Emissions

Carbon footprint experts may be useful when the disputed issue concerns the accounting of greenhouse gas emissions from defined operations, facilities, fuels, or other activities. The analysis may involve source boundaries, activity data, emission factors, direct measurements, calculation methods, and assumptions used to aggregate emissions. This is narrower than climate-change analysis because the focus is on quantifying emissions rather than determining climate effects.

Direct measurements come from testing or monitoring the actual emission stream under specified conditions. An emission factor estimates emissions by relating a pollutant quantity to an activity such as fuel burned, material processed, or production output. Because factors often represent data from groups of similar sources, the assumptions behind a factor can become important when it is applied to a particular facility or operating condition.

The analysis may compare contaminant levels or emission rates before and after the control equipment, along with operating parameters such as temperature, pressure, flow, reagent use, or other variables relevant to the technology. Maintenance history, alarms, downtime, inspection records, and monitoring data can also show whether the control system operated consistently during the period at issue.