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30 01!18 18:91 $ 39S 985 9947 SRK DENVER 06 <br /> <br />BATTLE MOUNTAIN RESOURCES, INC. <br />ADEQUACY RESPONSES - ADDITIONAL INfORMAT1oN <br />PAGE 4 OF 7 <br />V is the flow velocity, S is the channel slope, and SG is the specific <br />gravity of the riprap material. The specific gravity is assumed to be 2.64. <br />This method was chosen for riprap selection because both channel gradient <br />and flow velocity are considered in the determination of dso- <br />20. The comment was satisfactorily addressed in the January 9, 1990 submittal. <br />21. The comment was satisfactorily addressed in the January 9, 1990 submittal. <br />22. The comment was satisfactorily addressed in the January 9, 1990 submitta~ <br />23. The comment was satlsfactarfly addressed in the January 9, 1990 subm <br />24. The comment was satisfactorily addressed in the January 9, 1990 submit <br />25. Please provide additional information on the monitoring requirements for <br />the tailings embankment and disposal process. This information should be <br />included in the monitoring report discussed in comment 11. In addition, <br />please provide a clearer description of the assumptions used in D.6- " <br />The a•sumptlan for friction angle fvr the tailings embankment mater a~s <br />should be verified through a laboratory test of shear strength. (Note: Jim <br />Pendleton with the Division contacted Rob porey on January 17', 1990 and <br />requested that the laboratory test be conducted.) <br />A comprehensive report of all monitoring to be conducted at the San Luis <br />Project is currently being prepared and will be submitted upon completion. <br />Attachment 2 contains a discussion of the assumptions used 1n Figure 0.6- <br />11. <br />BMR will commit to testing of the tailings embankment material far shear <br />strength and submitting the data at least 60 days prior to commencement <br />of embankment construction. <br />26. The comment was satisfactorily addressed in the January 9, 1990 submittal. <br />2T. The comment was satisfactorily addressed in the January 9, 1990 submittal. <br />28. The comment was satisfactorily addressed in the January 9, 199A .submittal. <br />29. The comment was satisfactorily addressed in the January 9, 1990 submittal. <br />30. Pease prov ide a wind erosion plan for periods of shut down or temporary <br /> cessation. <br />During periods of unexpected shutdown wind erosion will be controlled by <br />recirculating water through the tailings spigots or utilizing the water <br />trucks present an site, as necessary. Should temporary cessation of the <br />mining activities occur, a plan for temporary stabilization and wind <br />erosion control of the tailings will be submitted to the Division for <br />may. <br />