§ 9.6.1. Purpose

The purpose of this Division is to protect, maintain and enhance the public health, safety, environment and general welfare by establishing minimum requirements and procedures to control the adverse effects of increased post-development stormwater runoff and non-point source pollution associated with new development and redevelopment by focusing on the types of frequently occurring storm events that generate the most water quality impacts. Proper management of post-development stormwater runoff will minimize damage to public and private property and infrastructure, safeguard the public health, safety, environment and general welfare of the public, and protect water and aquatic resources. This Division seeks to meet that purpose through the following objectives:

A.

Establish decision-making processes surrounding land development activities that protect the integrity of the watershed and preserve the health of water resources;

B.

Require that new development and redevelopment maintain the pre-development hydrologic response in their post-development state as nearly as practicable in order to reduce flooding, stream bank erosion, non-point source pollution and increases in stream temperature, and maintain the integrity of stream channels and aquatic habitats;

C.

Establish minimum post-development stormwater management standards and design criteria for the regulation and control of stormwater runoff quantity and quality and to preserve and/or restore natural hydrologic conditions on development sites;

D.

Establish design and application criteria for the construction and use of structural stormwater control facilities that meet the minimum post-development stormwater management standards;

E.

Encourage the use of nonstructural stormwater management and stormwater better site design practices, peak rate and/or runoff reduction, and the preservation of greenspace and other conservation areas, by establishing minimum post-development stormwater management standards and design criteria for the regulation and control of stormwater runoff quantity and quality. Coordinate site design plans, which include greenspace, with the City's greenspace protection plan;

F.

Establish provisions for the long-term responsibility of operation, inspection, maintenance and repair of private structural stormwater control facilities and private commitments for nonstructural stormwater management practices to ensure that they continue to function as designed, are maintained, and pose no threat to public safety or the environment;

G.

Establish administrative procedures for the submission, review, approval and disapproval of stormwater management plans, and for the inspection of approved active projects, and long-term compliance; and

H.

Protect public health and safety by reducing the risk of localized flooding and reducing the amount of runoff entering streets.

( Ord. of 4-17-2018(7) , §§ 9-61, 9-61.1)