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5.0 STORMWATER MANAGEMENT CONTROLS <br />5.1 SWMP Administrators <br />The SWMP Administrators will be Matt R. Carnahan and Aaron Atkinson of Four Corners <br />Materials. The SWMP Administrators are responsible for developing, implementing, <br />maintaining, inspecting, reporting and revising the SWMP. The activities and <br />responsibilities of the Administrators shall address all aspects of the SWMP. <br />5.2 Identification of Potential Pollution Sources <br />Table 2 provides a list of typical materials that will be used; activities that will be <br />performed as part of operations; and the potential pollutants sources that may impact <br />stormwater. The locations of these potential pollutant sources are identified on the site <br />map. <br />5.3 Best Management Practices (BMPs) for Stormwater Pollution <br />Prevention <br />5.3.1 Structural Practices for Erosion and Sediment Control <br />Descriptions and locations of structural site management practices which will minimize <br />erosion and sediment transport; such as temporary seeding, soil roughening, straw <br />bales, sediment control logs, silt fences, temporary diversion dikes and ditches, <br />sediment basins, sediment traps, rock filter berms, and temporary slope drains, are <br />listed in this plan. The proposed sediment /settling ponds will be situated within the <br />area of the former Borrow Area B of the Ridges Basin Dam project located in the <br />northern portion of the property. An existing grouted riprap drainage rundown is <br />located along the northwest portion of the property. Structural BMPs to minimize <br />erosion and sediment transport that will be implemented where necessary at the <br />project site are provided in Table 1. Locations of these structural BMPs are shown on <br />the site map. BMP installation details are provided in Appendix D. <br />Table 1. Potential Pollutant Sources and Proposed Best Management <br />Practices (BMPs) <br />Potential Pollutant Source: Disturbed and stored soils <br />Source ID Number (SIDN) — 1 <br />Source (PS) — Yes <br />Pollutant Proposed BMP: — 1. Grubbing limits are defined by existing fences, and all <br />employees will be informed of these limits prior to any site disturbance. The existing <br />fences are clearly marked and visible. 2. Existing vegetative ground cover will remain in <br />place until such a time that the construction schedule necessitates removal of the <br />ground cover. 3. Temporary berms will be placed as needed. 4. Silt fence barriers will <br />be used where needed. 5. Straw bale and /or erosion control Togs will be strategically <br />placed to prevent drainage from the property. <br />Animas Glacier SWMP February 2012 <br />P. 7 <br />