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Stormwater Pollution Prevention Program

Storm Water Pollution Prevention Plan (SWPPP)

A Storm Water Pollution Prevention Plan or SWPPP is required under the industrial and construction storm water general permits. The purpose of a SWPPP is to identify possible pollutant sources to storm water and to identify Best Management Practices (BMPs) that, when implemented, will reduce or eliminate any possible water quality impacts. BMPs are physical, structural, and/or managerial practices that, when used singly or in combination, prevent or reduce pollution of storm water.

A SWPPP shall be developed for each facility covered by the storm water program and shall be complete prior to construction.

SDDOT has developed SWPPP guidelines to assist with the development and implementation of project specific SWPPPs. The format adopted by SDDOT is contained in the following document.

  • SDDOT SWPPP Template
  • A SWPPP includes the following:

    • Narrative, plan sheets, and construction details for erosion and sediment control.
    • Description of the construction activity.
    • Description of the potential for discharge of sediment and other pollutants from the site.
    • Identification of the person responsible for implementing the SWPPP.
    • Narrative describing the timing of installation of erosion and sediment control measures.
    • Site map showing the location and type of temporary and permanent erosion control Best Management Practices (BMP's).
    • Standard plates and/or specifications for the BMP's used for the project.
    • Site map with existing and proposed grades with direction of storm water flow information before and after the project.
    • Site map showing impervious surfaces and soil types.
    • Site map showing the location of areas not to be disturbed.
    • Site map showing the location of construction phasing.
    • Site map showing all surface waters (streams, lakes, wetlands) within 0.5 miles from the project boundaries that will receive storm water runoff from the site during or after construction. This can also be shown with an arrow and distance note if it does not fit on the plans.
    • Methods used for final stabilization of all exposed soil areas.
    • Information related to conformance with wetland permits (if applicable), the need for environmental review or results of such review, impacts of discharges on endangered or threatened species, and impacts of discharges on historic places or archeological sites.
    • If working in area with a water body that has a Total Maximum Daily Load (TMDL), measures must taken to ensure that discharges are in conformance with the TMDL. TMDL information is located on the DENR TMDL website (http://www.denr.sd.gov/dfta/wp/tmdl.aspx).

    Storm Water, Erosion, and Sediment Control Inspection Report DOT-298 (04/07) is used for inspections on structural sediment and erosion controls at SDDOT project sites. Additionally, this form documents project compliance with the SWPPP and SD General Permit for Construction Activities. More information available at: http://denr.sd.gov/des/sw/stormwater.aspx

    According to the general permit, inspections must be conducted by qualified personnel every 7 days and within 24 hours of a 1/2 inch rainfall. It is possible for the inspection to fall on weekends and/or holidays. During winter conditions, inspections should be conducted monthly.

    Four specific areas are identified for inspection:

    1. All areas which have been disturbed and have not reached final stabilization of 70% vegetative cover.
    2. All erosion and sediment control structural BMPs.
    3. Areas used to store materials (including fuels, chemicals, paints, etc.)
    4. Locations where vehicles and equipment enter and exit the site.

    It is important to note that the general permit requires the inspector to not just identify evidence of pollutants leaving the site but potential as well.

    The general permit also identifies when records should be taken on a job site. Dates should be documented whenever any major grading occurs, as well as when stabilization measures are initiated. This information will be important in the event of non-compliance issues which may occur. Good record keeping can eliminate future problems and indicate SDDOT's efforts at maintaining a compliant construction site.

    Construction Industry Compliance Center Website

    This site also contains information on the storm water and SWPPP requirements. It contains explanations of environmental rules pertaining to the construction industry using plain language. Also provided are links to detailed information, including state regulations and other resources. This web site is being developed by the National Center for Manufacturing Sciences, in conjunction with:

    • Associated General Contractors of America
    • National Association of Home Builders
    • American Road and Transportation Builders Association
    • Associated Builders and Contractors Inc.
    • Golf Course Builders Association of America.
    • U.S. Environmental Protection Agency
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