Laserfiche WebLink
occupied bat habitat at this time, no net loss of available habitat would result from a permanent <br />closure. If the mine is to be inactive for any period to exceed one year, the opening must be <br />temporarily sealed to exclude both bats and humans from the mine workings. Closure of the <br />portal opening during reclamation would consist of a "permanent" closure, the design of which <br />would be developed in cooperation with CDRMS and BLM. Temporary and "permanent" <br />closures should be installed in such a manner so as not to entomb any stray bats that may have <br />entered the workings, i.e. using netting that allows exit, but not re-entry during a 24hr period. [f <br />reclamation commences immediately after cessation of mining activity, it is unlikely that bats <br />would have taken up residence in the mine. There is no way to predict that bats would ever <br />utilize this particular mine, and installation of a bat gate could be unnecessary. Because of <br />human safety issues, and long term maintenance costs, BLM would prefer that the mine not <br />remain open for a sufficient period of time to allow establishment of a bat colony. Consequently, <br />BLM requires that the mine be closed in a permanent manner sufficient to preclude entry by bats, <br />or when the mine may be idle for more than one year. <br />No Action Alternative -There would be no impacts to Threatened, Endangered, and Sensitive <br />Species. <br />Finding on the Public Land Health Standard for Threatened & Endangered species: <br />There would be no impact to Land Health Standards for Threatened and Endangered species <br />from the preferred alternative. <br />WASTES, HAZARDOUS OR SOLID <br />Affected Environment: Some potentially hazardous materials would be used during <br />mining. In addition, solid waste would be generated during these activities. Improper handling <br />of these materials and wastes can affect the local environment. <br />According to 29 CFR 1910.1200(g), the operator is to maintain a file containing Malarial Safety <br />Data Sheets (MSDS) for all chemicals, compounds, and/or substances which are utilized during <br />the course of construction, mining and reclamation operations of this project. This file is to be <br />available at all times at the site. Hazardous materials that could be found at the site include <br />explosives and flammable or combustible motor fuels. <br />Environmental Consequences/Mitigation <br />Proposed Action -General and cumulative impacts are not anticipated, but are dependent upon <br />responsible use of chemicals and immediate containment and adequate cleanup in the event of <br />spills. The impact of the proposed action on exposure to hazardous or solid wastes would be low <br />to moderate and short-term during construction and -ow and long-term during mining operations. <br />Preferred Action Alternative -With the addition of the following Best Management Practices, <br />the impacts from this altemative would be low and short term. <br />Signs would be posted on site that identifies potential hazards associated with its operation <br />including chemical hazards. <br />The mine site would be designed in such a manner as not to allow offsite runoff water to <br />14 <br />