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May Day Idaho Mine Complex 112 (d) Permit Application <br />r <br />LJ <br />(b) Acid Mine Drainage Containment Facilities <br />At present, it is not anticipated that any Acid Mine Drainage Containment Facility will be <br />required. If any such containment facility is required following inspection of the <br />proposed disposal area within the underground workings, a Technical Revision will be <br />submitted to the Division. <br />6.4.20(16) Quality Assurance and Quality Control Program <br />As described in Section 6.4.20(15), no designated chemical facilities will be constructed. <br />Accordingly, no Quality Assurance and Quality Control Program is required. <br />6.4.20(17) Plant Growth Medium <br />(a) Soil Survey Map <br />A soil survey map is presented in Exhibit C and the components are described in Section <br />I - Soils Information <br />(b) Site Specific Soils Investigation <br />A site specific soils investigation is presented in Section I - Soils Information. In <br />summary: <br /> <br />• the affected lands are located predominately on a single mapped unit - the <br />Nordicol stony loam; <br />• the unit is formed on Jurassic sedimentary rock as described in Section 6.4.20(8) <br />with slopes approximately 30-35°; <br />• weathered sandstone is predominate throughout the profile; <br />• topsoil is generally less than 6" and is mixed with weathered sandstone gravels <br />and cobbles; and <br />• areas that have been historically cleared (roads, benches) show very good re- <br />growth without any fertilizer or amendment. <br />• Soil salvaging and stockpiling will not be undertaken for the following reasons: <br />• the collection of topsoil on the steep slopes will be difficult; <br />• the separation of topsoil from the weathered bedrock would greatly reduce the <br />volume of topsoil to be salvaged; <br />• the limited area to store stockpiled topsoil; and <br />• the fact that natural regeneration on disturbed areas indicates that topsoil is not <br />required for reclamation. <br />(c) Analysis <br />Analytical data is presented in Section I - Soils Information. <br />?J <br />(i) In summary, the <2mm fraction is a loamy texture, with pH approximately 7.5- <br />8.5. Organic matter concentrations ranged from approximately 3-8% at the surface to <br />May Day Idaho Mine Complex 112(d) Permit Application <br />September 21, 2010 <br />16