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.]

Statutory/Other Authority

ORS 468 & 468A

Statutes/Other Implemented

ORS 468A.360

History

DEQ 21-2020, amend filed 11/19/2020, effective 11/19/2020
DEQ 191-2018, minor correction filed 07/18/2018, effective 07/18/2018
DEQ 14-1999, f. & cert. ef. 10-14-99, Renumbered from 340-024-0035
DEQ 4-1993, f. & cert. ef. 3-10-93
DEQ 8, f. 4-7-70, ef. 5-11-70