(A) Grading, erosion control practices, sediment control practices, and waterway crossings shall meet the design criteria set forth by the city, and shall be adequate to prevent transportation of sediment from the site to the satisfaction of the city.
(B) Clearing and grading.
(1) Clearing and grading of natural resources, such as forests and wetlands, shall not be permitted, except when in compliance with all statutes and ordinances.
(2) Clearing techniques that retain natural vegetation and retain natural drainage patterns, shall be used to the satisfaction of the city.
(3) Clearing, except that necessary to establish sediment control devices, shall not begin until all sediment control devices have been installed and have been stabilized.
(4) Cut and fill slopes shall be no greater than 2:1, except as approved by the city or its designated agent to meet other community or environmental objectives.
(C) Erosion Control.
(1) Soil must be stabilized using appropriate temporary measures if construction activity is halted for a period of fourteen (14) days.
(2) If vegetative erosion control methods, such as seeding, have not become established within two (2) weeks, the city or its designated agent may require that the site be reseeded, or that a non-vegetative option be employed.
(3) On steep slopes or in drainage ways, special techniques that meet the design criteria established by the city shall be used to ensure stabilization.
(4) Soil stockpiles must be stabilized or covered at the end of any period of inactivity exceeding fourteen (14) days.
(5) Techniques shall be employed to prevent the blowing of dust or sediment from the site.
(6) Techniques that divert upland runoff past disturbed slopes shall be employed.
(D) Sediment controls.
(1) Sediment controls shall be provided in the form of settling basins or sediment traps or tanks, and perimeter controls.
(2) Where possible, settling basins shall be designed in a manner that allows adaptation to provide long term stormwater management.
(3) Adjacent properties when possible may be protected by the use of a vegetated buffer strip, in combination with perimeter controls.
(E) Waterways and watercourses.
(1) When a wet watercourse must be crossed regularly during construction, a temporary stream crossing shall be provided, and an approval obtained from the city and any required state agency.
(2) When in-channel work is conducted, the channel shall be stabilized before, during and after work.
(3) All on-site stormwater conveyance channels shall be designed according to the criteria established by the city.
(4) Stabilization adequate to prevent erosion must be provided at the outlets of all pipes and paved channels.
(F) Construction site access.
(1) A temporary access road shall be provided at all sites.
(2) Other measures may be required at the discretion of the city or its designated agent in order to ensure that sediment is not tracked onto public streets by construction vehicles, or washed into storm drains.
(Ord. 2004-17, passed 11-15-04)