Construction stormwater
Disturbing an acre or more? Answer four questions and get a site-specific SWPPP draft with BMPs, an inspection form and NOI notes. Free to read.
ePlan fills in
How it works
What you get
The first draft is free to read. Each document after it is drafted from the same confirmed facts.
Modeled on: EPA SWPPP template for the 2022 CGP, or the state's template
From public data
Construction that disturbs one acre or more, or less as part of a larger common plan, needs stormwater permit coverage.
Source: 40 CFR 122.26(b)(15)
Questions
Construction operators who disturb one acre or more, or less as part of a larger common plan of development or sale, need stormwater permit coverage, and those permits require a SWPPP. Under EPA's permit, the SWPPP must be prepared before you file the notice of intent.
EPA's 2022 Construction General Permit covers Massachusetts, New Hampshire, New Mexico, Washington DC, Puerto Rico, most other territories, most Indian Country and some federal facilities. Everywhere else, the state issues its own construction general permit with its own SWPPP rules.
Under EPA's 2022 permit, at least every 7 calendar days, or every 14 days plus within 24 hours of a storm of 0.25 inches or more. State permits set their own schedules.
Only if you are qualified. California's Construction General Permit requires the SWPPP to be developed by a Qualified SWPPP Developer (QSD). ePlan's draft gives a QSD a filled-in starting point to review, complete and certify.
EPA's 2022 permit expires at 11:59 pm on February 16, 2027. EPA proposed the 2027 permit in August 2026, and sites covered by the 2022 permit will need new coverage under the 2027 permit.
Related doors
Where are you grading?
Where are your California work sites?
Where is the house being permitted?
Where is the project site?
Where is the excavation?
Where is the drainage area?
Answer it and the project exists. Three more questions, then the draft.