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• Please have YR provide additional discussion on compaction of the reclaimed slopes for <br /> both the pit and the WRL. <br /> Slopes will be stabilized through track compaction and roughening and ripping prior to seeding <br /> and mulching. Please refer to the response to question 4 of the Division's Preliminary Adequacy <br /> Review. <br /> • Please have YR provide additional discussion on how the foundation of the WRL will be <br /> addressed prior to the placement of waste material. <br /> The area will be stripped of vegetation prior to start of fill activities within the WRL footprint. <br /> Vegetation, including mulched woody debris, will be utilized as backfill and or mulch or final <br /> reclaimed slopes. See Appendix 1 maps for additional details on WRL development. <br /> • Please have YR provide the location of each slope profile used in the slope stability <br /> analyses in the form of a transect line within an appropriate map or figure. <br /> Please see the revised Geotechnical Stability Exhibit. The slope profiles used to build the <br /> GALENA models are identified therein. <br /> • Please have YR include the material properties used in the stability analyses as part of <br /> the text within the Geotech Exhibit. <br /> Please see the revised Geotechnical Stability Exhibit. <br /> • Please have YR address potential impacts of water infiltration as part of the slope <br /> stability discussion and analysis for both the pit area and the WRL. <br /> Please see the revised Geotechnical Stability Exhibit. <br /> • Please have YR provide the following analyses for the following scenarios: <br /> 1. Slope stability analysis for the entire reclaimed mined bench slope (restraints <br /> including crest and toe of slope). <br /> 2. Slope stability analysis for the entire reclaimed mined bench slope (restraints <br /> including crest and toe of slope) under seismic conditions. <br /> 3. Slope stability analysis for the entire slope (restraints including crest and toe of <br /> slope) of the active WRL under seismic conditions. <br /> 4. Slope stability analysis for the entire slope (restraints including crest and toe of <br /> slope) of the reclaimed WRL. <br /> 5. Slope stability analysis for the entire slope (restraints including crest and toe of <br /> slope) of the reclaimed WRL under seismic conditions. <br /> Each of the above scenarios are evaluated. Please see the amended Geotechnical Exhibit. <br /> • Please provide the Division with discussion and rationale behind the seismic coefficients <br /> used in the slope stability analyses including why two separate coefficients are used <br /> between the mined bench slope and the WRL. <br /> Seismic coefficients are discussed in the revised Geotechnical Stability Exhibit. <br /> December 2021 34 9 Lewicki 81 Associates <br />