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1 ' Bartle Mountain Rwourcea, Ina i 112 Permit Modification ' reduced to a 15 h width to produce an overall slope configuratJon not steeper than 3H:IV. The waste rock disposal azeas aze shown in plan view on Figure C-1. ' D.3.2 Site Description ' D.3.2.1 South Waste Rock Disposal Area ' The South Waste Rock Disposal Area lies noti~t of the plant and crusher area, and south of the Rito Seco. Natural ground slopes at the site vary from 2H:1 V to 20H:1 V and average approximately 12H:1 V, or eight ' percent. The vegetation is characterized as sagebrush is and is discussed in Exhibit J of the approved permit. Soils aze of the Blac4chall gravelly sandy loam and aze discussed in Exhibit I of the approved pert~tit. ' The South area was originally designed to covert approximately 125 ' acres with a storage capacity of approximately 21,300,00[# tons of waste rock. The currently proposed disposal area has been reduced in size by approximately 60 percent to cover a maximum of 50 actles. ' A geotechnical field investigation program was t~onducted as part of the original application. This program is discussed in Section D.3.3.2 and ' Appendix C of the approved permit. The investigation vindicated the site is underlain by relatively deep colluviaUalluvial deposits c}f silty and gravelly ' sands similaz to those found elsewhere on the project sits. ' D.3.2.2 Waste Rack Disposal Area B Waste Rock Disposal Area B is located west of th~ West Pit and north ' of the Rito Saco. The natural ground slopes of this site vary from 7H:1 V to IOH: iV, averaging approximately IOH:IV or 10 percent. Vegetation at this site is characterized as sagebrush flats in the lower reached and pinyon juniper ' woodlands in the upper reaches. Soils at Area B aze!primarily Blackball sandy loam. The approved permit (Exhibits I and J) contains a complete discussion of soils and vegetation within the project aze$. The permitted Waste Rock Disposal Area B covers approximately 18 ' acres and is designed to store 1,200,000 tons of waste rdck. In the proposed modification, approximately 864,000 tons of additional waste rock will be ' %Y D> sect o.