2010-01-20_GENERAL DOCUMENTS - M1978079

Home Browse Search

Colorado Division roject of Reclamation, Mining & Safety Levicy Bond Revocation Project 2009, continued... were graded to promote non-erosive drainage. During construction, the main adit opening proved to be = - unstable, due to a large amount of rock fall into the backfill area. Therefore, it was determined that the final few feet of the adit opening, located above the main ,, portal, were too dangerous to backfill. It is expected that the remnant opening will naturally backfill within a c....,.. ' ; .f` few years. The main opening of the adit is closed, and 4, ' visitors to the site are not able to access the main adit. , . , :, The project was ready for final inspection on September - 18, 2009. :R ' C* y ''1 . . Change Orders There was one change order for this project. Change Order #1, removed the revegetation requirement from Portal following closure. The remaining opening is approximately the project. DRMS determined that revegetation was not three feet deep, and was determined to be too dangerous to complete the backfill,due to very loose,unstable rock necessary at the site, due to the high elevation and lack of vegetation within the surrounding area. The project 111 cost was reduced by$495.00 as a result of Change Order #1. The final project cost was $24,500.00. Future Monitoring And Maintenance a This site should be monitored in the spring of 2010 toy ensure that the final grade sustained the spring snowmelt without significant erosion. Additionally, the closures should be monitored every 5 years to ensure their long- term effectiveness. r k Backfilled and graded exploration pit. J d Project Data • t -4- ..'""' f� ' ' ;; Levicy Mine Revocation Project i X444' ,r, de ,,. • • ...� 3 closures,earthwork. Completed I8-September-2009 .-; +' Construction Cost: +' $24,500.00 View of the backfilled adit and graded waste rock dump.