Air Quality Permit Cost Calculator
Estimate air quality permit application costs for minor source, Title V, and PSD/NSR permits including modeling, BACT analysis, and compliance.
About this calculator
This calculator estimates the cost and timeline of preparing an air quality permit application under the Clean Air Act's federal permitting framework (40 CFR Parts 51, 52, 70, and 71), which sponsors of a stationary emission source navigate through state SIP-delegated programs. Permit type is the primary cost driver: a minor source permit is the least involved, a synthetic minor voluntarily accepts emission caps to stay below major-source thresholds, a Title V operating permit applies to major sources under ongoing federal oversight, and a PSD/NSR (Prevention of Significant Deterioration / New Source Review) permit is required for new major sources or major modifications, carrying the heaviest analytical burden. Each additional emission unit and each additional regulated pollutant (criteria pollutants and hazardous air pollutants) adds its own calculation and regulatory-review cost, since every unit and pollutant needs its own emissions quantification.
Dispersion modeling — screening-level (e.g., AERSCREEN) or refined (e.g., AERMOD) — is added when the facility's emissions could affect ambient air quality standards near the source. BACT (Best Available Control Technology) analysis applies in PSD review; the stricter LAER (Lowest Achievable Emission Rate) standard applies instead when the facility sits in a nonattainment area for a given pollutant. All dollar figures here are planning-level estimates — actual state agency fees and consultant rates vary widely by jurisdiction.
Inputs
Results
Total permit cost ($)
$20,650.00
≈ 10 gaming PCs
How to Use This Calculator
- Select the Permit Type (minor, major, Title V, etc.) for the project.
- Enter Emission Units count and Number of Regulated Pollutants.
- Set the Modeling Required level and BACT/LAER Analysis level.
- Enter Total Emissions (tons/year) — this affects permit class and fee schedule.
- Review Total Permit Cost ($) to budget for the air quality permitting phase of the project.
How the result changes with Total emissions (tons/year)
| Total emissions (tons/year) | Total permit cost ($) |
|---|---|
| 25 | $20,525.00 |
| 38 | $20,590.00 |
| 75 | $20,775.00 |
| 125 | $21,025.00 |
What each input means
- Permit type
- The permit class drives base consulting fees, per-unit and per-pollutant rates, and the compliance timeline.
- Emission units
- Number of emission sources (boilers, engines, process vents, etc.).
- Regulated pollutants
- Number of criteria pollutants and HAPs to evaluate.
- Modeling required
- Whether dispersion modeling is needed, and at what level of rigor.
- BACT/LAER analysis
- Best Available Control Technology or, in nonattainment areas, the stricter Lowest Achievable Emission Rate analysis.
- Total emissions (tons/year)
- Total potential to emit across all pollutants in tons per year.
What each result means
- Total permit cost ($)
- One-time cost to prepare and submit the permit application.
- Base consulting fee ($)
- Core consulting effort for permit preparation.
- Air dispersion modeling ($)
- Cost of AERSCREEN or AERMOD modeling if required.
- BACT/LAER analysis ($)
- Best Available Control Technology or Lowest Achievable Emission Rate analysis.
- State application fee ($)
- Agency filing fee (varies by state and emissions).
- Annual compliance cost ($)
- Ongoing monitoring, recordkeeping, and annual reporting.
- Estimated timeline (months)
- Expected time from application prep start to permit issuance.
- Emissions inventory cost ($)
- Cost to prepare detailed emissions calculations and inventory.
How this is calculated
Worked example, using the default values
- Identify Input Parameters6 parametersPermit type = 0, Emission units = 3, Regulated pollutants = 4, Modeling required = 0, BACT/LAER analysis = 0, Total emissions (tons/year) = 50 = 6 input(s) provided
- Calculate Total permit costTotal permit cost = baseFee + emissionUnitCost + pollutantCost + modelingCost + bactCost + applicationFee + inventoryCost20650 = $20,650
- Calculate Base consulting fee5000 = $5,000
- Calculate Air dispersion modeling0 = $0
Engine last updated . Checked against 3 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
What actually separates a Title V permit from a PSD/NSR permit?
Title V is an operating permit required for major sources under ongoing Clean Air Act oversight, consolidating all of a facility's applicable requirements into one document with periodic renewal and compliance reporting. PSD (Prevention of Significant Deterioration) and NSR (New Source Review) are pre-construction permits triggered specifically when a source is newly built or majorly modified in a way that would significantly increase emissions, and they require the more intensive BACT or LAER control-technology analysis and often dispersion modeling before construction can begin.
When is LAER required instead of BACT?
LAER (Lowest Achievable Emission Rate) is the stricter control standard, and it applies when a project is located in a nonattainment area — a region that doesn't meet a National Ambient Air Quality Standard for the relevant pollutant. BACT (Best Available Control Technology) applies instead in attainment areas subject to PSD review. LAER doesn't allow the same cost-benefit balancing that BACT does, which is why this calculator's cost model treats it as the more expensive of the two.
Why does adding more emission units or pollutants increase the permit cost so directly?
Each emission unit (a boiler, engine, process vent, etc.) requires its own emissions calculations, applicable-requirement determination, and often its own control-technology review, and each regulated pollutant across those units needs separate quantification and comparison against its own regulatory limits. The calculator scales per-unit and per-pollutant costs with the permit type because major-source permits (Title V, PSD/NSR) demand a more rigorous, better-documented analysis per unit and per pollutant than a minor source permit does.
Are the dollar figures from this calculator an actual quote I can budget against?
No — they're planning-level estimates built from typical relative cost drivers (permit class, unit count, pollutant count, modeling and BACT/LAER needs), not a specific state's published fee schedule or a specific consulting firm's rate card. Actual state application fees and consultant costs vary substantially by jurisdiction and project complexity, so treat this as a starting point for budgeting, not a binding cost quote.
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