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these areas, leaving an asphalt parking area, concrete foundations, concrete block buildings, and <br />beltline foundations intact. As part of reclamation operations implemented by the Division, all <br />asphalt and concrete materials were demolished and hauled to various locations near this facilities <br />area, placed against cut slopes and buried. Each area was graded to a geomorphically stable <br />landform designed to route drainage off the areas without inducing erosion. Where available, <br />topsoil was applied and the ground surface was severely roughened. Seed, mulch and fertilizer <br />were applied. <br />Mine Entries and Portal Areas <br />Reclamation work consisted of concrete demolition, backfilling and grading, drainage manipulation <br />and revegetation work. Numerous remnant concrete buildings, concrete foundations and beltline <br />foundations were left at the site. All concrete materials were demolished to below ground surface <br />level. The rubble generated at the mine entry areas was preferentially placed within the open <br />portions of the entries at Mines 1 through 4, outby the mine seals. Excess concrete was placed <br />against the highwalls at these entry areas. <br />Highwalls and cut slopes were backfilled with earthen materials generated on site. On each portal <br />bench, the slopes located below the benches were excavated to generate fill material for that area. <br />Each portal area was graded to establish appropriate surface water runoff characteristics. Little or <br />no topsoil was available to support revegetation efforts, so the in -place earthen materials were <br />amended with straw mulch and fertilizer, which were cut into the dirt using a dozer. Each area was <br />then revegetated using a Forest Service approved seed mixture. <br />An attempt was made to stabilize the steep slopes below the mine entries and the fill slopes <br />located below the benches by revegetating them. These areas were either hand or mechanically <br />roughened. Seed and mulch, or other surface stabilizer, were applied to each slope. On some <br />slopes, fertilizer was applied to enhance revegetation success. <br />Mid - Continent Resources constructed a double wide bulkhead in the original No. 1 Mine entry <br />which sealed the mine. The remnant entry was later backfilled by DRMS during reclamation but <br />the top of the entry was left exposed for historic preservation reasons. <br />Roads <br />The access roads were reclaimed by removing culverts, and grading the road prism so that upon <br />completion the road surface was angled toward the fill slope. All culverted drainage structures <br />were removed from the road system, excepting two at larger stream crossings. Numerous drainage <br />ditches were constructed in order to convey water from the inside of the road surface to the <br />9 <br />