Example Checklist for Preliminary/Concept
Stormwater Management Plan Preparation and Review

• Applicant information
• Name, legal address, and telephone number
• Common address and legal description of site
• Vicinity map
• Existing and proposed mapping and plans (recommended scale of 1" = 50'.) which illustrate at a minimum:
  • Existing and proposed topography (minimum of 2-foot contours recommended)
  • Perennial and intermittent streams
  • Mapping of predominant soils from USDA soil surveys
  • Boundaries of existing predominant vegetation and proposed limits of clearing
  • Location and boundaries of resource protection areas such as wetlands, lakes, ponds, and other setbacks (e.g., stream buffers, drinking water well setbacks, septic setbacks)
  • Location of existing and proposed roads, buildings, and other structures
  • Existing and proposed utilities (e.g., water, sewer, gas, electric) and easements
  • Location of existing and proposed conveyance systems such as grass channels, swales, and storm drains
  • Flow paths
  • Location of floodplain/floodway limits and relationship of site to upstream and downstream properties and drainages
  • Preliminary location and dimensions of proposed channel modifications, such as bridge or culvert crossings
  • Preliminary location, size, and limits of disturbance of proposed stormwater treatment practices
    
• Hydrologic and hydraulic analysis including:
  • Existing condition analysis for runoff rates, volumes, and velocities presented showing methodologies used and supporting calculations
  • Proposed condition analysis for runoff rates, volumes, and velocities showing the methodologies used and supporting calculations
  • Preliminary analysis of potential downstream impact/effects of project, where necessary
  • Preliminary selection and rationale for structural stormwater management practices
  • Preliminary sizing calculations for stormwater treatment practices including contributing drainage area, storage, and outlet configuration
• Preliminary landscaping plans for stormwater treatment practices and any site reforestation or revegetation
• Preliminary erosion and sediment control plan that at a minimum meets the requirements outlined in local Erosion and Sediment Control guidelines
• Identification of preliminary waiver requests