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2.05-63 Rev. 11/96- PR07; 10/20 TR148 <br /> Temporary Surface Management Plan <br /> <br />During the course of day to day operations at the mine and during planned construction activities, <br />instances occur whereby it is necessary to utilize temporary management techniques to maintain <br />sound environmental practices. The goal of temporary surface management is to control soil erosion <br />and protect other resources, including air, water quality, and vegetation on small areas both in and <br />out of the disturbed area boundary. <br /> <br />Temporary surface management can be divided into two categories. The first includes revegetation <br />efforts carried out on small areas subject to re-disturbance within 5 years. The second category <br />includes physical management practices involving placing protective barriers or structures to <br />maintain sediment control or otherwise prevent environmental damage. <br /> <br />The temporary surface management plan is as follows: <br /> <br />1. Small areas that are disturbed will be seeded with the temporary seed mix if appropriate. It has <br />been determined during the first five year permit term that it is not necessary to replace seed <br />bed quality material in every instance i.e., the subsoil can be adequately reseeded for short-term <br />purposes. Seed bed quality material will be replaced if subsoil is not adequate. Other <br />management practices will be used as necessary depending on the site, such as roughening the <br />surface by ripping or scarifying, regrading or contouring, adding chemical soil stabilizers, <br />watering for dust control with or without chemical additives, mulching and other feasible <br />methods as deemed appropriate. <br /> <br />2. Temporary physical management practices will include the following: <br /> - temporary drainage ditches or berms to control surface runoff. <br /> - straw bales to filter sediment laden runoff and allow ponding for settling. <br /> - silt fence in the same application as straw bales. <br /> - rock rip-rap to prevent erosion. <br /> - temporary plastic (visqueen, etc.) ditch liners. <br /> - temporary drainage structures such as PVC pipe or other suitable devices. <br /> - pumping or transferring of water from one location to another to be treated in existing sediment <br />control structures or waste water treatment plant. <br /> - sand bags to divert runoff or contain runoff. <br /> - other practices that are deemed appropriate to prevent environmental damage. <br /> <br />The temporary surface management plan is intended to be used only on a short-term basis until more <br />permanent approved plans can be put into effect or constructed. <br /> <br /> Revegetation Maintenance <br /> <br />Soil erosion is controlled by using mulch, matting, chemical stabilizers, or other appropriate techniques. Rills <br />and gullies greater than nine inches deep are filled and stabilized. During revegetation, maintenance activities <br />are conducted parallel to the contour unless such activities prove hazardous to equipment and/or operators. <br />Mulch is used where needed after planting to control erosion until vegetation becomes established. Bare <br />patches of failed planting are prepared and replanted. Where there is evidence of poor soil