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<br /> <br />(23) <br /> <br />(d) In order to ensure compliance with the Environmeuldal <br />Protection Agency (EPA) noise regulations and quidelin~s,'~h~ <br />lessee will: <br />(i) Quarterly assess community noise during const uction <br />and semi-annually thereafter until the noise appears to s.t~bilize <br />statistically. <br />(ii) Assess dominant noise sources if significant changes <br />occur in the operations. <br />(iii) Periodically, as scheduled with the District t <br />measure dominant noise levels of major components of the f< <br />subject to wear, induced noise fluctuations (i.e., crusher <br />loadout facility, etc.). <br />(iv) Furnish quarterly assessment to BLM within 3~0 <br />of data gathering. <br />Should the sensitive noise receptors or the monitor <br />indicate sound levels approaching or exceeding EPA stand <br />speech or sleep interference, the following steps and/or <br />other steps determined necessary by the BLM District Man <br />his designee together with the EPA representative msut b <br />to rectify the noise levels: <br />(i) Use of barriers or noise control methods. <br />(ii) Staging o£ helicopter operations from the mine <br />Hager, <br />ility <br />conveyor, <br />days <br />program <br />s for <br />y <br />r or <br />ation areas. <br />(iii) Stringent maintenance of crusher and loadout facilities to <br />minimize noise which might develop with wear. <br />(iv) Full enclosure of water/pipeline pump house. <br />(v) Application of control measures to ventilation f <br />installation as it is increased in flow or size. <br />These noise monitoring and mitigating requirements w <br />from CWI's noise program which is contained on pages IV-5 <br />6 of the final EAR, Chapter IV of the EAR entitled "Mitt <br />Measures Not Included in the Proposed Action", CWI's agr <br />to conduct its mining operations in conformance with this <br />stipulation is contained in subsection 4.5.1.9 of the rnin <br />plan. The specific steps required to comply with this le <br />stipulation are repeated again in our response to EPA's r <br />for additional information of CWI's monitoring programs. <br />would have no objections to the additional insertion of <br />requirements in a special condition to the mining plan, b <br />appears unnecessary. <br />re lifted <br />an d <br />acing <br />ement <br />lease <br />ng <br />se <br />vuest <br />hese noise <br />t this <br />N~I~, 1~~~ i .~ Y <br />