Documents

Washington DC-MD-VA 2015 Ozone NAAQS Nonattainment Area Base Year 2017 Emissions Inventory (Updated May 28, 2020)

This document contains a detailed explanation of the base year 2017 emissions inventory for point, nonpoint (area), nonroad, and onroad anthropogenic sources as well as biogenic sources in the Washington, DC-MD-VA 2015 ozone National Ambient Air Quality Standards (NAAQS) marginal nonattainment area. (Posted for the second round of public hearing & comment processes for the District of Columbia and the Commonwealth of Virginia)

Air Quality Conformity Analysis of the 2020 Amendment to Visualize 2045: Full Report

This report documents the air quality conformity analysis of the 2020 amendment to the Visualize 2045 long-range transportation plan and FY2021-2024 Transportation Improvement Program (TIP). The analysis is carried out under the regulations contained in the Environmental Protection Agency's final rule, published in the November 24, 1993 Federal Register, with subsequent amendments and additional federal guidance published by the Environmental Protection Agency (EPA), the Federal Highway Administration (FHWA), and the Federal Transit Administration (FTA). The process involved consultation with

Washington DC-MD-VA 2015 Ozone NAAQS Nonattainment Area Base Year 2017 Emissions Inventory (Initial Inventory dated January 24, 2020)

This document contains a detailed explanation of the base year 2017 emissions inventory for point, nonpoint (area), nonroad, and onroad anthropogenic sources as well as biogenic sources in the Washington, DC-MD-VA 2015 ozone National Ambient Air Quality Standards (NAAQS) marginal nonattainment area. (Posted for public hearing & comment purposes for Maryland)

Regional Air Quality Update

Short report of trends and data on ground-level ozone pollution prepared for the Metropolitan Washington Air Quality Committee.

Potomac River Water Quality in Metropolitan Washington

What Our Region Grows

This report provides a ‘snapshot’ of the state of the region’s agriculture, as well as the general food production and demand, and economic contributions.

Visualize 2045 Air Quality Conformity Analysis

This report documents the air quality conformity analysis of the financially constrained element of the Visualize 2045 long-range transportation plan and FY2019-2024 Transportation Improvement Program (TIP). The analysis is carried out under the regulations contained in the Environmental Protection Agency's final rule, published in the November 24, 1993 Federal Register, with subsequent amendments and additional federal guidance published by the Environmental Protection Agency (EPA), the Federal Highway Administration (FHWA), and the Federal Transit Administration (FTA). The process involved

What We Can Do to Improve Air Quality in the Metropolitan Washington Region

A menu of options to help achieve no unhealthy air days in the region compiled by COG staff for the Metropolitan Washington Air Quality Committee and the Air and Climate Public Advisory Committee.

Tree Canopy Management Strategy

The purpose of the Regional Tree Canopy Management Strategy is to provide COG members with a framework of policies and recommendations that can be used to address challenges and threats to urban forests and to maximize its capacity to deliver benefits and services to our communities, while minimizing associated risks.

Chain Bridge Data Analysis Report

This report compares the long term loads and load trends estimated by WRTDS with those estimated by the dense sampling-based direct method that OWML uses.