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backfilling and final grading has been completed in an area, the top of the slope and the side <br /> slopes will be seeded as soon as practicable (based on first available seeding season). <br /> Since reclamation will take place concurrently with mining, large and long-term topsoil and <br /> overburden stockpiling is not anticipated. Topsoil and overburden stockpiles will be configured <br /> to have side-slopes no steeper than 2HA V. If the stockpiles are inactive for more than one <br /> growing season they will be seeded with the fast growing grass seed mixture in the table below. <br /> However, since the stockpile materials will continually be used for reclamation, the stockpiles <br /> will likely be disturbed on a frequent basis and seeding the stockpiles may not be practical during <br /> the course of the operation. If stockpile seeding is not used, surface roughening will be <br /> maintained to limit wind and water erosion. <br /> Stockpile Grass Seed Mixture <br /> Grass Species Rate <br /> (lbs PLS/acre) <br /> Intermediate Wheatgrass 5.0 <br /> Blue Grama 1.0 <br /> Triticale(sterile hybrid) 1.25 <br /> Rates are for broadcast seeding. <br /> In order to gain an understanding of the extent of the mining operation, it is helpful to know the <br /> acres disturbed by different aspects of the mining operation. Each aspect is listed in the <br /> following table with associated disturbed area. The table illustrates a point in time where the <br /> mining disturbance could be at its maximum. Since the proposed Harmony Windsor Site is so <br /> small, it is assumed that the potential greatest mining disturbance includes the whole permit area. <br /> During this scenario, no reclamation will have been performed, leaving approximately 3,960 feet <br /> of side slope for backfilling. In the worst-case scenario, reclamation will begin and progress <br /> once all mining is completed. <br /> Mine Operation Aspects and Disturbance Areas <br /> Aspect Mining Operation Disturbed <br /> Area(acres) <br /> Active Mining Area: <br /> A 1. Near vertical un-reclaimed pit side slopes (3,960 linear ft). 6.5 <br /> 2. Un-reclaimed pit floor. <br /> Miscellaneous Disturbed Areas: <br /> B 1. Internal haul roads. 3.4 <br /> 2. Other. <br /> Final Reclamation: <br /> C 1. Seeding. NA <br /> 2. Re-seeding <br /> Total Disturbed Area 9.9 <br /> Harmony Windsor Site <br /> DRMS Limited Impact 110 Permit Application Page 9 <br />