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Service Environmental Modelling & Specialist Services

Predict. Quantify. Mitigate. Comply.

We use advanced scientific modelling and simulation to forecast environmental impacts before they occur — enabling defensible, data-driven decisions for permitting, operations, expansions, and incident back-analysis. Coverage includes air dispersion & odour, noise, groundwater fate & transport, hydrodynamics/outfalls/thermal plumes, mixing zones, airshed & source apportionment, and watershed management & material circularity.

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Why modelling matters

High-quality modelling is the bridge between technical reality and decision-making. It strengthens approvals, reduces uncertainty, and ensures mitigation is designed before costly changes become unavoidable.

Better decisions. Lower risk. Faster approvals.

  • Faster clearances: submission-ready reports with clear assumptions and compliance conclusions
  • Lower environmental risk: hotspot and receptor exposure identified early
  • Cost optimisation: mitigation designed before layout/capex is locked
  • Community confidence: transparent, science-based evidence during review or complaints

When you typically need modelling

  • New projects, expansions, modernisation, capacity changes
  • Permitting/EIA submissions and regulator questions
  • Stack height / dispersion / buffer zone decisions
  • Outfall, mixing zone, thermal plume and dredging studies
  • Noise complaints, boundary exceedances, construction planning
  • Contamination risk, plume migration, remediation option testing

Our specialist modelling capabilities

Each block below is written to match how people search (and how AI summarises) environmental modelling services.

Air + Odour Air dispersion modelling visualization

Air quality & odour dispersion modelling

Predict transport and concentration of pollutants/odour under real meteorology to support permitting, operational planning, and defensible compliance conclusions.

  • Stack emission impact assessment (receptor grids + sensitive receptors)
  • Odour nuisance studies + scenario testing
  • Worst-case / sensitivity runs, buffer zone planning
  • Mitigation option verification (before/after)
AERMOD CALPUFF SCREEN / ISC CPCB / USEPA / IFC methods
Noise Noise and monitoring concept

Noise impact & acoustic modelling

3D noise propagation modelling to quantify impacts at receptors, evaluate compliance, and design mitigation.

  • Noise Impact Assessment (NIA) for EIA/permitting
  • 3D noise maps, contour plots, receptor compliance tables
  • Construction noise + operational worst-case scenarios
  • Mitigation design (barriers, layouts, equipment controls)
3D mapping Receptor analysis Mitigation verification
Groundwater Groundwater field work

Groundwater flow & fate/transport modelling

Simulate groundwater movement and contaminant transport to predict plume migration, manage risk, and test remediation options.

  • Flow modelling + aquifer conceptual model development
  • Plume migration prediction + receptor risk assessment
  • Monitoring network optimisation + uncertainty handling
  • Remediation strategy evaluation (scenario comparisons)
MODFLOW MT3DMS / RT3D / PHT3D Visual MODFLOW
Hydrodynamics Hydrodynamic modelling concept

Hydrodynamic modelling (outfalls, thermal plumes, dredging, mixing zones)

2D/3D hydrodynamics to understand currents/transport and evaluate near-field and far-field behaviour for coastal/river/estuary systems.

  • Outfall dispersion + mixing zone assessments
  • Thermal plume / salinity / water quality transport scenarios
  • Dredging and sediment plume risk scenarios
  • Design optimisation (diffusers, alignment, discharge controls)
MIKE 21 / MIKE 3 Delft3D (FLOW / FM) Near-field mixing zone (CORMIX)
Waste DPR Waste management facility

DPR & feasibility studies for cities and industries

Science-backed waste planning for sustainable cities & industries, aligned to compliance and operational reality.

  • Biomedical wastes
  • Agro wastes
  • Municipal solid wastes
  • Construction & demolition (C&D) wastes
  • Industrial and special wastes
Feasibility Techno-economic Implementation roadmap
Airshed Airshed management and source apportionment

Airshed management & source apportionment

Regional-scale air quality analysis to quantify “who contributes how much” and prioritise controls that deliver measurable ambient improvements.

  • Emission inventory (industry/traffic/area sources) + QA/QC
  • Receptor & dispersion-based source apportionment approaches
  • Scenario testing for action plans (what reduces PM/NOx/SO₂ fastest)
  • Hotspot mapping + compliance evidence + communication-ready outputs
Emission inventory Source apportionment Scenario modelling Action-plan support
Watershed Watershed management and material circularity

Watershed management & material circularity

Catchment-informed water planning plus circular material flows to reduce freshwater stress, strengthen compliance, and improve resilience.

  • Water balance + catchment risk screening (availability, quality, stress)
  • Stormwater and runoff pathway understanding + control planning
  • Material flow analysis (MFA) to identify circularity interventions
  • Reuse/recovery pathways, feasibility, and implementation roadmaps
Water balance Catchment risk MFA / Circularity Feasibility + roadmap

What you receive (typical deliverables)

  • Assumptions + input dataset register (traceability)
  • Scenario matrix (baseline / worst-case / sensitivity)
  • Contours / exceedance maps + receptor compliance tables
  • Hotspot diagnosis + key drivers (what causes exceedance)
  • Mitigation options + verification runs (before/after)
  • Submission-ready technical report pack

We can also provide summary slides for management/board, and regulator response packs for review cycles.

Inputs we typically need from you

  • Site coordinates, layout, elevations/terrain and land use (as available)
  • Source terms: stacks/vents, flows, temperatures, emissions (or monitoring data)
  • Operating schedule + scenarios to evaluate (normal, upset, worst-case)
  • Receptors: boundary points, sensitive receptors, distances
  • For water/hydro: bathymetry, tides/flows, discharge characteristics
  • Compliance purpose: permit/EIA, expansion, complaint, incident analysis

If you don’t have all inputs, we define a defensible approach to gaps (assumptions, conservative bounding, sensitivity).

Industries & asset types we support

Industrial and infrastructure contexts where modelling evidence directly affects approvals, operations, and stakeholder confidence.

Industrial

  • Oil & Gas
  • Power
  • Cement & Steel
  • Chemicals
  • Manufacturing

Infrastructure

  • Ports & coastal works
  • Industrial parks
  • Transport corridors
  • Urban development

Public systems

  • ULBs / smart cities
  • Outfalls & utilities
  • Waste systems
  • Air/noise planning

FAQ (how clients and regulators ask it)

These questions are intentionally written in “search language” to improve AI + Google understanding.

AERMOD vs CALPUFF — which one do I need?

AERMOD is widely used for steady-state dispersion with boundary-layer parameterisation, while CALPUFF supports non-steady state conditions and can be better suited for complex meteorology or longer-range transport. We select based on terrain, receptor spread, meteorology and regulatory context, then document the rationale.

What data is required for air dispersion modelling?

At minimum: source parameters (emission rates, stack/vent details), site layout, receptor locations, and meteorological inputs. If some inputs are missing, we define conservative assumptions and run sensitivity tests so decisions remain defensible.

Do you provide noise contour maps and receptor compliance tables?

Yes. We provide receptor-focused outputs: contours, exceedances, and mitigation verification.

What is a mixing zone study for an outfall?

A mixing zone study evaluates how a discharge (flow, temperature, salinity or contaminants) dilutes and disperses, both near-field and far-field, to assess compliance at relevant boundaries/receptors and optimise diffuser/outfall design.

Can you do airshed management and source apportionment?

Yes. We support emission inventory development, source contribution analysis, scenario testing for action plans, and evidence packs that are usable for regulators and stakeholders.

Do you cover watershed management and material circularity?

Yes. We link catchment-informed water risk and water balance thinking with material flow analysis (MFA) and circularity interventions to reduce environmental load and strengthen compliance and resilience.

Book your free appointment today

Share your site context and approval need. We’ll recommend the right modelling approach, define required inputs, and outline a practical, regulator-ready plan.

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