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<br />-- r.~ ! <br />from entering water courses. Materials which are not a potential source of toxic <br />pollutants shall be disposed or controlled in a manner reasonably designed to <br />prevent them from entering water courses. <br />10. Upon discovery of solids, sludges, dredged or stockpiled materials, or outer <br />potential sources of pollutants entering a watercourse, the licensee or permittee <br />shall immediately make every reasonable effort to notify: <br />A Applicable local health departments and the Colorado Department of Health; <br />B. Owners or operators of municipal and domestic water supply intakes which <br />are located within twenty miles downstream from the site of the project; and <br />C, Owners or operators of other intakes or diversions which are located within <br />five miles downstream from the site of the prcject. <br />11. Measures shaft be taken to prevent the entrance of wet concrete into the <br />watercourse when placed informs and/or from washing of trucks. <br />12. Fill materials shall be clean as practicable. <br />13. Structural fit( or bank protection shaft consist of materials, which are placed and <br />maintained so as to withstand predictable high flows in the watercourse. <br />Hazardous areas should be clearly marked or made inaccessible to the public. <br />14. Concrete slabs which may be unstable are not authorized for use as riprap. Broken <br />concrete chunks are authorized but shat( be free of protruding reinforcing materials. <br />15. Areas disturbed by a project and which are suitable for vegetation shall be seeded <br />or revegetated to prevent subsequent soil erasion. <br />16. Discharges of dredged or fill materials in excess of that necessary to complete the <br />project shall not be permitted. _ <br />17. Discharges to waters of the State not included in the license or permit and not <br />certified in accordance therewith are not included within the terms of this 401 <br />certification. <br />18. To the extent reasonable and cast-effective, the activity submitted for certir""nation <br />shall be designed to minimize subsequent maintenance. <br />19. Frequent fording of a channel is not permitted. Temporary bridges ar other <br />structures shall be built if frequent crossings are necessary, provided that such <br />structures are approved by the federal licensing or permitting agency. <br />20. The discharge of materials which cause Boating debris, surface scum or film, or <br />color or odor which impair classified uses is not permitted. <br />,,1 <br />