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Operator's Outliine <br />C. Area SF is for all activities performed after extraction of the limestone. This <br />incbudes processing, stockpiling, product distribution, etc. <br />IV. Stormwater Management <br />A. All Stormwater management is to be done in accordance with the approved <br />Stormwater Management Plan. <br />B. Stormwater management facilities are to be installed by May 27, 1994. <br />C. InsT~ection of Stormwater management condition should be done, at a <br />minimum, in accordance with the schedule stated in the management plan. <br />During the summer months (May through September) all Stormwater facilities <br />should be checked after each thunderstorm that creates a significant amount of <br />precipitation (produces heavy flows). <br />D. The Stormwater management facilities (sediment basins, culverts, etc.) should <br />be maintained throughout the year. Normally sediment basins should be <br />cleaned out in the winter, but if they fill during the summer as a result of <br />unusually heavy storms they should be cleaned. Otherwise, the capabilities of <br />the system to control sediment could become ineffective and result in a possible <br />violation of the federal Clean Water Act. <br />V. Topsoil Removal <br />A. Whenever native topsoils are encountered, review the requirements for salvage • <br />and storage stated th the Mining Plan. <br />B. Wherever native topsoils are encountered, all efforts should be made to salvage <br />as much as possible. Stockpile the soil separate from other materials, protect it <br />from contamination with mining wastes or other materials, and protect it from <br />erosion. Topsoil stockpiling should not be done in drainage courses. <br />C. Protection by seeding should be done in accordance with the seed mixture and <br />methods described in the Topsoiling section of the Reclamation Plan. <br />VI. Mining Methods <br />A. Because the final topography to be established in the reclamation is to be <br />created in Areas MV and MS through mining, considerable care must be <br />exercised in the mining. <br />B. Use of the Bench Geometry Model (in the Mining Plan) <br />1. Before using this model, review the description in the Mining Plan. <br />2. The model is designed to aid Castle Concrete in determining the <br />appropriate bench step width in a particular area so the fmal average <br />slope gradient can be produced as close to design as possible. <br />3. Not utilizing this model may result in an average slope that is steeper <br />than allowed by the permit. <br />4. It is best to set up the model on a computer spreadsheet and do the <br />calculations there, as they are quite involved to perform manually. <br />Copies of the model are available in Lotus 123, QtramoPro, and • <br />SuperCalc formats. <br />Page 2 Pikeview Quarry Amendment <br />