2022-09-07_REVISION - M1987171 - Laserfiche WebLink

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State of Colorado DEPARTMENT OF NATURAL RESOURCES DIVISION OF RECLAMATION,MINING AND SAFETY Page 3 of 13 II. Background Kiewit's Fountain Colony Pit mine is located in the County of El Paso,approximately two(2)miles southwest of Fountain,Colorado.The site is situated on the west side of Interstate 25,just south of Charter Oak Ranch Road.Access to the site is gained by heading west on Charter Oak Ranch Road to a private access road. The site has been operating under the authority of Construction Material Regular(112)Operation Reclamation Permit and the approved Reclamation Plan(CO Mine ID#M-1987-171).Extraction and processing of aggregates has been permitted since 1995.The Reclamation Permit and Plan was amended to provide 1.10 acres for a new access route in 2001.Additionally,the Reclamation Plan and Permit has been subject to three technical revisions.This updated Reclamation Cost Estimate(RCE)is being prepared to incorporate the changes proposed in the 2022 Technical Revision#4 to the Reclamation Plan and Permit. III. Description of Current and Anticipated Site Conditions The site is used for surface mining of sand and gravel and consists of approximately 313.9 acres as amended.Of this area, approximately 141 acres have been disturbed by historic mining activity.Of the acres disturbed,137 acres have been reclaimed (as reported by Kiewit). Presently,as recorded in the Notice of Temporary Cessation (2019),mining activity is currently inactive,while reclamation activities have been ongoing and nearly complete at all five mine phases. Phase III and Phase IV have been fully reclaimed,along with portions of Phase I,Phase II,and Phase V.Currently,will some areas in these phases require spot seeding and erosion control.Remaining areas of Phase I and Phase II remain undisturbed by mining. There are approximately 8 acres within Phase IV currently utilized as storage for construction equipment owned by the operator/permittee.Costs to remove the equipment are not included in this estimate because this phase is proposed to be removed from the Reclamation Plan and Permit as part of this Technical Revision. Erosion control measures currently on site include detention basins constructed using riprap.This RCE does not include the cost to remove the riprap,as this material will remain at the Site post-reclamation.As stated in the original Reclamation Permit and Plan,these control measures will help prevent erosion in order to benefit future development. Reclamation of the site will include revegetating the remainder of the disturbed areas of the Site,and slope stabilization. The cost estimate provides an update on the scope of the remaining reclamation work in conformance with a final site configuration of commercial/industrial development,as originally proposed in the Reclamation Permit and Plan. The operator does not have plans to disturb additional acreage over the next twelve months.Therefore,this RCE accounts for the reclamation of a total of 4.4 acres,considering the removal of Phase III and Phase IV,and portions of Phase I and Phase II,from the Reclamation Permit and Plan,as well as the current status of revegetation efforts. IV. Description/Justification of Cost Increase/Decrease The current reclamation cost estimate for the site is: $ 19,761 The previous site reclamation cost estimate was: $ 200,000 The cost decrease is a result of Phase III and Phase IV,and portions of Phase I and Phase II,being excluded from the Reclamation Permit and Plan,as well as the reclamation work that has transpired since the date of the most recent approved Reclamation Cost Estimate(2013).The majority of the Site has been successfully revegetated,aside from a number of small areas where revegetating was unsuccessful or mining disturbance never occurred. Exhibit L-Reclamation Cost Estimate www.sespeconsulting.com