2003-10-02_REVISION - M2001085 (4)

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Exhibit D -Mining Plan Activity on the 2.2 acre azea currently covered by M-2002-113 will not change upon approval of this amendment request. This azea will be used exclusively to provide access to the mine site from 120t1i Avenue. Towards the end of 2003 and before the 2004 construction season, reclamation of the mining area (approximately 35 acres) immediately south of and adjacent to 124'h Avenue, will be completed, so that this access route will need to take a different course across the Fulton Ditch. Following this change in the traffic pattern, which is shown on the Mining Plan Map, that portion of the 2.2 acres that will no longer be used will be reclaimed as required by M-2002-113. This amendment request also proposes an alternate crossing of the Fulton Ditch, as shown by the Mining Plan Map. This alternate crossing has been approved by the Adams County Board of Commissioners with its issuance of Conditional Use Permit No. 2002- 00081. Approximately 0.4 acres, including some new access road on the east and west sides of the Ditch and the bridge itself, will be added to the permitted azea of M-2001- 085. New access road will be raised approximately 12 inches, using native material, and topped with 6 inches of road base. Washed rock will be placed on top of the road base to minimize dust. The bridge will be constructed during the winter, when there is no flow in the Ditch. Concrete footers will be placed on both sides of the Ditch, 60 feet apart, and two flat bed rail cazs will be placed side-by-side on the footers, to create the span across the Ditch. The rail cazs have steel beds and typically carry in excess of 100,000 pounds. Dredging in the ski lake will be accomplished using a barge mounted siphon pump capable of pumping up to 500 cubic yazds per hour of sand and squeegee -material that was backfilled into the historic mining pit afrer coarser material had been removed in the 1970s. Siphoned material will be pumped directly through a 12 inch flexible discharge hose to the acreage of the 124th Estates Sand and Gravel Mine, as shown by the Mining Plan/Reclamation Plan Map. Dredging will occur between November and April so as not to interfere with water skiing activity in the lake. No material will be stockpiled on the property of the Henderson Water Ski Club; nor will the activity generate traffic on the property of the Ski Club. This material will be processed and transported from the site, as necessary. The Applicant expects to remove approximately 40,000 cubic yazds of material from five acres in the southwest portion of the ski lake. Exhibit E -Reclamation Plan All acreage of the access route from 120th Avenue to the mining acreage will be reclaimed as required by M-2002-113. Road base will be removed, and the access road will be ripped to loosen packed soil. Topsoil will be replaced with material stockpiled on the mining site, and the disturbed aze of the access route will be drill or broadcast seeded, using the grass seed mix and application rates approved for application to disturbed azeas of the 124E Estates Sand and Gravel Mine. Weed free straw mulch will be applied at a rate of approximately one ton per acre. A disc-type crimper, pulled by tractor, will be used to work the mulch into the soil. The proposed grass seed mix and application rates Application to Amend 124'" Estates Partners DMG Regular 112 Reclamation Permit M-2001-085 124'" Estates Sand and Gravel Mine Prepared by Scott Keen -September 2003 Henderson, Colorado