Prior to using the flow chart, gather the following preliminary information.

  • Conduct site review
  • Define performance goal

Conduct site review

  • Aerial photos and topographic maps
  • County soil surveys and other soil information as available
  • County Geologic Atlas
  • Local groundwater levels
  • DWSMA and Wellhead Protection maps
  • FEMA and local floodplain maps
  • Soil borings and site survey
  • MPCA listing of potentially contaminated sites
  • Phase 1 and 2 Environmental Site Assessments
  • TMDLs and local water quality standards
  • Wetland delineations, MNRAM assessments, and wetland classifications
  • Proposed conditions, conceptural/preliminary site design
  • Local zoning and land use requirements/ordinances, including stormwater rate control requirements
  • Communication with local landowners, LGU, or others knowledgeable about the site
  • Site inspection

Define treatment goal

  • New and redevelopment projects: Retain on site a volume of 1.1 inches from impervious surfaces
  • Linear projects: Retain on site the larger of 1.1 inches from all new impervious surfaces or 0.55 inches from all new and fully reconstructed impervious surfaces

This page was last edited on 26 November 2013, at 22:02.


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