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<br />1 <br />• Highly erodible soils or situations will be avoided whenever possible. <br />' 3.3 BMPs -DESCRIPTIONS AND SPECIFICATIONS <br /> BMPs will be selected and deployed to control erosion and prevent sedimentation on a site- <br /> specific basis. Various methods, prnctices and structures will be 6ofistically blended to achieve <br /> the desired level of control and protection. The BMPs contained in The Plan have been <br /> selected based on their ability to effectively ehminate or reduce erosion and sedimentation <br />' during development, operntion and reclamation of the Yankee Gulch Project. The main criteria <br /> to be considered when selecting BMPs for a particular application are the specific erosion or <br /> sedimentation goals to be achieved, site-specific physical charncteristics, cost effectiveness, <br /> and BLM and Colorndo Division of Minerals and Geology ("CDMG") acceptance. BMPs will <br />' be tailored to meet the site-specific requirements to which they are applied A BMP evaluation <br /> matrix to select materials for specific applications may be used at American Soda's option <br />' (Appendix A). <br /> BMPs may be initially applied and/or reapplied during the project development, operational or <br /> reclamation phases. Surface water runoff impacts, and erosion and sediment transport from a <br />' site may be minimized or controlled by implementing the following BMPs: <br /> • Placing diversion stmctures to channel undisturbed runoff away from disturbed surfaces; <br />' <br /> Providing structures to collect, retain or treat runoff that contacts disturbed surfaces; <br />' Temporarily stabilizing areas during development and operation phases, and pertnanently <br /> stabilizing and contemporaneously reclaiming them as operations are completed; <br />' Locating roads and other facilities where their actual or potential effect on water quality is <br /> minimized; <br />' Implementing good housekeeping prnctices such as proper stornge and spill prevention, <br />especially when hazardous materials are handled; <br />' Properly designing, constructing and maintaining the project and the necessary control <br />structures and practices in a professional and workmanlike manner. <br />' Temporary BMPs will be designed for short-0urntion periods or until pemranent BMPs are <br />implemented Temporary BMPs will typically be used for periods up to one yeaz or essentially <br />one winter and spring runoff season, but may be used for longer periods if appropriate. <br />' Temporary BMPs may require significant maintenance depending on the extent of surface <br />disturbance and on the intensity and duration of storm events that occur prior to implementation <br />of pemranent BMPs. <br />' The primary differences between temporary and permanent BMPs are the design life and the <br />materials used. Permanent designs and materials will normally be used preferentially over <br />temporary ones. Under most circumstances, the project component life or the magnitude of <br />' component disturbance associated with the Yankee Gulch Project components would warrant <br />the use of permanent options. Permanent BMPs may function as temporary BMPs, but the <br />reverse is usually not true. The applicability of BMPs is imdicated on Table 1. <br />' Americm Soda. LLP. 3~ <br />Soil Conurvation. Erosion and Sediment <br />CooUOI. Ralamatloq a~ Revegeulion Ran <br />' (k~o6er 28. 1998 <br />