What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Before construction begins, a project may need several separate permits. The U.S. Environmental Protection Agency’s May 11, 2026 action concerns one of them: Clean Air Act New Source Review (NSR), a preconstruction air-permitting program for certain new or modified stationary sources. EPA proposed changing how “begin actual construction” is defined; the proposal is not a finalized rule. It does not establish a general EPA prohibition on converting temporary structures.
What permits may be required before construction?
There is no single permit that applies to every construction project. Requirements depend on the project’s activities, location, potential discharges or emissions, and the agencies administering the relevant programs. A project may need more than one authorization, and one permit does not replace another.
As an Amazon Associate I earn from qualifying purchases.
| Permit track | What it addresses | Potential trigger | Who administers it |
|---|---|---|---|
| Clean Air Act New Source Review (NSR) | Air pollution from certain stationary sources | A new source or modification that meets applicable program requirements | EPA or a delegated permitting authority, depending on the program and location |
| Construction stormwater (NPDES) | Stormwater discharges associated with construction activity | A qualifying discharge and disturbed area, generally at least one acre, including certain smaller sites in a common plan that will ultimately disturb at least one acre | EPA in EPA-administered areas, or the authority administering the program elsewhere |
| Corps permit | Work involving waters or fills in circumstances covered by Corps permitting | Work that falls within the applicable Corps permit and its conditions | The relevant U.S. Army Corps of Engineers district |
These are distinct regulatory questions. A project should identify each applicable permit track rather than assume that a construction approval or one environmental permit covers all activities. EPA’s permitting overview describes federal environmental programs and explains that many are administered by other governments under delegated authority.
What did EPA propose about air permits?
NSR is a preconstruction permitting program under the Clean Air Act. It applies to certain stationary air pollution sources, including new construction and modifications. EPA’s NSR program page describes the program and notes that permitting questions can require case-by-case guidance.
On May 11, 2026, EPA proposed revising the definition of “Begin Actual Construction” and adding the term “pollutant-emitting activities.” The agency said that, if finalized as proposed, certain non-emitting components or structures could be built before a major NSR permit. The proposal is not currently a general authorization to begin construction without an air permit: whether NSR applies, and what may proceed, depends on the existing rules and the project’s circumstances.
EPA’s release gave specific examples of components that could be treated as non-emitting, including certain cement pads, wiring, piping, and associated support structures. It does not establish a blanket exemption for every structure or project component. EPA said the proposal would have a 45-day comment period; that procedural period does not mean the proposal has been finalized. See the May 11, 2026 EPA announcement for the proposal and its stated terms.
EPA Administrator Lee Zeldin described the proposal as a way to address issues affecting infrastructure and technological development. That is the Administrator’s stated rationale, not a quantified finding about the proposal’s effects.
Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesCan construction start before an air permit is approved?
Do not assume that it can. NSR is a preconstruction program, so a source that requires an NSR permit generally must obtain the required authorization before beginning the regulated construction. The 2026 proposal would, if finalized as proposed, change how certain non-emitting work is treated; it is not itself effective permission to start that work now.
For a project that may need NSR, determine whether the source is new or being modified, which pollutants and emissions are relevant, and which authority administers the applicable program. Ask that authority which activities are covered by the permit requirement and whether any site preparation or non-emitting component work may proceed under current requirements. Do not rely on the proposed definition until it is finalized and effective.
Do I need a stormwater permit for my construction site?
Stormwater coverage is separate from an air permit. In EPA-administered areas, construction stormwater coverage generally applies when a qualifying operator’s activity will discharge stormwater and disturb at least one acre, or disturb less than one acre as part of a common plan of development or sale that will ultimately disturb at least one acre. Other applicability conditions and possible designations matter, so acreage alone does not settle every case.
Rank #4
EPA identifies preparing a Stormwater Pollution Prevention Plan (SWPPP) and submitting a Notice of Intent (NOI) among the steps for obtaining coverage under its construction general permit. The NOI must be submitted on the schedule and under the conditions applicable to the site; consult the current permit and EPA’s construction general permit coverage guidance. The page also describes limited waiver circumstances for some small sites, subject to conditions. Requirements may differ where another authority administers the stormwater program.
Recommended Free Tools
Can a temporary structure remain after construction?
There is no general answer in EPA’s NSR proposal. That proposal concerns Clean Air Act air-permitting definitions; it does not create a general EPA rule forbidding conversion of temporary structures.
Temporary structures or fills associated with work in waters may be subject to conditions in a Corps permit. The 2026 nationwide permit notice describes removal requirements in particular Corps-permit contexts; those provisions should not be treated as an EPA-wide conversion ban or as a rule for every temporary building. Whether a structure may remain, be converted, or requires separate authorization depends on the applicable permit, its conditions, the location, and the work involved. Local building requirements may also apply.
Who issues the permit for my project?
The issuing authority depends on the permit program and the project’s location. EPA directly issues some permits and delegates administration of many federal programs to states, territories, Tribal nations, or municipalities. Work involving waters may instead require review by the relevant Corps district. A local building department may have separate requirements.
Quick Recap
- List the project activities and location. Identify stationary sources or modifications, land disturbance and stormwater discharges, and any work involving waters or fills.
- Identify the administering authority for each permit track. Start with EPA’s permitting overview and contact the relevant EPA office or state permitting authority; for potential Corps work, contact the applicable Corps district.
- Confirm timing and conditions before work begins. Ask which applications, plans, notices, permits, or authorizations are required and which activities they cover. Do not treat a proposed rule as an effective permit condition or exemption.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
