01366023

Component

Since 2005, the Massachusetts Department of Transportation (MassDOT) has required, through a contract specification, contractors and sub-contractors working on Highway Division job sites to have emission control devices such as Diesel Oxidation Catalysts (DOC) or Diesel Particulate Filters (DPF) installed on all non-road construction equipment greater than 50 horsepower. The purpose of MassDOT’s diesel retrofit program is to help achieve diesel emission reductions from non-road construction equipment that result in beneficial air quality improvements, specifically particulate matter, for construction workers and the general public. Since the program began, over 1,200 pieces of non-road construction equipment have been inspected and certified by MassDOT as being in compliance with its diesel retrofit requirement. This type of diesel retrofit program within Massachusetts started in 1998 during the construction of the Central Artery/Tunnel Project in Boston. This main objective of this paper is to discuss and present the specifics of MassDOT’s diesel retrofit specification for retrofitting non-road diesel powered construction equipment over 50 horsepower, including its development, implementation, and lessons learned. The paper also provides an overview of non-road diesel emission regulations along with the benefits of reducing diesel emission particles.

This paper was sponsored by TRB committee AHD60 Maintenance Equipment

01362476

12-1734

English

13p

2012

Transportation Research Board 91st Annual Meeting

Digital/other

Figures; Photos; References

Air quality management; Construction equipment; Emission control devices; Particulates; Retrofitting; Road construction

Massachusetts Department of Transportation

Environment; Highways; Maintenance and Preservation; Vehicles and Equipment; I15: Environment; I61: Equipment and Maintenance Methods

Transportation Research Board Annual Meeting 2012 Paper #12-1734

TRIS, TRB

Feb 8 2012 5:04PM