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4.3 Erosion and Sedime~ontrols • <br />The site access points will be paved to prevent carrying dirt and materials into the highway. The <br />interior haul routes will be stabilized by water applications for the life of the mine. The routes <br />outside the active mining azea will be revegetated and maintained. <br />Stockpiles have the potential for releasing sediment to stormwaters. Topsoil and overburden <br />material generally is kept so that a reserve is available for the anticipated use during the current <br />year. This practice minimizes the amount of disturbed ground surface which would be <br />susceptible to erosion by stotmwater runoff. All topsoil and/or overburden stockpiles will be <br />seeded with a fast growing cover crop to protect them from wind and water erosion, in the event <br />they are to be left undisturbed for more than one growing season. During construction of the <br />stockpiles, silt fencing will be placed on the long dimension of the back side to prevent spilling <br />and additional suspended sediments in stormwater flows. These fences are removed following <br />the completion of the stockpile. The stockpiles will also have erosion control ditches cut at the <br />base to prevent the transport of sediment. A detail of the ditch is included at the end of this <br />narrative. <br />A stormwater quality detention pond will be constructed on the north and south sides of the main <br />access road. These ponds will be sized to allow for settlement of suspended solids transported <br />from the processing area. No chemicals or flocculants aze expected to be used with these settling <br />ponds. However, flocculants aze expected to be used in the wash plant discharge for the <br />production of concrete aggregates. <br />Revegetation of disturbed azeas remains the most efficient and economical Best Management <br />Practice (BMP) for reducing sediment transport from large azeas. Roots hold soils in place and <br />surface growth filters sediment and reduces runoff velocities causing deposition of suspended <br />soil particles. <br />Reclamation and vegetating disturbed areas will be an ongoing process to reduce soil erosion at <br />the site. Revegetated azeas will be mulched following seeding to prevent erosion prior to the <br />establishment of the plants. <br />Mowing will provide a form of weed control and appropriate chemicals will be used to control <br />particularly hardy varieties of weeds. Any weed killers used must be compatible with use near <br />waterways. For example, Roundup should not be used near running water. <br />4.4 Inspection and Maintenance <br />Preventative inspections for the vehicles located on site will occtu on a daily basis. All vehicles <br />will be checked for signs of leaks or other potential problems. Any problems identified will be <br />corrected immediately. Monthly monitoring inspections of the vehicles will be conducted and <br />documented on the attached fotms. Preventative maintenance for all the equipment will be <br />conducted on a regular basis and documented on the same forms. <br />Preventative inspections for the crushing and screening equipment and the asphalt plant and <br />concrete plant will be conducted on a monthly basis. Any information regazding maintenance <br />needed qr performed will be noted on the attached forms. <br />