A Stormwater Pollution Prevention Plan (SWPPP) is a site-specific, written document that:
Describes practices to reduce pollutants and the volume of stormwater discharges from the construction site
Describes the site and each major phase of the planned activity
Documents changes and modifications to the construction plans and associated stormwater pollution prevention activities
Identifies potential sources of stormwater pollution at the construction site
Identifies procedures the operator will implement to comply with the terms and conditions of a construction general permit
Outlines the roles and responsibilities of contractors and subcontractors
Common SWPPP Objectives
The SWPPP outlines the steps you will take to comply with the terms and conditions of your construction general permit. Keeping the following objectives in mind as you develop your SWPPP will help guide you in addressing your permit requirements and in protecting water quality.
Control the perimeter of your site.
Follow pollution prevention measures.
Minimize the area and duration of exposed soils.
Protect receiving waters adjacent to your site.
Protect slopes and channels.
Reduce impervious surfaces and promote infiltration.
Stabilize the site as soon as possible.
Like your construction site, your SWPPP is dynamic. It is a document that must be amended to reflect changes occurring at the site. As plans and specifications change, those changes should be reflected in your SWPPP. If you find that a BMP is not working and you decide to replace it with another BMP, you must reflect that change in your SWPPP. Document in your SWPPP transitions from one phase of construction to the next, and make sure you implement new BMPs required for the next phase.