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17. No sections of the roadway or fill are within the 100 year floodplain of Tuttle Draw. <br />18. Based upon the horizontal curves and super elevation of 4%, the recommended speed of <br />the detour road will be 25 miles per hour which is comparable to that of the existing <br />route. There will be no stop signs or passing lanes for the main route. The existing route <br />has straight road but does have a stop sign and a 90 degree turn. The detour length is <br />4,550 feet while the existing road to get to the same point is 4,800 feet in length. <br />19. In areas where the road drainage must pass from one side to the other, 16" diameter <br />corrugated metal pipes will be placed at approximate 250 feet intervals below the <br />roadway. These installations will follow State Highway Department specifications. <br />Culverts exiting on fill will be protected from erosion by use of riprap or other means. <br />20. Montrose County has agreed to the plans and has approved of the actual construction <br />based on inspections, reports, etc. Once the road is acceptable, Montrose County will <br />assume the road and will conduct the maintenance. This was done immediately after its <br />installation in the year 2002. <br />21. Once the detour is abandoned, it will be reclaimed. Chip seal surface will be excavated <br />and stockpiled for use in the permanent construction of BB Road west of the Sunshine <br />Ranch Corner. The exact location of the stockpile area has not yet been determined. <br />The road was designed using an accurate aerial topographic map, site survey points for the road <br />centerline and Survcadd civil engineering software working inside AutoCad 14. As of the Mid <br />Term review of 2006, the BB Detour Road has functioned well since its installation and when <br />the paved portions of BB Road and 2700 Road are restored, the BB Detour Road will be <br />removed. <br />O. Northeast Perimeter Haul Road <br />Professional engineer certified specifications for the intersection with 2700 Road can be found in <br />Attachment 2.05.3(3)-8. <br />P. Restoration of BB Road and 2700 Road <br />Two paved roads will be restored as part of the reclamation of the New Horizon Mine. These are <br />sections of 2700 Road and BB Road East of 2700 Road and can be seen on Map 2.05.3(3)-16 in <br />both plan view and profiles. Please see Map 2.05.3(3)-13 for the typical section of how these two <br />paved county roads will be restored. Significant compaction of the underlying fill was required <br />by Montrose County prior to re -paving. Montrose County has approved the plans shown on the <br />Page 2.05.3(3)-37 October 2015 (TR -69) <br />