06/09/2010 P&Z Packet - Laserfiche WebLink

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• • • Attachment 1: Site Layout Performance Standards - REVISED May 26, 2010 Page 1 E. Site Layout Performance Standards. All uses shall comply with the requirements of this section. 1. Purpose. The City developed a Resource Management System Plan based on a water and natural resource inventory and assessment and the vision, goals and policies developed through the comprehensive planning process. The performance standards established in this section are for the purposes of accommodating development that protects, conserves and enhances the city's water and natural resources consistent with Comprehensive Plan goals. 2. Natural Resource Conservation. The two overall components of natural resource conservation are the surface water management system and environmentally sensitive areas. a. Surface Water Management System. The design of the surface water management system shall be based on preserving predevelopment hydrology (i.e., existing surface water runoff volumes and rates) and environmentally sensitive areas to the extent practical in accordance with the following minimum performance standards: 1) Establish the wetland preservation corridor in accordance with watershed district rules. 2) Reduce the need for surface water management facilities by preserving and integrating natural topography, soils and site drainage into the surface water management system to the degree they can accommodate the additional flow and volume of water without compromising water quality. 3) The preferred conveyance strategy is to transport wherever possible untreated and treated runoff in conveyance facilities open to the atmosphere (e.g., swales, vegetated buffer strips, energy- dissipating structures, etc.) rather than through enclosed pipes, so as to decrease runoff velocity, allow for natural infiltration, allow suspended sediment particles to settle, and to remove pollutants. 4) Site grading shall be minimized to the maximum extent reasonable to minimize impacts to environmentally sensitive areas. 5) The surface water management system shall be designed to meet the performance standards in the Lino Lakes Stormwater Management Ordinance, Lino Lakes Stormwater Design Manual & RCWD Rules. b. Environmentally Sensitive Areas (ESAs). The design of the site shall be based on protecting, conserving, and enhancing ESAs to the extent practical while allowing for equitable economic return. ESAs shall be identified and categorized through the site planning process. 1) ESA Identification and Categorization. During the resource inventory and site analysis process for a property that has an ESA, all ESA features on the site shall be identified on the resource inventory map. Landscape -scale ESAs are mapped and on file with the City. Balancing the goals of natural resource protection and conservation with land use goals requires prioritizing ESAs. ESA categories (i.e., Natural Resource Protected Area) are listed in descending order from the highest to the lowest level of priority. ESA features (i.e., wetland preservation corridor, natural areas, etc.) listed under each category are not prioritized.