Dibben’s Smelter Site
Site of an historic concentration mill and retorting operation. In 2001 confirmation of visible elemental mercury was found at the site. Sampling confirmed elevated levels of arsenic, mercury, lead, zinc, and silver. Forest Service initiated a CERCLA removal action at the site. Contaminates of risk driver concerns to human health identified were mercury, lead, and arsenic. Risk drivers of concern for fish and wildlife were mercury, lead, cadmium, copper, and zinc. Release of contaminates was suspected to be occurring through weathering of site soils. Possible human exposure via surface water of Leavenworth Creek, a tributary of South Clear Creek, a drinking water source for the Town of Georgetown. Contaminated soil was excavated from the "footprint” area, placed into a vault and buried in existing trench and backfilled. Excavated soil was replaced with topsoil and revegetated. A diversion ditch was excavated to divert water around project area and into Leavenworth Creek.