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culvert shall be crushed flat within the excavated trench. The <br /> trenches which result from the extraction process shall be <br /> backfilled to the original ground surface elevation. The backfill <br /> will be compacted in one foot (11 ) lifts. Note that in many <br /> locations, new hydrologic controls will be constructed in the <br /> location previously occupied by the culvert. In those locations <br /> where a rolled dip will be constructed at the location of a <br /> previously existing culvert, it may not be necessary to backfill <br /> the trench to the original ground surface elevation. Refer to Map <br /> 4, Hydrologic Structures. The ground surface at the outlet end of <br /> the culverts shall be excavated four feet (41 ) into the road <br /> embankment. The culvert shall be cut at the ground surface after <br /> excavation, and the end of the culvert will be crushed flat. The <br /> excavation shall be refilled and compacted in one foot (11 ) lifts. <br /> Any additional culvert materials or scrap encountered shall be <br /> collected and transported to the main facilities area for disposal <br /> by others. <br /> Removal. Culverts may be excavated and removed from the site at <br /> CONTRACTORS expense. If CONTRACTOR elects to completely remove <br /> culverts, the entire length of the culvert excavation must be <br /> refilled to original road surface elevation and compacted as <br /> described above (decommissioning) . Extracted culverts may not be <br /> stockpiled in locations other than in the vicinity of the Road <br /> project. All extracted culverts must be removed from the mine site <br /> prior to initiating revegetation efforts. <br /> Measurement and Payment <br /> There will be no measurement for payment for culvert removal and <br /> decommissioning operations, including regrading of excavations, <br /> necessary to accomplish Task 2. Payment for these portions of Task <br /> 2 will be reflected in a lump sum bid under Item 2 on the Bid <br /> Schedule. This lump sum bid will cover all costs for culvert <br /> excavation and crushing, filling of excavated areas, and removal of <br /> culvert remnants. Payment shall be as this task is completed and <br /> approved by the PROJECT MANAGER. <br /> TASK 3 ROAD GRADING <br /> Map 3 , Road Project Map, depicts the location of the road subject <br /> to reclamation during performance of this project. Execution of <br /> Task 3 will result in grading of road surfaces to achieve the road <br /> surface reclamation design specifications and elimination of the <br /> drainage ditch network. The drainage ditches are located along the <br /> inside portion of the roadway. Berms may be located along the <br /> outside edge of some portions of the roadway. <br /> Any trash or debris, including any which may be encountered in the <br /> vicinity of the project areas during completion of this Project, <br /> shall be removed to the main facilities area by CONTRACTOR for <br /> disposal by others. Additionally, it is possible that old, <br /> 9 <br />