§ 11-85. Minimum erosion control measures.

(a)

Structural controls.

(1)

Structural controls shall be installed and maintained to reduce sediment from stormwater runoff. Structural controls shall include, but not be limited to, silt fences, earthen dikes, drainage swales, check dams, subsurface drains, pipe slope drains, storm drain inlet protection, rock outlet protection, sediment traps, reinforced soil retaining systems, gabions, and temporary or permanent sediment basins.

(2)

Structural controls must be installed after the clearing necessary for the installation of the controls, but before the clearing for the remaining portions of the site.

(3)

Techniques that divert upland runoff past disturbed slopes shall be employed.

(b)

Stabilization.

(1)

Soil stabilization shall be completed within two (2) weeks of clearing or inactivity in construction. Stabilization methods such as mulching, temporary seeding, permanent seeding, geotextiles, sod stabilization, vegetative buffer strips, protection of trees, and preservation of natural vegetation shall be used. The potential for soil loss shall be minimized by retaining natural vegetation wherever practicable. If seeding or other vegetative erosion control method is used, the vegetation shall become established within three (3) weeks of application or the city may require that the site be reseeded and/or mulched to stabilize the site.

(2)

Material deposits must be graded at two-week, minimum, intervals.

(3)

The entire disturbed area must be stabilized when site grading is complete. The city may require stabilization of any part of the site that will remain inactive for longer than two (2) weeks or when an erosion problem is identified.

(c)

Waterway and watercourse protection requirements.

(1)

A temporary stream crossing will be required if a wet watercourse will be crossed regularly during construction.

(2)

The watercourse channel must be stabilized after any in-channel work.

(3)

Stabilization adequate to prevent erosion shall be located at the outlets of all pipes and paved channels.

(d)

Construction site access requirements. A temporary access road shall be provided at all sites. Other measures may be required by the city to ensure that sediment is not washed into storm drains and construction vehicles do not track sediment onto public streets.

(e)

Dust abatement. Dust abatement measures shall be provided as often as necessary to prevent the operations from producing dust in amounts damaging to property, cultivated vegetation, domestic animals, or causing a nuisance to persons living or occupying buildings in the vicinity of the work area.

(f)

Other controls.

(1)

Measures shall be utilized to prevent the discharge of solid materials, including building materials, to waters of the state. Measures shall ensure and demonstrate compliance with state and city waste disposal, temporary and permanent sanitary sewer or septic system regulations.

(2)

If concrete washout will occur on-site, measures shall be provided which prevent the discharge of concrete washout waters to waters of the state.

(3)

Measures shall be provided to prevent discharges from fuel storage areas, hazardous waste storage and truck wash areas to waters of the state.

(Ord. No. 27-06, § 1, 3-21-06; Ord. No. 54-11, § 5, 7-5-11)