A map is needed, in addition to your current SWPPP, showing the post-construction or long-term stormwater management of the site. Here is a list of things your map should include:
This information is for a general permit where applicable – but not necessarily for single-lot home construction. It does include developments and commercial projects.
Here is a sample of a post-construction/long-term stormwater map.
Map from https://www3.epa.gov/npdes/pubs/exampleswppp_smallcommercial_app.pdf
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