= KelleyTruckinglnc. <br /> Earthrno\Ang Contractors <br /> 6201 McIntyre Street . Golden,Colorado 80403 <br /> Ph#(303)279-4150 Fax#(303)279-4799 <br /> Following further research into the possibility of accessing the mine at another point, other <br /> than the existing Watkins Road, the determination was made that the only feasible point of <br /> access to the mine will be Watkins Road south of E. 72"d. Kelley Trucking will be utilizing the City <br /> of Aurora's ROW for Watkins Rd. South of E. 72"d Ave. in order to access the mine. <br /> The mine is located in FEMA Flood Zone: X as shown and stated on the Adams County GIS map. <br /> There are no Waters of the United States located on site, or are there any within one mile of <br /> the site. <br /> During the public comment period the Division of Water Resources submitted comments <br /> regarding groundwater. Groundwater is not anticipated to be encountered during the <br /> operation of the mine; therefore, operations will be a minimum of two feet above the <br /> groundwater table. If groundwater does happen to be exposed, the exposed area will be filled <br /> in with a minimum of two feet of cover from the elevation groundwater was encountered. <br /> Once adequate cover has been placed the area will be delineated as a no dig zone. No water <br /> impoundments will be needed onsite. Since there is a Stormwater Discharge Permit issued for <br /> the site BMP's will be in place and maintained per the SWMP plan. <br /> The Nature of the material to be mined as defined by USCS is Silty Sand and is overlain with a 0 <br /> to 12 inch layer of topsoil. The thickness of deposit to be mined, as designed, is between 0 and <br /> 32 feet. Based on previously dug test holes at the property the vertical limits of the mine will <br /> not encounter any strata other than the material intended to be mined. All material being <br /> excavated at the mine will be considered a primary material and there is no secondary or <br /> incidental product. All material or strata within the design limits of the mine will be hauled <br /> offsite for use as construction material. <br /> In areas mining depths can be up to 32' deep. In these areas no highwalls are going to be <br /> created. Every effort will be made to adhere to the phasing plan of the mine, but in areas of <br /> deep cuts preventing the creation of highwalls will take precedent over the phasing. The <br /> material will be mined in a manner that will assure the safety of employees working at the <br /> mine. <br /> As stated previously the progression of mining operations will be in a north to south manner <br /> while operating with approximately 20-30 acres exposed at a time.The first cut will begin on <br /> the north side of the proposed mine with the operation making passes across the site in an east <br /> to west and west to east manner, moving further south with each pass. <br /> Market conditions will ultimately dictate the timeline in which the mine operates and phases its <br /> activity, but the intent is to have the 20-30 acre mining zone exposed at any one time. As the <br /> operation progresses toward the limits of the 4-6 month area reclamation of the mined area <br /> will begin, and will be conducted following the same pattern as the mining operation. <br />