310 CMR 60.06
CO Emission Limits for State Fleet Passenger Vehicles
(1) Purpose, Scope and Authority. The purpose of 310 CMR 60.06 is to assist the
Commonwealth in achieving the greenhouse gas emissions reduction goals adopted pursuant to
M.G.L. c. 21N, § (3)(b) by reducing carbon dioxide (CO ) emissions from certain vehicles
owned or leased by Commonwealth of Massachusetts Executive Offices through the imposition
of declining annual aggregate emission limits. 310 CMR 60.06 is promulgated pursuant to
M.G.L. c. 21N, § 3(d) and is also promulgated pursuant to M.G.L. c. 21A, §§ 2, 8 and 16, and
M.G.L. c. 111, §§ 2C and 142A through 142M, to prevent and abate conditions of air pollution
from the CO emissions from the mobile sources specified in 310 CMR 60.06. The CO
emissions limits set forth in 310 CMR 60.06(6) are applicable for the years 2021 through 2025
and thereafter beginning January 1, 2021.
(2) Definitions. The terms used in 310 CMR 60.06 are defined in 310 CMR 60.06 and in
310 CMR 60.00. Where a term is defined in 310 CMR 60.06 and in other sections of 310 CMR
60.00, the definition in 310 CMR 60.06 shall apply.
Department means the Massachusetts Department of Environmental Protection.
Emergency Vehicle means any publicly owned or leased vehicle operated by a sworn officer in
performance of their duties, any authorized emergency vehicle used for fighting fires, any
publicly owned or leased authorized emergency vehicle used by an emergency medical
technician or paramedic, or used for towing or servicing other vehicles, or repairing damaged
lighting or electrical equipment, or any ambulance used by a private entity under contract with
a public agency.
Executive Office means the Executive Office of Administration and Finance (A&F), the
Executive Office of Education (EOE), the Executive Office of Energy and Environmental Affairs
(EEA), the Executive Office of Health and Human Services (EOHHS), the Executive Office of
Housing and Economic Development (EOHED), the Executive Office of Labor and Workforce
Development (EOLWD), the Executive Office of Public Safety and Security (EOPSS), and the
Massachusetts Department of Transportation (MassDOT), including the agencies, boards,
bureaus, commissions, committees, councils, departments, divisions, groups, guards, homes,
laboratories, libraries, offices, police, programs, systems, trusts, universities and other entities
within each Executive Office, and entities whose governing members or board include(s) the
Secretary of an Executive Office pursuant to appointment by the Governor, or to the
requirements of a Massachusetts General or Session Law.
Passenger Vehicle means any motor vehicle with a gross vehicle weight rating of less than
10,000 pounds designed primarily for transportation of persons and having a design capacity of
12 persons or less and that has an Environmental Protection Agency fuel economy sticker
pursuant to 40 CFR Part 600 Fuel Economy and Greenhouse Gas Exhaust Emissions of Motor
Vehicles. Passenger vehicle does not include transit vehicles or vehicles primarily designed to
transport property or with special features enabling off-road operation and use, including but not
limited to, pickup trucks, cargo vans, emergency vehicles, test vehicles, non-road vehicles.
Test Vehicle means an experimental or prototype motor vehicle which appears to have very low
emission characteristics or a used motor vehicle within which an experimental motor vehicle
pollution control device is installed, and which has also received a test vehicle or fleet permit
from the California Air Resources Board pursuant to Manufacturers Advisory Correspondence
No. 83-01.
Transit Vehicle means any vehicle used to transport paying customers.
(3) Applicability. 310 CMR 60.06 is applicable to Executive Offices, except that an Executive
Office is not subject to annual CO emission limits unless it owns or leases 30 or more passenger
vehicles, as determined by the Department in its sole discretion.
(4) General Requirements.
(a) For calendar year 2018 and for every calendar year thereafter, each Executive Office shall
meet its passenger vehicle CO emission limit specified in 310 CMR 60.06(6).
(b) By November 1, 2017, each Executive Office shall provide the Department with the
information specified in 310 CMR 60.06(8) for the time period from January 1, 2016 through
December 31, 2016 for each of its vehicles that is not a passenger vehicle.
(c) By March 1, 2018, each Executive Office shall provide the Department with the
information specified in 310 CMR 60.06(8) for the time period from January 1, 2017 through
December 31, 2017 for each of its vehicles that is not a passenger vehicle.
(d) By March 1, 2019 and by March 1 of each year thereafter, each Executive Office shall
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submit a report to the Department for the previous calendar year on its passenger vehicles as
specified in 310 CMR 60.06(7).
(e) The Department may specify the format and process by which any submission required
pursuant to 310 CMR 60.06 shall occur, including electronic submission requirements.
(5) Calculation of CO Emissions. Each Executive Office shall calculate the CO emissions for
passenger vehicles by using the applicable equation:
(a) for gasoline fueled vehicles:
metric tons CO emitted/year = gallons of gasoline used * 19.8416 pounds of CO /gallon
of gasoline/2000 pounds/short ton / 1.10231 short tons/metric ton
(b) for diesel fueled vehicles:
metric tons CO emitted/year = gallons of diesel used * 22.38 pounds of CO /gallon of
diesel/2000 pounds/short ton / 1.10231 short tons/metric ton
(c) for natural gas fueled vehicles:
metric tons CO emitted/year = thousand cubic feet of natural gas used * 121.25 pounds
of CO /thousand cubic feet of natural gas/2000 pounds/short ton / 1.10231 short
tons/metric ton
(6) Annual CO Emission Limits.
(a) Individual Executive Office Limits. For each calendar year specified in 310 CMR