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The exact agency, form, fee, deadline, and electronic portal depend on the site’s jurisdiction. Confirm those details before relying on the federal process below.
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1. Confirm that the project needs construction-stormwater coverage
Permit coverage is usually triggered by the amount of soil disturbance and the potential for stormwater discharge, not by the project’s building type. Under EPA’s CGP guidance, coverage generally applies to construction activity that disturbs one or more acres. A smaller phase or parcel can still be regulated when it is part of a common plan of development or sale that will disturb one acre or more overall.
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Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →| Question | What to establish |
|---|---|
| How much land will the overall plan disturb? | Measure clearing, grading, excavation, stockpiles, access roads, utility work and other activity across the common plan—not just the first parcel or phase. |
| Will the activity discharge stormwater? | Determine whether runoff from disturbed areas will reach a conveyance, stream, wetland, storm drain or other waters. |
| Has the authority designated the site? | EPA or an authorized permitting authority can require coverage for additional activities even when the ordinary acreage test is not the only trigger. |
“Disturbance” should be calculated from the complete construction plan. Include areas that will be cleared, graded, excavated or used for temporary access, material storage, staging, borrow, utility installation and similar work. A project that opens with a half-acre building pad may still exceed the threshold when its road, parking, drainage and later phases are included.
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Keep a written disturbance calculation and a site plan showing the common-plan boundary. Identify which portions are planned now and which are future phases. Those records help explain why coverage is or is not required if the agency asks questions later, and they make it easier to update the permit if the plan expands.
2. Identify the permitting authority before preparing an application
EPA’s 2022 CGP applies only in areas where EPA remains the NPDES permitting authority. Many states administer their own construction-stormwater programs, and tribal or territorial authorities may have separate requirements. The same project type can therefore use a different permit, application portal, SWPPP format or deadline depending on its location.
Check EPA’s current CGP coverage-area information, then open the permit and application instructions for the exact state, territory, tribal area or federal jurisdiction. EPA administers NPDES permitting in Lands of Exclusive Federal Jurisdiction; regulated construction discharges there require an EPA-issued permit such as the modified 2022 CGP.
Location must be checked at the discharge point, not just at the project’s mailing address. A linear project, utility corridor, road widening or development near a boundary may send runoff into areas regulated by more than one authority. If the site crosses a boundary, do not assume one filing covers every discharge. EPA’s Construction General Permit Frequent Questions explains that coverage may be needed from each authority with jurisdiction over discharges in the project area.
| Situation | What to compare |
|---|---|
| EPA CGP area | EPA’s permit, NeT filing process, federal eligibility conditions and 14-calendar-day timing rule. |
| Authorized state, tribal or territorial program | The local permit, portal or form, local SWPPP contents, fees, certification rules and deadline. |
| Federal-jurisdiction land | EPA-issued coverage and any special federal conditions that apply to the discharge. |
| Project spanning jurisdictions | Whether separate applications, plans or authorizations are required for each regulated discharge area. |
3. Determine who the “operator” is
Permit responsibility follows control, not simply ownership of the land. Under EPA’s CGP, an operator is generally a party with control over construction plans and specifications, or day-to-day control needed to ensure compliance with the permit. A developer, general contractor, utility owner or other party may meet the definition.
Map those responsibilities in writing before filing:
- Identify who approves the overall construction design and schedule.
- Identify who directs daily work, sequencing, grading and erosion-control implementation.
- List every party that may independently meet the operator definition.
- Have each potential operator confirm its obligations with the permitting authority.
For example, an owner may control the design and phasing while a general contractor controls daily grading and subcontractors. Both may have permit duties. A utility owner that controls a separate portion of a linear project may also be an operator for that portion. The labels in a contract do not automatically decide the regulatory question; the actual control exercised by each party matters.
Where several parties are operators, more than one NOI or operator certification may be required under the applicable permit. Coordinate signatures, SWPPP responsibilities, inspection assignments and change notifications so that no controlled portion of the site is left out. The construction contract does not, by itself, eliminate a party’s regulatory responsibility.
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4. Check eligibility and pre-filing conditions
Read the permit that governs the location from start to finish before submitting an NOI. Under EPA’s CGP, the eligibility review includes the following:
- Confirm that the project is in an EPA CGP coverage area and that the proposed discharge is eligible.
- Check for another NPDES permit that already covers the same discharge; overlapping or conflicting coverage must be resolved with the authority.
- Complete the permit’s endangered-species (ESA) procedures.
- Complete the required historic-property review.
- Review applicable state, tribal and territorial conditions, including any additional discharge restrictions.
- Determine whether the project’s receiving waters or location create special conditions under the permit.
The ESA and historic-property steps are eligibility conditions, not optional attachments to complete after earthwork begins. Gather the maps, site descriptions, consultation results, determinations and other documentation the governing permit calls for. If a condition cannot be satisfied, ask the authority how the project should proceed rather than certifying eligibility prematurely.
Also check whether another permit already governs the same stormwater discharge. Two permits that appear to cover the same outfall can create conflicting requirements. Resolve the overlap with the permitting authority and retain its direction with the project records.
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5. Prepare the Stormwater Pollution Prevention Plan (SWPPP)
EPA describes a SWPPP this way: “A SWPPP outlines how you plan to implement erosion and sediment controls and meet other requirements of the permit on your construction site.” Prepare it before filing the NOI, using the content requirements of the actual permit.
What the plan should accomplish
- Describe the site, construction phases, disturbance limits and anticipated discharge points.
- Show the erosion and sediment controls that will be installed, maintained and inspected.
- Explain how runoff, waste, fuel, concrete washout and other pollutants will be managed.
- Assign responsible personnel and describe inspection, corrective-action and recordkeeping procedures.
- Address the permit’s ESA, historic-property and water-quality conditions.
A useful plan connects the written controls to drawings and the real schedule. Show perimeter controls, stabilized entrances, sediment basins or other measures required by the permit, along with the sequence for installing and removing them. Identify where clean water will be diverted from disturbed soil and where runoff will be sampled or discharged if the permit requires it.
Include procedures for rain events, failed controls, material spills, concrete washout, waste containers, fuel storage and dust or tracking problems when those matters are addressed by the governing permit. Name the person who can direct corrective work and explain how inspection findings will be documented and closed.
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Update the SWPPP whenever the design, phasing, drainage pattern, controls or operators change. A plan that accurately described a cleared site may be inadequate after a new road, stockpile, outfall or subcontractor is added. Keep the current plan and required records available at the site or in the manner specified by the permit.
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6. Submit the Notice of Intent
For EPA CGP coverage, submit the NOI through EPA’s NPDES eReporting Tool (NeT). State, tribal and territorial programs may use a different system or form. The filing normally identifies the site and operators, describes construction activity and discharges, and certifies that the project meets the permit’s eligibility requirements.
EPA filing sequence
- Create the project record. Enter the legal site name, address, latitude and longitude, common-plan information and construction dates.
- List operators. Include every party required by the permit and verify that names and contact details match the certification documents.
- Describe the work. Report the disturbance acreage, phases, discharge points and receiving waters requested by the form.
- Record eligibility decisions. Enter the results of ESA and historic-property procedures and any applicable state or tribal conditions.
- Certify and submit. The authorized representative must make the permit certification and retain the submission confirmation.
Review acreage, coordinates, operator names, outfalls and construction dates against the SWPPP before certifying. An incomplete NOI can prevent the authorization clock from starting. Save the submitted form, certification, payment or confirmation record, and all correspondence.
If the authority asks for corrections or additional information, respond through the required channel and track when the filing becomes complete. Do not interpret a saved draft, payment receipt or automated account confirmation as authorization unless the governing authority says it is.
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7. Observe the 14-day federal timing rule
| Event | EPA 2022 CGP rule for a new site |
|---|---|
| NOI deadline | Submit at least 14 calendar days before construction begins. |
| Typical authorization point | Coverage generally begins 14 calendar days after EPA receives a complete NOI. |
| Exceptions | EPA may delay or deny authorization; an incomplete filing can delay the process. |
Count calendar days, not only business days, and use the planned start of regulated construction activity as the reference point. File earlier when possible so there is time to correct a rejected or incomplete submission, answer agency questions, coordinate multiple operators and revise the SWPPP.
These are EPA CGP timing rules, not a universal U.S. deadline. An authorized state or other NPDES authority may require earlier filing, different electronic steps or additional approvals. Build time for agency questions and corrections; do not schedule earth disturbance on the assumption that a same-day submission is authorization.
8. Assess whether a small-site waiver is available
A site disturbing five acres or less is not automatically exempt. EPA identifies limited waiver paths, each with conditions that must be verified with the applicable authority:
Low Erosivity Waiver
A construction-period R-factor below five may support a low-erosivity waiver. The threshold concerns the project’s erosivity conditions during construction, not simply the site’s annual rainfall or its acreage. Confirm the calculation method, dates and certification requirements in the governing permit.
Water-quality analysis pathways
Other limited options may be available when a qualifying determination is based on an EPA-established or approved total maximum daily load (TMDL), or when an equivalent analysis supports discharge to non-impaired waters. These are conditional determinations, not blanket small-project exemptions.
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Compare the waiver route with ordinary permit coverage using the site’s exact acreage, construction dates, erosivity, receiving-water status and applicable authority. Keep the analysis and supporting records. If the site’s schedule, disturbance area, receiving water or controls change, reassess whether the waiver remains valid. If any condition is uncertain, obtain confirmation from the permitting authority before disturbing soil.
9. Plan for construction changes and ongoing compliance
Permit coverage is not finished when the NOI is accepted. During construction, operate the controls and inspections described in the SWPPP, correct deficiencies, and maintain required records. Revisit the permit whenever the project expands, changes phases, adds an operator, alters discharge points or changes receiving waters.
Coordinate field supervisors, inspectors, designers and subcontractors so that a change in the drawings reaches the person responsible for the SWPPP. Record when controls are installed, repaired or replaced and retain inspection and corrective-action documentation for the period required by the permit.
If the common plan grows beyond the original disturbance estimate, a previously sub-acre phase can become part of a regulated one-acre-or-more project. Contact the authority before making the change rather than relying on the original acreage calculation. A new outfall or receiving water can also require a permit update or additional authorization.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.10. Avoid the most common application failures
- Applying to the wrong agency: Verify the jurisdiction before opening an application.
- Counting only one parcel: Calculate the entire common plan of development or sale.
- Leaving out an operator: Compare contract roles with the permit’s control-based definition.
- Filing before the SWPPP is ready: Eligibility and control details must support the NOI certification.
- Skipping ESA or historic-property procedures: These are pre-filing eligibility conditions under the federal CGP.
- Starting work during the waiting period: Submit at least 14 calendar days before the planned start and wait for authorization.
- Assuming a waiver is automatic: Document the exact low-erosivity or water-quality pathway.
- Ignoring permit changes: Check the live agency page immediately before filing.
- Using inconsistent information: Make the acreage, coordinates, dates, outfalls and operator names agree across the NOI, SWPPP, drawings and certifications.
- Forgetting a boundary: Confirm whether a linear or multi-jurisdiction project needs separate coverage.
11. Current federal permit status and expiration planning
As of October 2026, EPA’s current resource page lists the modified 2022 CGP and its appendices. EPA published a proposed 2027 CGP on August 3, 2026, and states that the 2022 CGP expires on February 16, 2027. The successor is proposed, so its final terms and effective date may differ.
Projects beginning near or after February 16, 2027 should confirm the live EPA permit page and the applicable jurisdiction’s transition instructions immediately before filing. Do not assume that an NOI prepared under the 2022 permit will satisfy a replacement permit without confirmation. Projects already covered should also check whether the new permit changes eligibility, SWPPP content, electronic reporting or continuation requirements.
12. A practical pre-submission checklist
- Record the complete project boundary and total common-plan disturbance.
- Confirm whether stormwater will discharge and whether the authority has designated the activity.
- Identify every federal, state, tribal or territorial authority with jurisdiction.
- Identify all operators and agree on certification and SWPPP duties.
- Read the current permit, appendices and local instructions.
- Complete ESA, historic-property and other eligibility reviews.
- Finish the SWPPP and align it with the construction drawings and schedule.
- Prepare the NOI and supporting certifications.
- Submit through NeT or the authority’s required portal at least 14 calendar days before construction when the EPA CGP applies.
- Save confirmation and do not begin regulated disturbance until coverage is authorized.
- Set a calendar reminder to review permit changes before each major phase and near February 16, 2027.
What you need to provide for project-specific instructions
The exact permit cannot be selected without the project location. To identify the correct authority and deadline, gather the state, territory, tribal area or federal jurisdiction; site address and county; total common-plan disturbance; anticipated start date; receiving waters; and the parties controlling design and daily construction. With those details, the permitting authority can confirm the correct permit, portal, fee, SWPPP format, waiver tests and authorization timing.
Frequently Asked Questions
Who needs construction stormwater permit coverage?
Generally, construction activity disturbing one or more acres needs NPDES stormwater coverage. A smaller area is included when it is part of a common plan of development or sale that will ultimately disturb at least one acre. EPA or another permitting authority may also designate additional activities. The operator or operators responsible for construction-plan control or day-to-day compliance must obtain and maintain the required coverage.
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Is EPA’s Construction General Permit used everywhere in the United States?
No. EPA’s 2022 CGP applies only where EPA remains the NPDES permitting authority. Many states administer their own programs, and tribal, territorial or federal jurisdictions can have separate requirements. Check the current EPA coverage-area information and the permit portal for the project’s exact location.
When must an NOI be filed for an EPA CGP project?
For a new site under EPA’s 2022 CGP, submit the NOI at least 14 calendar days before construction begins. Coverage generally starts 14 calendar days after EPA receives a complete NOI, unless authorization is delayed or denied. A state or other NPDES authority may use a different deadline.
Can construction start immediately after submitting the NOI?
Not under the ordinary federal new-site timing rule. Wait for the applicable authorization point—generally 14 calendar days after EPA receives a complete NOI—and resolve any delay or denial. A saved draft, payment receipt or incomplete filing is not authorization.
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Under the EPA CGP, confirm eligibility, check for overlapping permits, complete endangered-species and historic-property procedures, review applicable state or tribal conditions, and prepare the SWPPP. The NOI certification represents that these conditions have been addressed.
What should a SWPPP contain?
It should describe the site, phases, disturbance limits and discharge points; show erosion and sediment controls; explain management of runoff, waste, fuel and concrete washout; assign responsible personnel; and establish inspection, corrective-action and recordkeeping procedures. Keep it aligned with the drawings and update it when the project changes.
Does a project of five acres or less qualify automatically for a waiver?
No. EPA identifies limited waiver paths, including a low-erosivity option for a construction-period R-factor below five and specified TMDL or non-impaired-water analyses. Each has conditions, documentation and certification requirements. Confirm eligibility with the authority rather than treating the acreage as an exemption.
What if a project crosses a state or federal boundary?
Determine which authority regulates each discharge area. Coverage from one authority may not cover portions under another authority’s jurisdiction. Ask each relevant authority whether separate permits, applications, SWPPPs or certifications are required.
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What happens if the project expands after the NOI is filed?
Recalculate the common-plan disturbance and review the permit. Added phases, operators, outfalls or receiving waters can change eligibility or require an update. Contact the permitting authority before beginning the changed work and revise the SWPPP and filings as required.
Which federal permit applies near February 16, 2027?
EPA states that the modified 2022 CGP expires on February 16, 2027, and EPA published a proposed 2027 CGP on August 3, 2026. Confirm the final permit, effective date and transition instructions on the live EPA page before filing for a project that starts near or after that date.
The Bottom Line
For an EPA-regulated new site, determine coverage and operators, complete eligibility screening, prepare the SWPPP, file a complete NOI through NeT at least 14 calendar days before construction, and wait for authorization. Because most U.S. sites fall under state or other NPDES authorities, verify the jurisdiction and current permit before relying on the federal timeline.
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