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EXHIBIT E <br /> Reclamation Plan <br /> The June 16, 2004 Revised 112 Reclamation Permit Application proposed that the final <br /> reclaimed use of the Duckworth Pit site would be open water for recreational purposes. The <br /> open water created would consist of two unsealed ponds, approximately 30 and 14 acres in size, <br /> with the remaining area of approximately 11 acres being vegetated. <br /> The purpose of this amendment application is to amend the proposed reclamation plan. The site <br /> was mined as planned, resulting in two ponds. Rather than leave the ponds unsealed, Martin <br /> Marietta has instead lined the ponds with compacted clay liners in order to form two water <br /> storage reservoirs. The liners underwent a 90-day leak test and were approved for water storage <br /> by the Colorado Division of Water Resources on November 28, 2016. The primary future (post- <br /> mining) land use is now intended to be developed water resources. <br /> The Duckworth Pit is located within the 100-year floodplain as defined in the Federal <br /> Emergency Management Agency's National Flood Hazard Layer.t The Weld County <br /> Department of Planning Services considers land located in the 100-year floodplain to be suitable <br /> for agriculture, recreation, and wildlife uses. Lined water storage reservoirs are compatible with <br /> these surrounding land uses and with the Weld County planning goals. <br /> Site reclamation measures are illustrated in Exhibit F. Reclamation of the site has created two <br /> lined reservoirs. Compacted clay liners were installed at both reservoirs, extending from <br /> bedrock to the top of the pit highwall. The clay liner cores were then overlaid with outer fill to <br /> form a protective barrier. The outer fill was graded to form slopes no steeper than 3H:IV. Site <br /> grading has created a stable topography that is consistent with post-closure land uses. <br /> Revegetation of the site is ongoing. All reseeding will be performed according to National <br /> Resource Conservation Service (NRCS) recommended practices. Based on NRCS guidance for <br /> other local projects having similar surficial soils, the following revegetation procedures are <br /> anticipated: <br /> • Grass seed will typically be planted in unfrozen soil between October 1 and April 30. <br /> • Grass seed will be planted with a grass drill or, where necessary, with a broadcast seeder. <br /> • The proposed seed mix and application rates in pounds of pure live seed per acre are <br /> described in the following table. <br /> • The area will be mulched, as stated in the reclamation cost estimate and recommended by <br /> the NRCS, with 4,000 lbs per acre of grass hay or straw. <br /> • Weed control practices will be implemented as required. <br /> The above procedures may be modified as conditions dictate. If a significant invasion of noxious <br /> weeds occurs, the area will be mowed periodically for control. Weeds will be mowed before <br /> https://www.fema.gov/national-flood-hazard-layer-nflil accessed September 26,2016. <br /> Duckworth Pit <br /> DRMS 112 Permit Amendment <br /> Page 5 <br />