SWPPP plans need to control erosion, be site specific, and be designed to effectively manage runoff and retain sediment on-site during construction. Plans should be developed in conjunction with early planning and design of any construction project as an integral part of new development. By incorporating SWPPPs into early planning and design, BMPs will be more effective at controlling erosion and sediment and protecting water quality. They will also be more cost effective to implement. Finally, a well-designed SWPPP will integrate BMPs that can become part of an effective post construction stormwater management system for the site.

 

A plan is required to address six phases that include the following:

 

Phase 1  Site Evaluation and Design Development

• Collect site information
• Develop site plan
• Prepare pollution prevention site map

 

Phase 2  Assessment

• Measure the site area
• Determine the drainage areas
• Calculate the runoff coefficient

 

Phase 3  Control Selection/Plan Design

• Select erosion and sediment controls
• Select other controls
• Select stormwater management controls
• Indicate the location of controls on site map
• Prepare an inspection and maintenance plan
• Coordinate controls with construction activity
• Prepare sequence of major activities
• Incorporate state or local requirements

 

Phase 4  Certification/Notification

• Certify the plan
• Submit Notice of Intent
• Plan location and public access

 

Phase 5  Construction/Implementation

• Implement controls
• Inspect and maintain controls
• Update/change the plan
• Report releases of reportable quantities

 

Phase 6  Final Stabilization/Termination

• Final stabilization
• Notice of termination