§ 86-155. One-acre disturbances from construction activity.

All operators of construction sites, including sites involving clearing, grading, and excavation activities, that result in the disturbance of one or more acres of land shall comply with the following requirements, in addition to obtaining a Site Development Permit:

(a)

Cut and fill slopes shall be no greater than 2:1, except as approved by the HCED to meet other community or environmental objectives.

(b)

Clearing and grading of natural resources, such as forests and wetlands, shall not be permitted, except when in compliance with all other chapters of this Code. Clearing techniques that retain natural vegetation and drainage patterns shall adhere to the Best Management Practices as set forth in the iSWM Design Manual, published and available through NCTCOG.

(c)

Clearing, except that necessary to establish sediment control devices, shall not begin until all sediment control devices have been installed and have been stabilized.

(d)

Soil stabilization shall be completed within five (5) days of clearing or inactivity in construction.

(e)

If seeding or another vegetative erosion control method is used, it shall be established within two weeks from the date land-disturbing activities commence on the property. In the event this timeline is not met, the HCED may require the site to be reseeded or a non-vegetative erosion control method employed.

(f)

Special techniques that meet the design criteria outlined in the iSWM Design Manual on steep slopes or in drainage ways shall be used to ensure stabilization.

(g)

Soil stockpiles must be stabilized or covered at the end of each workday.

(h)

The entire site must be stabilized, using a heavy mulch layer or another stabilization method that does not require germination to control erosion, at the close of the construction season.

(i)

Techniques shall be employed to prevent the blowing of dust or sediment from the site.

(j)

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

(k)

Sediment control requirements shall include:

(1)

Settling basins, sediment traps, or tanks and perimeter controls;

(2)

Settling basins that are designed in a manner that allows adaptation to provide long term stormwater management, if required by the HCED; and

(3)

Protection for adjacent properties by the use of a vegetated buffer strip in combination with perimeter controls.

(l)

Waterway and watercourse protection requirements shall include:

(1)

A temporary stream crossing installed and approved by the HCED if a wet watercourse will be crossed regularly during construction;

(2)

Stabilization of the watercourse channel before, during, and after any in channel work;

(3)

On-site stormwater conveyance channels designed according to the criteria outlined in the iSWM Design Manual; and

(4)

Adequate stabilization to prevent erosion located at the outlets of all pipes and paved channels.

(m)

Construction site access requirements shall include a temporary access road provided at all sites and any other measures required by the HCED in order to ensure that sediment is not tracked onto public streets by construction vehicles or washed into storm drains.

(Ord. No. O-2009-026-11, § 1, 11-16-09)