AERMOD Air Dispersion Modelling Consultant & Subcontractor

AERMOD Modelling Subcontractor for Environmental Consultancies

DSTechnoverse is a specialist AERMOD air dispersion modelling subcontractor. We work behind the scenes for environmental consultancies, EPC contractors, EHS teams, and industries that need regulatory-grade air quality modelling but do not want to build an in-house modelling desk. You keep the client relationship and sign-off; we do the technical heavy lifting.

Air dispersion modelling is time-consuming, tool-heavy, and easy to get wrong under regulatory scrutiny. Outsourcing the modelling to a dedicated team lets you take on more Environmental Impact Assessment (EIA) and consent-to-establish projects without hiring, training, or maintaining expensive modelling software and meteorological data pipelines.

AERMOD Consultant for Industries and Project Developers

Not every client is a consultancy. Plant owners, project developers and EPC contractors also come to us directly as their AERMOD consultant: a manufacturing unit applying for Consent to Establish or an expansion, a real-estate or township project whose Environmental Clearance needs the air chapter, a hospital or data centre with a bank of DG sets, or a site answering a State Pollution Control Board query about stack height, fugitive dust or odour.

For these clients we scope the study from what you already have: stack details or DG ratings, a site plan and any baseline monitoring. We tell you on the first reply which pollutants and averaging periods the study needs, what data is missing and what it will cost. You receive the modelling report signed by our modeller, with the GLC tables, isopleth maps and NAAQS comparison the regulator expects, and we answer technical queries after submission. See our guides to odour dispersion modelling and environmental studies for construction and real-estate projects.

What Our AERMOD Modelling Service Covers

• AERMOD (US EPA preferred model) runs for point, area, volume, and line sources.
• AERMET meteorological data pre-processing from surface and upper-air stations.
• AERMAP terrain processing using SRTM/DEM elevation data.
• BPIP-PRIME building downwash analysis for stacks near structures.
• Emission inventory preparation and stack parameter validation.
• GLC (ground level concentration) contour maps and receptor-grid outputs.
• Comparison against NAAQS, WHO, and site-specific ambient air quality standards.
• Full modelling report ready to drop into your EIA / EC application.

Who We Support

• Environmental consultancies needing overflow or white-label modelling capacity.
• EIA coordinators preparing Environmental Clearance (EC) documentation.
• EPC and infrastructure contractors bidding on projects with air quality obligations.
• Industries (cement, power, chemical, pharma, steel, mining) needing stack impact studies.
• International consultancies looking for a cost-effective offshore modelling desk.

Why Outsource AERMOD Modelling to DSTechnoverse

1. 1Regulatory-Ready Output: Every run is documented, reproducible, and defensible under review by pollution control boards and appraisal committees.
2. 2Faster Turnaround: A dedicated modelling desk delivers standard studies in days, not weeks, so you never miss a submission deadline.
3. 3Lower Cost Than In-House: No software licences, no meteorological data subscriptions, no idle specialist salaries — you pay per project.
4. 4Confidential & White-Label: Reports are delivered unbranded so you present them as your own work to your client.
5. 5QA/QC Built In: Independent review of inputs, parameters, and outputs before anything reaches you.

Industries and Sources We Model

• Cement plants — kiln, raw mill, coal mill and cooler stacks, plus fugitive dust from crushers, stockpiles and packing.
• Thermal power plants and captive power — boiler stacks for SO₂, NOx and particulates, coal handling and ash dyke dust.
• Steel, sponge iron and ferro-alloy units — furnace, DRI kiln and sinter stacks, and material handling.
• Chemical, pharmaceutical API and pesticide plants — process vents, incinerators, boilers and thermic fluid heaters.
• Sugar mills, distilleries and food processors — bagasse and coal-fired boilers, DG sets.
• Refineries, fertiliser and petrochemical units — multiple stacks, flares and cumulative assessments.
• Mines, crushers and quarries — fugitive dust from blasting, haul roads and loading, modelled as area and volume sources.
• Hospitals, common biomedical waste and hazardous waste facilities — incinerator stacks.
• Commercial and residential projects — DG set stacks for building-permission and EC studies.

What You Receive

• Maximum incremental GLC for each pollutant and averaging period, with its distance, direction and coordinates.
• Concentrations at every sensitive receptor — villages, schools, hospitals — with background and cumulative totals.
• Isopleth maps on a basemap, wind rose, site location map and receptor grid map.
• Comparison with the NAAQS 2009, including the project’s share of each total.
• A modelling report in the structure used in Indian EIA practice, or written to your consultancy’s template and delivered unbranded.
• The model archive — AERMET and AERMOD input and output files — so the study can be reviewed and reproduced.

Two Ways to Work With Us

Hire our modelling team for complete studies, complex sites and anything that will be scrutinised at appraisal. Or run standard stack studies yourself in AERMOD Studio, our browser-based software that runs the US EPA models and produces the same tables, maps and report — the demo is free and uses your own site. Many consultancies use both: the software for screening and design iterations, our team for the final submission study.

When an AERMOD Study Is Needed in India

Most of our AERMOD work supports one of a small number of regulatory moments. Knowing which one you are in decides the scenarios, the averaging periods and how the results must be presented, so we confirm it before quoting.

• Environmental Clearance (EC) under the EIA Notification, 2006 — the Terms of Reference usually require predicted incremental ground-level concentrations (GLCs) from the project, added to the measured baseline and compared with the National Ambient Air Quality Standards.
• Consent to Establish (CTE) from the State Pollution Control Board for a new plant, a new stack or a capacity expansion.
• Expansion and modernisation projects, where the existing and proposed sources must be modelled separately and together.
• Cumulative impact assessment for industrial clusters, where neighbouring sources contribute to the same receptors.
• Stack height justification and design optimisation, where modelling tests whether a taller or relocated stack actually lowers the maximum GLC.
• Complaint, odour and dust investigations, where modelling helps show which source can and cannot explain what nearby residents experience.

Inputs We Need From You

Turnaround depends far more on the completeness of inputs than on model run time. A complete input pack lets us freeze the model on day one; a partial one means assumptions that a reviewer may later question.

• Source list with coordinates (or a georeferenced layout), stack height, internal diameter, exit temperature and exit velocity or volumetric flow.
• Emission rates for each pollutant, with their basis: design values, CEMS or stack monitoring results, or emission factors for fugitive sources.
• Building dimensions near the stacks, so building downwash can be assessed with BPIP-PRIME.
• Site boundary and the study area agreed in the ToR (often a 10 km radius for EIA).
• Baseline ambient air quality results from your monitoring stations, so the predicted increment can be added to the right baseline value.
• Hourly meteorological data from the site station for the monitoring season, if available; otherwise we discuss representative alternatives.

What Drives the Cost and Turnaround of an AERMOD Study

We quote per project. The price and the timeline are set by the scope, not by the software:

• Number of sources, pollutants and averaging periods to report.
• Meteorological data: one season of site data versus a full year, and how much processing it needs.
• Terrain: flat sites are simpler than hilly or coastal sites that need careful terrain and land-use treatment.
• Building downwash and the number of nearby structures.
• Scenarios: existing, proposed, cumulative, upset or alternative stack designs each add runs and reporting.
• Report format: tables and contours for your own chapter, or a full standalone modelling report.

Why Modelling Reports Get Queried, and How We Prevent It

These are the issues reviewers raise most often. Each one is checked in our QA review before anything reaches you, and every study is delivered with its input files and a method statement so it can be rerun if a reviewer asks.

• Meteorological data that does not represent the site, or calm hours handled without explanation.
• Stack parameters that do not match the emission rates or the process description elsewhere in the EIA.
• A receptor grid too coarse to find the true maximum, or one that stops short of sensitive receptors.
• Increments added to the wrong baseline statistic, or compared with a standard for a different averaging period.
• Building downwash ignored for stacks close to tall structures.
• No record of model versions, options and input files, so the results cannot be reproduced on request.

How DSTechnoverse Can Help

• Scoping Call: We agree on sources, pollutants, averaging periods, receptor grid, and the standards to screen against.
• Data Handling: You share stack data and site coordinates; we handle met data, terrain, and land use.
• Modelling & QA: We build, run, and independently check the AERMOD model.
• Deliverables: You receive contour maps, result tables, and a write-up formatted to your template.
• Revisions: We support responses to regulator queries until the study is accepted.

Frequently Asked Questions

Guides and Resources

• Run standard stack studies yourself: AERMOD Software (free demo) →
• Meteorological data for AERMOD after NOAA ISD stopped in 2025 →
• What an AERMOD modelling subcontractor does →
• The AERMOD input data checklist →
• How much AERMOD modelling costs →
• Turnaround time for outsourced AERMOD studies →
• 10 common AERMOD mistakes that fail review →
• Choosing an air dispersion model →
• Air quality modelling for Environmental Clearance →
• Air quality modelling for Consent to Establish →
• QA/QC of a dispersion modelling report →