EPA Regulations

Amendments to Vehicle Inspection Maintenance Program Requirements to Address the 8-Hour National Ambient Air Quality Standard for Ozone
Media advisory
EPA Proposes Revisions to Vehicle Inspection Maintenance Program Requirements (December 22, 2004)
Proposed Rule
Proposed Rule
[147K PDF]
Fact Sheet
(EPA420-F-00-059, December, 2004)
Fact Sheet
(EPA420-F-00-059, December, 2004) [21K PDF]
Amendments to Vehicle Inspection Maintenance Program Requirements Incorporating the On-Board Diagnostic Check
Final Rule
As published in the Federal Register April 5, 2001
Final Rule
As published in the Federal Register April 5, 2001 [203K PDF]
Proposed Rule
As published in the Federal Register September 20, 2000
Additional Flexibility Amendments to Vehicle Inspection Maintenance Program Requirements
Final Rule
As published in the Federal Register July 24, 2000
Proposed Amendment Fact Sheet
(EPA420-F-99-030, August 1999 [12K PDF]
Proposed Rule
As published in the Federal Register August 20, 1999
Proposed Rule
As published in the Federal Register August 20, 1999 [126K PDF]
I/M Program Requirement – On-Board Diagnostic Checks Amendment to the Final Rule
Final Rule Fact Sheet
(EPA420-F-98-017, April 1998) [13K PDF]
Preamble & Regulatory Language
[50K PDF]
Proposed Rule Fact Sheet
(EPA420-F-98-002, January 1998) [11K PDF]
Proposed Rule Fact Sheet
(EPA420-F-98-002, January 1998) [6K TXT]
Proposed Rule
As published in the Federal Register, December 1997
Minor Amendments to Inspection Maintenance Program Evaluation Requirements; Amendment to the Final Rule
Final Rule Fact Sheet
(EPA420-F-97-052, August 1997) [10K PDF]
Final Rule
As published in the Federal Register, January 1998
Proposed Rule
As published in the Federal Register, September 1997 [30K]
I/M Program Requirements Minor Amendments
Direct Final Rule
September 23, 1996
Proposed Rule
September 23, 1996
I/M Requirement for On-Board Diagnostic Checks
Final Rule
August 27, 1996, Correction of August 6, 1996
Final Rule
August 6, 1996
Proposed Rule
August 18, 1995
Inspection/Maintenance Ozone Transport Region (OTR) Flexibility Amendments
Final Rule
As published in the Federal Register on July 25, 1996
Final Rule
As published in the Federal Register on July 25, 1996 [44K PDF]
Proposed Rule
As published in the Federal Register October 23, 1995
I/M regulations and guidance documents
Full List
[7K TXT]
I/M Flexibility
Final Rule
As published in the Federal Register on September 18, 1995
Proposed Rule
As published in the Federal Register on April 28, 1995
Guidance on Interim Approval of I/M Plans
I/M Guide
December 12, 1995 [17K ZIP WPD]
I/M Guide
December 12, 1995 [34K PDF]
I/M Redesignation
Final Rule
As published in the Federal Register on January 5, 1995
Proposed Rule
As published in the Federal Register on June 28, 1994
I/M Regulations
Full 1992 I/M Regulations
[226K PDF]
I/M Tech Support Documents
1992 Enhanced I/M Tech Support Document
No Appendices [340K PDF]