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Air Emissions Inventories

Air Emissions Inventory Guidance for Implementation of Ozone and Particulate Matter NAAQS and Regional Haze Regulations

This document provides guidance on how to develop emission inventories to meet State Implementation Plan (SIP) requirements for complying with the 8-hour ozone national ambient air quality standard (NAAQS), the revised particulate matter (PM) NAAQS, and the regional haze regulations. It is intended for use by the EPA Regional Offices; State, local and Tribal air quality management authorities; and the general public. The guidance is designed to implement national policy on these issues.

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