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• mine access roads and pads <br />• utilities <br />• solid waste storage (trash, scrap metal, batteries) <br />• ventilation shafts (existing and proposed) <br />• power drops and associated pad azeas <br />• ore and waste bins at the Packrat portal <br />• retaining walls at Packrat portal <br />• drainage collection and diversion ditches with culverts <br />• mine sediment pond at Whirlwind portal <br />• powder magazine at Whirlwind portal <br />• magnesium chloride tank at Whirlwind portal <br />• ventilation fan at Whirlwind portal <br />• cyclone fences and gates at Whirlwind portal <br />• portable watchman's trailer <br />Approximately one third of the proposed surface disturbance at the Whirlwind Project will be on <br />•~ land that was previously disturbed and reclaimed by previous mine operations. The remaining azeas <br />to be disturbed have also been impacted, but to a lesser extent, by historic exploration activities <br />consisting primarily of road and pad construction. Surface disturbance on previously undisturbed <br />ground is lazgely confined to the waste pile expansion on the east end of the Whirlwind portal site. <br />The proposed Packrat portal azea disturbance is on land that has been completely disturbed in the <br />past, as seen on Map C-IA. The former waste embankment was previously reclaimed by regrading, <br />placing imported topsoil, and creating depressions on the land surface to provide pockets where <br />seed could more readily germinate. The majority of the reclaimed waste embankment will not be re- <br />disturbed. Only the upper portion of the waste embankment will be disturbed to allow for a portal <br />bench with some minor facilities. <br />Table D-1 below shows a breakdown of proposed surface disturbance between previously impacted <br />azeas and areas that were not impacted extensively by historic operations. <br />•~ <br />Whirlwind Mine June 07 D-7 <br />