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` JJJ <br />Adams County <br />•�r <br />V <br />Arapahoe County <br />Aurora, CO <br />E-470 Public Highway Authority <br />Brighton, CO <br />22470 E. 6th Parkway, Suite 100 <br />Commerce City, CO <br />Aurora, 80018 <br />E470. <br />303.531.377 00 Phone <br />Douglas County <br />303.537.3472 Fax <br />Parker, CO <br />Public Highway Authority <br />Thornton, CO <br />May 4, 2015 RECEIVED <br />Department of Natural Resources ; 2015 <br />Attn: Tyler O'Donnell <br />.IDColorado Division of Reclamation, Mining & Safety <br />1313 Sherman Street Room 215 DIVISION OF RECLWATION <br />Denver, CO 80203-2243 MINING AND SAFETY <br />Re: Sandy Acres Pit, DRMS Permit No. M-1980-110 <br />Technical Revision No. 3 (TR -03) <br />Preliminary Adequacy Review <br />Dear Mr. O'Donnell: <br />Thanks for your May 01, 2015 letter regarding the above. Here are my replies to your questions: <br />1. Acknowledged. <br />2. Adams County still owns a 50' wide swath of old Nome Street that is now part of our connector ramp from US - <br />85 to E-470. They have approved our revised plans and we are in the process of submitting the contractor's <br />bonds, insurance and updated traffic control plans to them. They will then issue a grading and drainage permit. <br />3. The pavement at the scraper crossing will be closely monitored by the Authority and the Contractor. If damage <br />becomes evident, our contractor, Brannan Construction, will place a 6" thick layer of temporary asphalt <br />pavement on top of the existing concrete pavement as protection. They will make temporary repairs to any <br />pavement damage during the construction phase to ensure safe passage for road users. Once construction is <br />complete, they will complete any permanent repairs needed to return the pavement to its original condition. <br />4. In addition to the temporary asphalt pavement in 3 above, our contractor will remove the existing median to <br />facilitate scraper traffic across the road. They will also install fill dirt on either side of the road to make a smooth <br />transition to the adjacent grade for the scraper haul operation. They will install temporary pipe on the roadside <br />ditch to maintain drainage during the construction phase. When the project is complete, Nome St. will be restored <br />to its pre -construction condition including concrete pavement, raised median, roadside ditches and fencing. Any <br />disturbed areas will be re -seeded with native seed. <br />5. The contractor plans to use scrapers to haul and place the inert fill close to the edge of the pond. They will then <br />push the fill into the pond using a tracked dozer. If the fill operation causes the static water surface level to rise <br />significantly, they will cease operations to allow the water level to subside. <br />If you have any other questions or need more information, please call me at (303) 537-3712. <br />Sincerely <br />Neil Tho fP. <br />Director of Engineering & Roadway Maintenance <br />