Agenda Packets - 2018/07/02 - Laserfiche WebLink

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1. POLICY. It is the policy of the Board of Managers to manage stormwater and snowmelt runoff on a local, regional and watershed basis; to promote natural infiltration of runoff throughout the District to preserve flood storage and enhance water quality; and to address the unique nature of flooding issues within the Flood Management Zone, through the following principles: (a) Maximize water quality and flood control on individual project sites through Better Site Design practices and stormwater management. (b) Minimize land use impacts and improve operational and maintenance efficiency by siting stormwater BMPs, when needed, regionally unless local resources would be adversely affected. (c) Treat stormwater runoff before discharge to surface waterbodies and wetlands, while considering the historic use of District water features. (d) Ensure that future peak rates of runoff are less than or equal to existing rates. (e) Reduce the existing conditions peak rate of discharge along Lower Rice Creek and the rate of discharge and volume of runoff reaching Long Lake, to preserve the remaining floodplain storage volume within Long Lake and mitigate the historic loss of floodplain storage. (f) Preserve remaining floodplain storage volume within the Rice Creek Watershed to minimize flood potential throughout the District. 2. REGULATION. A permit incorporating an approved stormwater management plan is required under this rule for development, consistent with the following: (a) A permit is required for subdivision of an area exceeding one acre. This includes subdivision for single-family residential, multi -unit residential, commercial, industrial, or institutional development. (b) A permit is not required for single-family residential construction on an individual lot of record. If the lot is within a development previously approved by the District, the construction must conform to the previous approval. (c) A permit is required for development, other than Public Linear Projects, that creates or reconstructs 10,000 square feet or more of impervious surface. This threshold is cumulative of all impervious surface created or reconstructed through multiple phases or connected actions of a single complete project, as defined by the District, on a single parcel or contiguous parcels of land under common ownership, development or use. (d) For Public Linear Projects, a permit is required to create 10,000 square feet or more of impervious surface through multiple phases or connected actions of a single complete project, as defined by the District, within a Resource of Concern Drainage Area. (e) Rule C requirements do not apply to sidewalks and trails 10 feet wide or less that are bordered down -gradient by vegetated open space or vegetated filter strip with a minimum width of 5 feet. (f) Rule C requirements do not apply to Bridge Spans and Mill, Reclamation & Overlay projects. (g) Rule C.6 requirements do not apply to single family residential subdivisions creating 14