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• -I1- • III. Cultural and Historic Resources (Rules 2.04.4 and 2.05.6 The applicant has provided information on cultural and historic resources in Section 2.9 (pagges 2.587 - 2-592), and in Appendix K. Numerous cultural resource studies have been conducted on lands within the Trapper Mine Plan boundary. A majority of area has been intensively surveyed with the remaining acreage located in areas of low ground visibility and/or steep or disturbed terrain, subjected to a reconnaissance survey. A total of twelve archaeological sites (9 prehistoric - 3 historic) have been located in the area of the Trapper Mine. Of the twelve sites, four are located near but lie outside the present mine plan boundary. Of the remaining eight sites, four are to be impacted by proposed mining. It has been recommended that sites SMF290/999 within the mine plan area and SMF948 outside of the mine plan area are eligible for nomination to the National Register of Historic Places. In current plans, however, neither site will be directly impacted by mining oper- ations. Pursuant to Rule 2.07.6(2)(e), the Division finds that the mining operation will not adversely affect any publicly owned park or place listed on the National Register of Historic Places. The operation is in compliance with the requirements of this section. IV. Geology (Rules 2.04.5 and 2.04.6(1)) The Division has reviewed the information provided by the applicant in Section 2.7 (pages 2-346 - 2-401 and 2-452 - 2-454) and Appendix I for compliance. The applicant has conducted an analysis to determine the physical and chemical properties of the overburden. Composite samples of each major strata from 22 drill holes, Located on approximately 5,000 foot centers across the proposed per- mit area, were taken for analyses. The results of this study indicate that certain strata in the central and eastern portion of the proposed permit area contain high levels of sodium. These strata occur outside of the areas to be disturbed during this permit term and will be considered in future applications. Issues associated with the high levels of sodium will be resolved prior to approval of mining activity in the areas of concern. The operation is in compliance with the requirements of this section. 2.05.6(3) and Water (Rules 2.04.5, 2.04.7, 2.05.3 The Division has reviewed Sections 2,7„ 4.8, and Appendices P and Q of the permit application of compliance. The sediment control system at the Trapper Mine includes a series of diversions, sixteen sediment ponds, and one inactive pit to control sediment generated at the site. The Soil Conservation Service method was used for estimating peak flows. Routing procedures for pond designs and simple Homographic techniques for culvert sizing have been used. The method used for sediment yield estimation was one proposed by the applicant which assumes that sediment yield is directly proportional to the annual runoff for alI disturbed sites. The Division has verified the estirretes