OAR 340-256-0150
Visible Emissions: Opacity Method of Measurement

Only a trained person may make the opacity observation for purposes of OAR 340-256-0100 (Visible Emissions: General Requirements, Exclusions) through 340-256-0140 (Visible Emissions: Dealer Compliance). 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.]

Source: Rule 340-256-0150 — Visible Emissions: Opacity Method of Measurement, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=340-256-0150.

340‑256‑0010
Definitions 340‑256‑0100
Visible Emissions: General Requirements, Exclusions 340‑256‑0110
Visible Emissions: Special Requirements for Excluded Motor Vehicles 340‑256‑0130
Visible Emissions: Motor Vehicle Fleet Operation 340‑256‑0140
Visible Emissions: Dealer Compliance 340‑256‑0150
Visible Emissions: Opacity Method of Measurement 340‑256‑0160
Visible Emissions: Alternative Methods of Measuring Visible Emissions 340‑256‑0200
Certification of Pollution Control Systems: County Designations 340‑256‑0210
Certification of Pollution Control Systems: Criteria for Certification of Motor Vehicle Pollution Control Systems 340‑256‑0220
Compliance With Oregon Low Emission Vehicle Program 340‑256‑0300
Emission Control System Inspection: Scope 340‑256‑0310
Emission Control System Inspection: Government-Owned Vehicle, Permanent Fleet Vehicle and United States Government Vehicle Testing Requirements 340‑256‑0320
Emission Control System Inspection: Motor Vehicle Inspection Program Fee Schedule 340‑256‑0330
Emission Control System Inspection: Department of Defense Personnel Participating in the Privately Owned Vehicle Import Control Program 340‑256‑0340
Emission Control System Inspection: Light Duty Motor Vehicle and Heavy Duty Gasoline Motor Vehicle Emission Control Test Method for Basic Program 340‑256‑0355
Emission Control System Inspection: Emissions Control Test Method for OBD Test Program 340‑256‑0356
Emission Control System Inspection: Emissions Control Test Method for On-Site Vehicle Testing for Automobile Dealerships 340‑256‑0357
Emission Control System Inspection: Emissions Control Test Method for Clean-Screening Program 340‑256‑0358
Emission Control System Inspection: Emissions Control Test Method for Self-Service Testing Program 340‑256‑0370
Emission Control System Inspection: Renewal of Registration for Light Duty Motor Vehicles and Heavy Duty Gasoline Motor Vehicles Temporarily Operating Outside of Oregon 340‑256‑0380
Emission Control System Inspection: Light Duty Motor Vehicle Emission Control Test Criteria for Basic Program 340‑256‑0390
Emission Control System Inspection: Heavy Duty Gasoline Motor Vehicle Emission Control Test Criteria 340‑256‑0400
Emission Control System Inspection: Light Duty Motor Vehicle Emission Control Standards for Basic Program 340‑256‑0420
Emission Control System Inspection: Heavy-Duty Gasoline Motor Vehicle Emission Control Standards 340‑256‑0440
Emission Control System Inspection: Criteria for Qualifications of Persons Eligible to Inspect Motor Vehicles and Motor Vehicle Pollution Control Systems and Execute Certificates 340‑256‑0450
Emission Control System Inspection: Gas Analytical System Licensing Criteria for Basic Program 340‑256‑0465
Emission Control System Inspection: Test Equipment Licensing Criteria for OBD Test Program 340‑256‑0470
Emission Control System Inspection: Agreement With Independent Contractor
Last Updated

Jun. 8, 2021

Rule 340-256-0150’s source at or​.us