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May Day Idaho Mine Complex 112(d) Permit Application <br />Further descriptions of this and other soils in the permit area are presented in Attachment 1-1. <br />2.0 Description of Soils <br />The following areas directly applicable to mining activities within the permit boundary were <br />evaluated in the field: <br />2.1 Areas within Buffer Areas of Operational Areas <br />These areas potentially may be disturbed for either expansion of operational areas or road <br />expansion. Areas inspected included: <br />• The operational areas at May Day No. 1, May Day No. 2, Chief and Lamb; and <br />• Proposed exploration roads. <br />These areas allowed for inspection on already disturbed cuts. The soils are typical of the <br />description of the Nordical Stony soils and are dominated by medium to coarse, angular stones <br />(>15%) as shown in Plate 1. <br />2.2 Operational Areas <br />Operational areas were characterized by essentially being graded to weathered bedrock. There <br />was no evidence of soil development in these locations. <br />Areas that have not been recently accessed for operational purposes (e.g. Lamb Operational Area <br />and old roads near the Brooklyn and 810 adits) showed signs of natural regeneration (Plate 2). <br />2.3 Location of Augmentation Pond <br />The proposed augmentation pond is located in the Idaho Operational Area. The soil in this area <br />is composed of gray, silty clay material with occasional gravels to a depth of approximately 14 <br />inches. Munsell values were 3, indicating reasonable (5-10%) organic matter concentrations. <br />Below this depth, the gravels increased significantly and a spade could not be advanced beyond <br />this depth (Plate 3). <br />2.4 Access Road <br />The access road is cut through three parent materials: <br />• Soils in the upper part of the road are formed on colluviums terrace deposits (Plate 4); <br />• Soils in the lower part of the road are formed on sandstone of the Morrison Formation; <br />and <br />Soils on historical tailings within the floodplain. <br />Soil development was evident in the upper part (0-6") of the colluviums. Below 6" gravels still <br />dominated the soil profile until contact with the sandstone of the Morrison Formation. <br />May Day Idaho Mine Complex 112(d) Permit Application <br />Revised August 10, 2017 <br />