National Environmental Law: EIA Permit Gate Simulator (2D)

This 2D counterpart runs the same real Gaussian-plume atmospheric dispersion model behind national environmental-permitting law, split across three linked panels: a pannable, zoomable top-down plan view of the plume and property boundary, a vertical concentration profile showing the full Gaussian shape at any downwind distance you probe, and a downwind decay chart tracing concentration against the legal limit. Adjust emission rate, stack height, wind speed, property-boundary distance and Pasquill–Gifford stability class, then drag and click around the plan view to inspect the modeled concentration anywhere on the site — the same modeled-compliance test a national environmental regulator's dispersion-modeling review would run before issuing a Permit Approved, Conditional Permit, or Denied — Full EIS Required verdict.