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2.04.9(1) (a) <br />(a) Soil ??orizons. <br />•As of the drafting of this application, all surface disturbance <br />necessary for operating the mine has already occurred. Refer <br />to Drawing, 2.04.3(2)(a)-1, F..xisting Land Cse, for the surface <br />3isturbed areas. As of June 30, 1982, removal of the surface <br />facilities will begin. Refer to Section 2.05.4 and Figure 2.05.4(2)(b)-1 <br />for a narrative and schedule. Construction of the new portion of <br />relocated Highway 133 will have an alignment as shown on <br />Map 2.04.3(2)(a)-1. <br />A soils study has been conducted in the disturbed area of the mine <br />by SCS. In this survey the SCS used either soil series or soil <br />association as their mapping units. The surface of the disturbed <br />area has been determined as one mapping unit by SCS, i'nit 77C- <br />Breece Loam. This mapping unit has a small total acreage in the <br />study area and occurs on the floodplains of the P7orth Fork of the <br />Gunnison River. <br />• <br />Following is a description of the SCS Mapping Cnit for the distrubed <br />area: <br />h:apping Unit 77C-Breece Loam <br />Position: Alluvial fans, floodplains and terraces <br />Drainage: Moderately well drained <br />Slope: 1 to 6 percent <br />Soil Profile: Texture Thickness Permeability <br />Surface loam 0 to 19" "4oderate (2.0 to 6.0"/hr) <br />Subsurface Sandy loam 19 to 60" Rapid (7.0 to 20"/hr) <br />Underlying material is stratified sands and silts that have distinct <br />mottles and is over sand, gravel and cobble between 40 to 60 inches. <br />Bedrock is greater than 60 inches. <br />• <br />5-69 <br />nnwrccn ~~~.. it ino~ <br />