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JD-8 Mine EPP-Stormwater Management Plan 4 <br /> 41111 <br /> • Straw Wattles. Straw wattles are not currently in use at the site, but may be employed to retain <br /> sediment during construction activities. Contractors whose onsite activities have the potential to <br /> affect stormwater may be required to prepare, submit, and implement a stonnwater management <br /> plan that addresses the specific site activities. These construction-specific activities may require <br /> short-term sediment controls including,but not limited to,straw wattles and silt fences. <br /> • Ditches and Berms. Ditches and berms are used to convey stormwater runoff toward catchments <br /> and to prevent excess stonnwater from entering facilities areas or eroding the waste rock piles. As <br /> described in Attachment A, perimeter berms have been constructed and will be maintained at the <br /> crest of the waste rock pile to route water away from the face of the pile and into constructed <br /> catchments. <br /> • Retention Ponds. The constructed catchment is located downslope from the eastern portion of the <br /> waste rock pile. Additional stonnwater retention ponds are planned for implementation during <br /> mining, as described in Attachment A. The purpose of these ponds or catchments is to retain <br /> stormwater and slow its velocity such that any suspended sediment is deposited and contained <br /> onsite. <br /> • Revegetation. The waste rock pile will be revegetated as soon as practicable after mining is <br /> complete. Concurrent revegetation of the lower waste rock pile could occur if and when the upper <br /> waste rock area is constructed. Revegetation will follow the seed mix and procedures described in <br /> the Reclamation Plan and EPP. The establishment of vegetation on the reclaimed facilities will <br /> reduce erosion and sedimentation from formerly disturbed areas. <br /> • Other BMPs. Additional BMPs may be used as necessary to check or direct water flow and <br /> prevent erosion and sediment transport. <br /> 4.3.4 Other Pollution Prevention Measures <br /> No other pollution prevention measures have been identified. <br /> 4.4 Preventive Maintenance <br /> Preventive maintenance will be conducted for the BMPs listed above. Routine inspections(similar to those <br /> described in Section 6 and Attachment B)will be conducted on a more frequent basis than the formal semi- <br /> annual BMP inspections of stormwater BMPs. The purpose of more frequent routine inspections is to <br /> identify problems and repair existing BMPs and to assess the need for additional stormwater BMPs before <br /> problems arise. <br /> Preventive maintenance will also include cleaning of catch basins, inspecting site equipment, removing <br /> debris from ditches, ensuring adequate freeboard for the lined fuel storage area,and other routine measures. <br /> 4.5 Good Housekeeping <br /> Good housekeeping practices will be followed during operations and reclamation at the JD-8 Mine. The <br /> site is currently in intermittent status and no trash is being generated. During operations, good <br /> housekeeping practices will include having adequate trash containers that are secured against animal <br /> intrusion and windblown debris, and are regularly emptied. Grounds maintenance during operations may <br /> include removing or neatly storing excess materials and equipment. Any spills of fuel or oil-based products <br /> will be cleaned up as quickly as possible using onsite or offsite spill containment and cleanup materials. <br /> Contractors will be required to clean up after themselves before leaving the site at the conclusion of their <br /> contracted tasks. <br /> 4122A.110601 Cotter Corporation <br />