Only a trained person may make the opacity observation for purposes of OAR 340-256-0100 through 340-256-0140. A trained person may use a Ringelmann Smoke Chart or DEQ approved opacity equipment to measure emission opacity.
[NOTE: Publications referenced are available from the agency.]
Or. Admin. Code § 340-256-0150
Publications: Publications referenced are available from the agency.
Statutory/Other Authority: ORS 468 & 468A
Statutes/Other Implemented: ORS 468A.360