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(d) Any soil or dirt storage piles containing more than 10 cubic yards of material should not be located with a downslope drainage length of less than 25 feet from • the toe of the pole to a roadway drainage channel. If remaining for more than seven days, they shall be stabilized by mulching, vegetative cover,tarps or other means. Erosion from piles which will be in existence for less than seven days shall be controlled by placing straw bales or silt fence barriers around the pile.. In- street utility repair or construction soil or dirt storage piles located closer than 25 feet of a roadway or drainage channel must be covered with tarps or suitable alternative control, if exposed for more than seven days, and the storm drain inlets must be protected with straw bale or other appropriate filtering barriers. Subd. 7. Storm water management criteria for permanent facilities. Storm water Management criteria for permanent facilities shall be in conformance with the City's Comprehensive Water Resource Management Plan dated June, 1997. Subd. 8. Design standards. Storm water detention facilities constructed in the City of St. Anthony shall be designed in conformance with the City's Comprehensive Water Resource Management Plan dated June, 1997. Subd. 9. Wetlands. Wetlands shall be maintained and protected in conformance with the City's Comprehensive Storm Water Management Plan dated June, 1997. Subd. 10. Steep slopes. No land disturbing or development activities shall be-allowed on slopes of 18% or more. • Subd. 11. Catch basins. When deemed necessary by the Public Works Director, all newly installed and rehabilitated catch basins shall-be provided with a sump area for the collection.of coarse-grained material. Such basins shall be cleaned when they are half filled with material. Subd. 12. Drain leaders. When deemed necessary by the Public Works Director, all newly constructed and reconstructed buildings will route drain leaders to pervious areas wherein the runoff can be allowed to infiltrate. The flow rate of water exiting the leaders shall be controlled so no erosion occurs in the previous areas. Subd. 13. Inspection and maintenance. All storm water management facilities shall be designed to minimize the need of maintenance,to provide access for maintenance purposes and to be structurally sound. All storm water management facilities be inspected and maintained in accordance with the City's Comprehensive Storm Water Management Plan dated June, 1997. It shall be the responsibility of the applicant to obtain any.necessary easements or other property interests t allow access to the storm water management facilities for inspection maintenance purposes. -8- •