OAR 340-220-0120
Actual Emissions
(1)
Actual emissions include, but are not limited to, routine process emissions, fugitive emissions, and excess emissions from maintenance, startups and shutdowns, equipment malfunction, and other activities, but do not include categorically insignificant activities and secondary emissions.(2)
Actual emissions must be directly measured with a continuous monitoring system or calculated using a material balance or verified emission factor determined under division 220 in combination with the source’s actual operating hours, production rates, or types of materials processed, stored, or combusted during the specified time period.(3)
An owner or operator electing to pay on actual emissions must obtain emission data and determine regulated pollutant emissions using one of the following methods:(a)
Continuous monitoring systems used in OAR 340-220-0130 (Determining Emissions from Continuous Monitoring Systems);(b)
Verified emission factors developed for a particular source or a combination of sources venting to a common stack using OAR 340-220-0170 (Verified Emission Factors);(c)
Material balances determined using OAR 340-220-0140 (Determining Emissions Using Material Balance), 340-220-0150 (Determining VOC Emissions Using Material Balance), or 340-220-0160 (Determining Sulfur Dioxide Emissions Using Material Balance); or(d)
Verified emission factors for source categories developed using OAR 340-220-0170 (Verified Emission Factors)(11).
Source:
Rule 340-220-0120 — Actual Emissions, https://secure.sos.state.or.us/oard/view.action?ruleNumber=340-220-0120.