Asphalt, Road Materials & Paving Products worked example

Asphalt Plant Emissions Risk Estimate with permit and opacity severity score of 15 score: a worked example

This scenario runs the asphalt plant emissions risk estimate calculation on the strong side: permit and opacity severity score of 15 score, with every other input held at its documented default. a plant team needs to rank emissions risk for a production run, maintenance issue, fuel change, or high-moisture aggregate condition

The inputs for this scenario

  • Permit and opacity severity score: 15 score (raised for this scenario; the documented default is 6)
  • High-emission event likelihood score: 5 score (unchanged)
  • Detection and control weakness score: 4 score (unchanged)

Working through the calculation

  • Applying the documented formula (Emissions screening score = permit/opacity severity × 0.40 + high-emission likelihood × 0.35 + detection/control weakness × 0.25) to the inputs above produces each figure below.
  • At this operating point the engine returns 8.75 emissions risk score for emissions screening score, the number this scenario is built around.
  • At this operating point the engine returns 15 score for permit/opacity severity score.
  • At this operating point the engine returns 5 score for high-emission likelihood score.
  • At this operating point the engine returns 4 score for detection/control weakness score.

How this compares with the baseline

  • Against the tool's baseline example, where permit and opacity severity score sits at 6 score and the headline result is 5.15 emissions risk score, this scenario comes in 69.9% above the baseline at 8.75 emissions risk score.
  • Use it during compliance walkdowns, before a high-production season, or when ranking multiple plants for capital control upgrades. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Emissions screening score: 8.75 emissions risk score (headline result)
  • Permit/opacity severity score: 15 score
  • High-emission likelihood score: 5 score
  • Detection/control weakness score: 4 score

Run it with your numbers

  • Every input above is editable in the live Asphalt Plant Emissions Risk Estimate calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.