Code of Maine Rules
06 - DEPARTMENT OF ENVIRONMENTAL PROTECTION
096 - DEPARTMENT OF ENVIRONMENTAL PROTECTION - GENERAL
Chapter 146 - DIESEL-POWERED MOTOR VEHICLE EMISSIONS STANDARDS
Section 096-146-3 - Definitions

A. Certified inspector. "Certified inspector" means a Department of Environmental Protection employee or person designated by the Department as an inspector who is certified pursuant to the procedures for certification specified in 40 Code of Federal Regulations, Part 60, Appendix A, Method 9.

B. Compliance. "Compliance" means meeting the emission opacity standards for diesel-powered motor vehicles as established by the Board of Environmental Protection.

C. Diesel emissions. "Diesel emissions" means diesel smoke that is emitted into the environment from any diesel-powered motor vehicle.

D. Diesel emissions inspection report or inspection report. "Diesel emissions inspection report or inspection report" means a document issued by a certified inspector at the time of inspection, in such form as the Commissioner shall prescribe, containing a designation of pass or fail, which shall constitute proof of inspection.

E. Diesel-powered motor vehicle. "Diesel-powered motor vehicle" means those diesel-powered motor vehicles that have a gross vehicle weight rating of 18,000 or more pounds. Diesel-powered motor vehicle does not include a truck registered as a farm truck.

F. Diesel smoke. "Diesel smoke" means particles, including aerosols, suspended in the exhaust stream of a diesel engine which absorb, reflect, or refract light.

G. Emission opacity standards. "Emission opacity standards" means the acceptable level of peak smoke opacity for diesel-powered motor vehicles as established by the Board of Environmental Protection.

H. Emissions related repairs. "Emissions related repairs" means any emissions repair intended to bring a diesel-powered motor vehicle, which has received a fail designation during an inspection, into compliance with the established emission opacity standards.

I. Fail designation. "Fail designation" means a designation on an inspection report which signifies that the diesel-powered motor vehicle does not meet the emission opacity standards.

J. Governor. "Governor" means a mechanism installed on a diesel engine by the original equipment manufacturer for the purpose of limiting the maximum engine RPM.

K. Inspection. "Inspection" means a snap-acceleration smoke opacity test conducted by a certified inspector in accordance with the Society of Automotive Engineers (SAE) J1667 Recommended Practice, and related administrative procedures.

L. Model year. "Model year" means the year designated by the manufacturer of the diesel-powered motor vehicle and appearing on the registration certificate.

M. Opacity. "Opacity" means the degree of light-obscuring capability of emissions of visible air contaminants expressed as a percentage. For example, complete obscuration shall be expressed as 100% opacity.

N. Operator. "Operator" means the person operating the vehicle during a diesel-powered motor vehicle emissions roadside test.

O. Pass designation. "Pass designation" means a designation on an inspection report which signifies that the diesel-powered motor vehicle meets the emission opacity standards.

P. Peak smoke opacity. "Peak smoke opacity" means the highest numerical value of smoke opacity obtained through the testing procedures for the snap-acceleration smoke opacity test.

Q. SAE. "SAE" means the Society of Automotive Engineers.

R. SAE J1667. "SAE J1667" means the Surface Vehicle Recommended Practice incorporated in document number J1667 published by the Society of Automotive Engineers in February 1996, entitled "Snap-Acceleration Smoke Test Procedure for Heavy Duty Diesel Powered Vehicles", as herein incorporated by reference.

S. Snap-acceleration smoke opacity test. "Snap-acceleration smoke opacity test" means a test adopted by the Society of Automotive Engineers for the testing of diesel-powered motor vehicles. This test is commonly referred to as the SAE J1667 Recommended Practice Test. The test includes five phases: vehicle preparation; test preparation and equipment set-up; driver familiarization and vehicle preconditioning; execution of the snap-acceleration test; and calculation and reporting of final results.