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9. Solids, sludges, dredged, stockpiled or other materials which are potential sources <br />of toxic pollutants, shall be controlled in a manner so as to prevent such materials <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 .other <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 ottaer intakes or diversions which are located within <br />five miles downstream from the site of the project. <br />11. Measures -shall be taken rto- prevent the entrance of wet concrete into the <br />'1 ~ watercourse when placed in forms and/or from washing of trucks.. - -~ . <br />12. Fill materials shall be clean as practicable. <br />13. Structural ftll or bank protection shall 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_inaccessibie to the public. <br />14. Concrete slabs which may be-unstable -are not authorized for use as riprap. <br />Broken concrete chunks are authorized but-shall be free ofprotruding reinforcing <br />materials. <br />15. Areas disturbed by a project and which are suitable for vegetation shall be seeded <br />or revegetated to prevent subsequent soil erosion.. <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 application and not certified <br />in accordance therewith are not included within the terms of this 401 certification. <br />18. To the extent reasonable and cost-effective, the activity submitted for certification <br />shall be designed to minimize subsequent maintenance. <br />19. Frequent fording of a channel is not permitted. ~ Temporary bridges or other <br />structures shall be built if frequent crossings are necessary. <br />20. The discharge of materials which cause filoating debris, surface scum or film, or <br />color or odor which impair classified uses is not permitted. <br />