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4.2 Travel Routes ~ Access Roads The access point into the site off of U.S. 50 will be paved with asphalt. All internal haul and access roads will be gravel and/or native ground. These routes will be stabilized using water applications as needed. They will continue to be stabilized in this manner until reclamation has been completed. 4.3 Revegetation and Mulching Revegetation of disturbed areas remains the most efficient and economical Best Management Practice (BMP) for reducing sediment transport from large areas. Roots hold soils in place and surface growth filters sediment and reduces runoff velocities, causing deposition of suspended particles. Any stockpiled topsoil and overburden is kept so that a reserve is available for the anticipated use during the current year. This minimizes the amount of disturbed ground surface which would be susceptible to erosion by Stormwater runoff. These stockpiled materials are not vegetated since they are disturbed often, and are expected to be removed within one year of deposition. Reclamation and vegetating disturbed areas will be an ongoing process to reduce soil erosion at the site. Topsoil stockpiles in the processing plant area will be seeded as they are put up to prevent erosion from wind and/or rains. Any weed killers used must be compatible with use near waterways since this site is in a floodplain. For example, Roundup should not be used near running water. Mowing will provide the predominant form of weed control, and apgropriate chemicals will only be used to control particularly hardy varieties of weeds. 5.0 Iaspgctioa and Maintenance The site will be inspected to insure that the BMPs are functioning well and any off-site discharges have the best water quality attainable from good management practices. Little discharge, if any, is expected from this site. Any surface flows will be mitigated by the vegetated areas, and haul roads will be maintained in good condition. A comprehensive inspection of the BMPS must be conducted no less than twice a year, and the inspection records should be available at the site with a copy of this Stormwater Management Plan (SWMP). The annual SWMP report should contain a summary description of the two comprehensive inspection reports as outlined in the permit requirements. The permit requires that the SWMP and reports be kept at the site for inspections by the Colorado Department of Health. A sample inspection form is included which may be modified as necessary. Note any additional water quality protection procedures directly on the report or bluelined drawing for later incorporation in the SWMP. Summaries of the inspection reports and revisions must be submitted in an annual SWMP report required by the CDPS permit. If unforeseen erosion occurs, the SWMP should be revised as necessary to improve Stormwater quality. -3-