Commandant
2100 Second St. S.W.
United States Coast Guard
Washington, DC 20593-0001
COMDTINST 4454.1
COMMANDANT INSTRUCTION 4454.1
Subj:
VEHICLE INSPECTION AND MAINTENANCE (I/M) PROGRAM
Ref: (a)
Inspection/Maintenance Program Requirements 40 CFR 51, Subpart S
(b)
Inspection/Maintenance Flexibility Amendments 40 CFR 51, 18 Sept 95, P.48029, Final
Rule
1.
PURPOSE. The purpose of this Commandant Instruction is to inform Commanding Officers
and Officers in Charge of shore units and independently moored vessels of the legally
mandated requirements for reducing air emissions from motor vehicles operated in their
geographic areas of responsibility.
2.
ACTION. Area, maintenance and logistics commands; district commanders; and
commanding officers of Headquarters units shall ensure compliance with the provisions of
this instruction.
3.
DIRECTIVES AFFECTED. None.
4.
DISCUSSION.
a.
The Environmental Protection Agency (EPA) has developed regulatory requirements
(references (a) and (b)) for an enhanced Inspection and Maintenance (I/M) Program for
vehicle emissions in serious, severe and extreme ozone and carbon monoxide (CO)
nonattainment areas that also meet certain population density criteria. The EPA has
delegated the authority for the administration and enforcement of this requirement to the
states. I/M programs are expected to be implemented by the states throughout ozone
nonattainment areas with a 1990
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