OAR 340-256-0420
Emission Control System Inspection: Heavy-Duty Gasoline Motor Vehicle Emission Control Standards

This rule documents the standards not to be exceeded for heavy duty gasoline vehicle emission tests.

(1)

CO idle emission values:

(a)

1975–1978 Model Year: 4.0%;

(b)

1979 and Newer Model Year without catalyst: 3.0%;

(c)

1985 and Newer Model Year with catalyst: 1.0%.

(2)

Gross CO emissions exceed the applicable model year CO standard by a factor of one and one-half (1.5).

(3)

Hydrocarbon idle emission values:

(a)

1975–1978 Model Year: 500 PPM;

(b)

1979 and Newer Model Year without catalyst: 350 PPM;

(c)

1985 and Newer Model Year with catalyst: 220 PPM.

(4)

Gross HC emissions exceed the applicable model year HC standard by a factor of three (3).

(5)

Visible emission must not occur during the steady-state unloaded engine idle and raised rpm portion of the emission test from either the vehicle’s exhaust system or the engine crankcase.

(6)

The Director may grant a waiver from standards listed in sections (1)–(4) for vehicle classes that DEQ determines present prohibitive inspection problems meeting the listed standards in sections (1) – (4) if DEQ deems the motor vehicle pollution system otherwise meets the standards of this Division.
[NOTE: This rule is included in the State of Oregon Clean Air Act Implementation Plan that EQC adopted under OAR 340-200-0040 (State of Oregon Clean Air Act Implementation Plan).]

Source: Rule 340-256-0420 — Emission Control System Inspection: Heavy-Duty Gasoline Motor Vehicle Emission Control Standards, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=340-256-0420.

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 340-256-0420’s source at or​.us