§ 6.06.04. Stormwater management facility performance objectives.

Stormwater management plans must demonstrate the proposed development or activity has been planned and designed and will be constructed and maintained to meet each of the following performance objectives:

1.

Ensure that after development, runoff from all planned site improvements approximates the rate of flow, volume and timing of runoff that would have occurred following the same rainfall under existing conditions. Offsite runoff presently draining across the project site shall be allowed to continue to enter the site and shall be included in the pre- and post-runoff calculations.

2.

Maintain the natural hydrodynamic characteristics of the watershed;

3.

Protect or restore the quality of ground and surface waters;

4.

Ensure that erosion during and after development is minimized;

5.

Protect groundwater levels;

6.

Protect the beneficial functioning of wetlands as areas for the natural storage of surface waters and the chemical reduction and assimilation of pollutants;

7.

Prevent increased flooding and damage that result from improper location, construction and design of structures in areas which are presently subject to an unacceptable danger of flooding;

8.

Prevent or reverse salt water intrusion;

9.

Protect the natural fluctuating levels of salinity in estuarine areas;

10.

Minimize injury to flora and fauna and adverse impacts to fish and wildlife habitat; and

11.

Otherwise further the objectives of this ordinance (Ordinance No. 00-03), and maintain the level of service standards and meet the requirements for concurrency.

(Ord. No. 11-01, § 2, 1-18-11)