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• Highly erodible soils or situations will be avoided whenever possible; • Soils of the Thirteenmile Creek Tongue of the Green River Formation (I'hirteetunile Tongue) will be avoided whenever possible to protect occupied anti potential habitat of federally listed threatened plant species and other endemic plants; and • Road, well pad, and facility placement will avoid disturbance to matun: ponderosa pine (Pines ponderosa) [tees whenever possible. 3.3 BMPs -DESCRIPTIONS AND SPECIFICATIONS BMPs will be selected and deployed to control erosion and prevent sedimentation on a site- specific basis. Various methods, practices and structures will be holistically blended to achieve the desired level of control and protection. The BMPs contained in The Plan have been selected based on their ability to effectively eliminate or reduce erosion and sedimentation doting development, operation and reclamation of the Yankee Gulch Project. The main criteria to be considered when selecting BMPs for a particular application are the specific erosion or sedimentation goals to be achieved, site-specific physical characteristic:>, cost effectiveness, and BLM and Colorado Division of Minerals and Geology ("CDMG") acceptance. BMPs will be tailored to meet the site-specific requirements to which they are applied. A BMP evaluation matrix to select materials for specific applications may be used at American Soda's option (Appendix A). BMPs may be initially applied and/or reapplied during the project development, operational or reclamation phases. Surface water runoff impacts, and erosion and seditnent transport from a site may be minimised or controlled by implementing the following BMPs: • Placing diversion structures to channel undisturbed runoff away fmm disturbed surfaces; • Providing structures to collect, retain or treat runoff that contacts disturbed surfaces; • Temporarily stabilizing azeas during development and operation phases, and permanently stabilizing and contemporaneously reclaiming them as operations are completed; • Locating roads and other facilities where their actual or potential effect on water quality is minimi~r~i; • Implementing good housekeeping practices such as proper storage and spill prevention, especially when hazardous materials are handled; • Properly designing, constructing and maintaining the project and the necessary control structures and practices in a professional and workmanlike manner. Temporary BMPs will be designed for short-duration periods or until permanent BMPs are implemented. Temporary BMPs will typically be used for periods up to c~ne year or essentially one winter and spring runoff season, but may be used for longer periods if appropriate. Temporary BMPs may require significant maintenance depending on the extent of surface Acouion Soda, L.L.P. 3-4 Soil Consavalion. &osion and Sediment Convol, Reclamation, and Revegeution Plan Oclo6er 28, 1998 Revixed APri19, 1999