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Annual Report — 2014 <br />Henderson Mine and Mill Reclamation Activities <br />Permit No. M- 1977 -342 <br />Viewpoint (imazapyr and aminocyclopyrachlor) was applied to parking areas, substations, building <br />perimeters and fence lines for ground sterilization and Rodeo (glyphosate) was added to eliminate all <br />existing vegetation. <br />In total, approximately 145 acres were sprayed in and around the Henderson Mine, URAD Mine and <br />county road right -of -ways. <br />1. 4.2 — Water Quality Data <br />Water quality data will be provided in the Annual Water Quality Data Report, due to the DRMS, per the <br />approved Groundwater Management Plan (TR -16). <br />2.0 Henderson Mill <br />2.1 Disturbance <br />Approximately 6 acres were disturbed in 2014. This is primarily attributed to the continued rise of the <br />tailing impoundment. Disturbance from ongoing activities associated with topsoil salvage and gravel pit <br />operations have been accounted for in previous years, however no new disturbance occurred in 2014. <br />2.2 Interim Reclamation <br />Interim stabilization efforts included the salvage of 338,150 cubic yards of topsoil/growth media from <br />inundation areas along the upstream side of the tailing impoundment. The material was placed in the <br />North and Ranger Gulch stockpiles, which is situated on the northern end of the impoundment. <br />Routine maintenance of erosion and sediment control structures was carried out in 2014. <br />2.3 Other Activities <br />2.3.1— Weed Control <br />For 2014, Henderson Mill received weed treatments in June and August totaling 450 acres. The two <br />treatments covered the following areas: around all shops and mill parking lots, roadsides around the <br />tailing pond, the northern non - industrial areas, the haul roads, the upper canal road, on and below the <br />dam, and the portal. <br />These areas were treated for the following noxious weeds: Houndstongue, Canada Thistle, Musk Thistle, <br />Yellow Toadflax, Mayweed Chamomile and Oxeye Daisy. <br />The herbicides used for treatement include: Weedestroy (2,4 -D Amine), Habitata (imazapyr), Tordon 22k <br />(picloram), Viewpoint (imazapyr and aminocyclopayrachlor), Roundup Pro (glyphosphate), MSO <br />(methylated oil surfactant), Induce (nonionic surfactant), and Blue Hi -Lite indicator dye. <br />Additionally, all fuel storage locations (gasoline, diesel and propane) were treated with Roundup Pro (soil <br />sterilizers to prevent any vegetative growth). <br />2.3.2 — Water Quality Data <br />Water quality data will be provided in the Annual Water Quality Report, per the approved Groundwater <br />Management Plan (TR -16). <br />Page 2 <br />