Colorado   

Governing Agency: 

Shared - Department of Revenue and Department of Health

Agency Website: 

www.aircarecolorado.com or www.mv.state.co.us/emissions.html

Primary Contact:

Garrison Kaufman

Mobile Source Program Manager

Secondary Contact:

Jim Kemper
Mobile Sources, Air Pollution Control
4300 Cherry Creek Drive South
Denver, Co 80222-1530
Phone: 303-364-5334
Fax: 303-782-5693
jim.kemper@state.co.us

CURRENT PROGRAM

 

Date Started: 

January 1995

EPA Designation: 

Enhanced

Program Type: 

Centralized for 1982 and newer vehicles in Denver and Boulder
Decentralized test only for pre-1982 vehicles

Program Areas: 

Metro Denver, Boulder and portions of Larimer and Weld counties (Fort Collins, Greeley and Loveland areas)

Enforcement Method: 

Registration denial

Model Years: 

All

Vehicle Types: 

LDGV, LDGT, HDGV

Exempt Vehicles: 

First 4 model years (unless change of ownership), motorcycles, “street rod,” farm plated, pre -1959 collector-plated, kit cars, pre-1942 horseless carriage-plated, two-stroke engine manufactured prior to 1980, electric powered, hybrid electric vehicles.

Test Type: 

I/M 240 for 1982 on, 2-Speed Idle for pre-1982 and HD vehicles greater than 8500 GVW. Roadside remote sensing (RSD) testing for qualifying vehicles to forgo the I/M 240 test under the “Clean Screen “ program

Non-OBD Testable: 

I/M 240 only (OBD is advisory only). 

Cut Points: 

I/M 240 cutpoints tightened in May 2008.  Cutpoints vary by model year and vehicle classification and are available upon request. 

OBD: 

Advisory only as of April 2003, however, emissions trouble codes are queried and downloaded for recording.

Max Not Ready Flags: 

N/A due to advisory status

Visual Checks 

O2 sensor, catalyst, air pump, gas cap, MIL operation. No visual check for emissions components on OBDII equipped vehicles 1996 and newer that pass MIL operation test

Evaporative System Test: 

Gas cap

Safety Test: 

No

Test Frequency: 

Biennial for 1982+, annual for pre-1982; ownership change (except for ‘new’ vehicle sales)

Annual Test Volume 

Basic:500,000
Enhanced: 900,000

# of Centralized Facilities: 

14

# of Centralized Lanes: 

75

Test Fee: 

I/M 240,    $25        Idle,    $25 max.

Re-test Procedures: 

Vehicle is retested until it passes.  In the enhanced area, a motorist can apply for a waiver after $715 in emissions related repairs have been made for 1968+.  In order to qualify for the labor cost to apply, the repair must have been performed by a registered repair facility.

Contracted Services: 

Envirotest. Contract extended through Dec 31, 2005 

Comments: 

Colorado ended its ‘Basic’ I/M program in the areas to the north and south of the Denver Metropolitan area in December 2006, after reaching attainment for carbon monoxide.  Shortly thereafter, Colorado was designated non-attainment for ozone, so an enhanced I/M program will commence in the northern Front Range counties of Larimer and Weld in July 2010.  The I/M restart will include the following metropolitan areas: Fort Collins, Greeley, Loveland, Estes Park, and the US Highway 85/Platte River corridor communities in southwest Weld County.  Although Colorado Springs (to the south of Denver) was part of the old Basic I/M Program, gasoline I/M will not restart in Colorado Springs.

Colorado operates a diesel I/M program for all light and heavy-duty diesels in the Front Range area, to include the Denver Metropolitan area,  the North Front Range area discussed above and Colorado Springs to the south of Denver.  Diesel I/M is an opacity test performed under full-load lugdown conditions.  Fleets of nine or more HD diesels may self inspect.