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• Overview of Methodology for Tier 0 In-Use Deterioration and Key Issues for Comment (PDF) (12 pp, 294 K, EPA420-P-99-016, March 1999)
• The Determination of Hot Running Emissions from FTP Bag Emissions (PDF) (18 pp, 67 K, EPA420-P-99-014, March 1999)
• Determination of Start Emissions as a Function of Mileage and Soak Time for 1981-1993 Model Year Light-Duty Vehicles (PDF) (24 pp, 74 K, EPA420-P-99-015, March 1999)
• Determination of Running Emissions as a Function of Mileage for 1981-1993 Model Year Light-Duty Cars and Trucks (PDF) (30 pp, 3.24 MB, EPA420-P-99-010, March 1999)
• Analysis of Emissions Deterioration Using Ohio and Wisconsin IM240 Data (PDF) (18 pp, 80 K, EPA420-P-99-013, March 1999)
• Summary of Peer Review Comments on the Draft Tier 0 In-Use Deterioration Papers (PDF) (11 pp, 32 K, March 22, 1999)
• Individual Peer Review Comments on the Draft Tier 0 In-Use Deterioration Papers
  • Mr. Kevin Green (PDF) (3 pp, 15 K, December 22, 1998)
  • Dr. Stephen L. Gerritson (PDF) (10 pp, 27 K, December 29, 1998)
  • Dr. Larry Caretto (PDF) (34 pp, 106 K, December 14, 1998)
• MOBILE6 Inspection / Maintenance Benefits Methodology for 1981 through 1993 Model Year Light Vehicles (PDF) (132 pp, 740 K, EPA420-P-99-007, March 1999)
• Determination of NOx and HC Basic Emission Rates, OBD and I/M Effects for Tier 1 and Later LDVs and LDTs (PDF) (44 pp, 198 K. EPA420-P-99-009, March 1999)
  • or [100K XLS] and [130K XLS]
• Determination of CO Basic Emission Rates, OBD and I/M Effects for Tier 1 and Later LDVs and LDTs (PDF) (34 pp, 147 K, EPA420-P-99-017, May 1999)
• Comparison of MOBILE6 Basic Emission Rates for 1981-1993 Model Year Light-Duty Cars and Trucks with FTP and IM240 Data
  • Body of report only (PDF) (11 pp, 53 K)
  • Full Report including all graphs (PDF) (57 pp, 2.6 MB, EPA420-P-99-021, May 1999)