5 Colo. Code Regs. § 1001-15-A-III
Fleets which meet the applicability criteria of this Regulation Number 12 are required to participate in the Diesel Fleet Self Certification Program, Part A of this Regulation Number 12 (DFSCP), and such fleets bear the responsibility of contacting and notifying the Division of their fleet status and intent to participate in the DFSCP. Affected fleets shall complete and submit a Compliance Plan and a vehicle inventory to the Division for approval within 30 days of initial contact with the Division.
The Division shall review and evaluate each Compliance Plan (and exemplary maintenance plan, if submitted) filed with it within thirty (30) days of its receipt by the Division. Upon approval of a Compliance Plan (and exemplary maintenance plan, if submitted), the Division shall return an approved copy of the plan to the Fleet who shall post the plan in a conspicuous place in the business location. If a Compliance Plan (or exemplary maintenance plan, if submitted) as filed is disapproved by the Division, the Division shall issue a letter of disapproval, and the Fleet shall have thirty (30) days within which to revise the plan and resubmit it to the Division. The Division shall have thirty (30) days to approve or disapprove the resubmitted plan.
Colorado, and local governments within the Program area, subject to the provisions of Part A of this regulation shall be inspected once every other year, (for vehicles ten years old, and newer), or every year (for vehicles greater than ten years old), and shall comply with the inspection provisions and obtain a Certification of Emissions Control. Inspection results will be reported to the Department of Revenue by submission of the Certification of Emissions Control not later than December 31, of each year.
5 CCR 1001-15-A-III