The purpose of this chapter is to adopt as the City’s standards and sizing criteria and BMPs to address said standards the Guidelines, Sizing Criteria, and BMPs proposed by the Iowa Storm Water Management Manual and as specifically identified above (hereinafter collectively “City storm water requirements”) in order to protect and safeguard the general health, safety, and welfare of the public within this jurisdiction. This chapter seeks to meet that purpose through the following objectives:
1. Minimize increases in storm water runoff from development within the City limits and fringe area 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. Minimize the total annual volume of surface water runoff which flows from any specific development project site after completion to not exceed the pre-development hydrologic regime to the maximum extent practicable; and
4. Reduce storm water runoff rates and volumes, soil erosion, and non-point source pollution, wherever possible, through establishment of appropriate minimum storm water management standards and BMPs and to ensure that BMPs are properly maintained and pose no threat to public safety.