Science & Technology

Guidance Memo for Inspection and Maintenance

This memo to the EPA Regional Air Division Directors transmits the guidance document entitled, Considerations for State I/M Program Optimization.

Roadside Inspection Program in California

This report summarizes the key aspects of the Bureau of Automotive Repair s (BAR) Roadside Inspection Program.

System Documentation for Onroad Heavy-Duty Vehicles in the Engines and Vehicles Compliance Information System (EV-CIS)

Use these files for the commercial trucks and buses module in EV-CIS.

Full 1992 Inspection and Maintenance Regulations

This review summarizes the revision of Part 51 of Chapter I, Title 40 of the Code of Federal Regulations.

Analysis of a Remote Sensing Clean Screen Program in Arizona

This report analyzes the effectiveness of using remote sensing data to “clean screen” vehicles for exemption from their upcoming emissions inspection and maintenance (I/M) test.

1-Hour Ozone Maintenance Plans Containing Basic Inspection and Maintenance Programs

This memo provides clarification regarding anti-backsliding provisions.

October 1998 Draft Radian Report Updating Vehicle Profiling Credits

Remote Sensing - Summary of RSD Studies

Guidance Attachment for State Inspection and Maintenance Optimization

This document provides guidance for state's to use when designing or redesigning their I/M programs.

Acceleration Simulation Mode Test Revised Draft Test Procedure

This is a revised draft of the Acceleration Simulation Mode Test Procedures for use in Inspection and Maintenance programs.

Greenhouse Gas Calculations for Efficient Producers Also Producing Hand Sanitizer

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QAPP: Development of Emission Estimating Methodologies for Air Emissions from Animal Feeding Operations

Report describing plan to assure quality of data analysis for development of emission estimating methodologies for air emissions from animal feeding operations

U.S. - Mexico Border Information Center on Air Pollution (CICA)

The CICA provides resources for emerging and existing air pollution prevention and control technologies and provides public access to data and information on their use, effectiveness and cost.

Bão, Lũ Lụt Và Các Trường Hợp Khẩn Cấp Khác

Information in Vietnamese language about how to prepare for, and what to do during and after, hurricanes, floods, and other emergencies

Air Monitoring at Agricultural Operations

Information on EPA and USDA resources related to agricultural air monitoring, and agricultural impacts on air quality.

EPA to Hold Public Meeting Feb. 17 to Share Update on Southside Chattanooga Lead Superfund Site

Release Date: February 13, 2026