Storm Water Pollution Prevention Plans (SWPPPs) and Stormwater Management Plans (SWMPs)
Storm Water Pollution Prevention Plans (SWPPPs) – pronounced “Swipps” – and Stormwater Management Plans (SWMPs) - pronounced "Swamps" - are site-specific, written documents that: (1) identify potential sources of stormwater pollution on a construction, industrial and/or municipal site; (2) describe stormwater control measures and Best Management Practices (BMPs) that will be used to reduce or eliminate pollutants in stormwater discharges from the project site; and (3) identify the procedures the operator of the project site will implement to comply with the terms and conditions of the site-specific general permit.
SWPPPs and SWMPs are ever-changing documents. In order for a construction, industrial or municipal project site to remain in compliance with the Clean Water Act's NPDES permitting program, a Storm Water Pollution Prevention Plan or Stormwater Management Plan, which details the sites' stormwater management initiatives, must be developed and maintained throughout the construction project's entirety. As the project progresses and goes through changes, the SWPPP or SWMP is required to be revised to reflect those changes. The Storm Water Pollution Prevention Plan and Stormwater Management Plan is comprised of site maps, BMP details, inspection reports, spill reports, corrective action logs and associated waivers.