Laserfiche WebLink
<br />. The underground development waste will be hauled to the <br />disposal site in dump trucks or scrapers. The trucks will dump <br />in a pattern to allow no more than 2' of uncompacted fill when <br />spread. The scrapers will deposit lifts of 6-12". The refuse <br />will be compacted in lifts of no more than 2' with a sheep's <br />foot roller or other suitable means. The Drawing 2.05.3(9)-2 <br />in correlation with the Proposed Surface Disturbance Map 2.05.3 <br />(2)(b)-1 and the Final Contour Map 2.05.4(2)(c)-1 show the <br />fill to date and the projected room for fill. The total estimated <br />volume of waste disposal is 415,000 cubic yards, of which <br />approximately 73,000 cubic yards has been placed. <br />Reclamation of the underground development waste disposal <br />area will be to cover the waste with overburden, cover the over- <br />.. burden with topsoil, and revegetate the slopes. Present projections <br />are to cover the final waste slopes with 3.5 feet of 'nontoxic' <br />overburden. The 3.5 feet vertically on the 3.5 h:l v slope <br />leaves a 12 foot horizontal overburden bench to work on. The <br />• overburden will be dumped in place with trucks or scrapers, then <br />spread, compacted, and graded. Overburden requirements calculated <br />from Drawing 2.05.3(9)-2 are 73,000 cubic yards. The access road <br />will be graded into the overburden cover, leaving a road cut <br />slope and a fill slope of 2 h:l v. Drainage will be maintained <br />on the inside of the road, and a dirt berm will be built on the <br />outside of the road. The grade of the access road will be 79. <br />During final reclamation of the underground development waste area, <br />the road will be regraded to the design slope. <br />_ The topsoil will be spread 4-6" thick to average the 5.3" <br />(refer to Section 2.05.9) available on part of the area. The <br />placement of the topsoil will be done by dumping topsoil on the <br />top of the overburden slope and spreading it down the hill with <br />a dozer. A calculated volume of 14,500 cubic yards of topsoil <br />will be needed for the entire disposal area. Topsoil stockpiled <br />from the proposed D-seam portal and proposed sediment pond area <br />- • will be used in the underground development area as far as it <br />goes. .The remaining area will have overburden used in place of <br />topsoil for revegetation. <br />RF,VISEO November 15. 1983 123 <br />