(A) Findings of fact. It is hereby determined that land development projects increase storm water runoff rates and volumes, flooding, stream channel erosion, and sediment transport and deposition; and contributes to increased quantities of water-borne pollutants, and storm water runoff, soil erosion and non-point source pollution can be controlled and minimized through the regulation of storm water runoff from development sites.
(B) Purpose. This chapter is intended to set standards to regulate the quantity and quality of storm water runoff when land use changes from open or agricultural to a use that may result in increased imperviousness. These minimum requirements are established to protect and safeguard the general health, safety, and welfare of the public residing in watersheds within this jurisdiction. It shall be the policy of the county and the County Department of Storm Water Management that these minimum requirements shall be required for any new development, redevelopment and new construction located within the county area not exempt under this chapter. This chapter seeks to meet this purpose through the following objectives:
(1) Minimize increases in storm water runoff from any development in order to reduce flooding, siltation, increases in stream temperature, and stream bank erosion and maintain the integrity of stream channels;
(2) Minimize increases in non-point source pollution caused by storm water runoff from development which would otherwise degrade local water quality;
(3) Reduce storm water runoff rates and volumes, soil erosion and non-point source pollution, wherever possible, through storm water management controls, and to ensure that these management controls are properly maintained and pose no threat to public safety.
(C) Applicability. The performance standards herein must be met at all new development and redevelopment areas that disturb one or more acres of land or disturbances of less than one acre of land that are part of a larger common plan of development or sale if the larger common plan will ultimately disturb one or more acres of land within the county area. The following activities may be exempt from these storm water performance criteria:
(1) Developments that do not disturb more than one acre of land, provided they are not part of a larger common development plan; or
(3) Any logging and agricultural activity; or
(4) Additions or modifications to existing single family structures; or
(5) Repairs to any storm water treatment practice deemed necessary by the County Board; or
(6) Activities implemented under the jurisdiction of the County Surveyor.
(D) History and application. This chapter repeals and replaces Ordinance No. 2006-BCC-36, which was amended by Ordinance No. 2007-BCCO-46. Ordinance 2006-BCC-36, as amended, repealed and replaced Ordinance No. 2001-BCC-38 (Storm water Erosion and Control) and 2004-BCC-38 (Storm water Management in New Development and Redevelopment).
(Ord. 2010-BCC-13, passed 4-19-10)