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Upcoming Events

Oct 24 2026 - 09:00

District Issues Air Quality Permits for Cogeneration Equipment at the U.S. Capitol Power Plant

Date Released: 

The District Department of the Environment (DDOE), effective today, issued four air quality permits to the Architect of the Capitol (AOC).  The permits allow the construction of cogeneration equipment and limit allowable plantwide emissions at the U.S. Capitol Power Plant (CPP) for the first time in its history.  It also clears the way for AOC to cease burning coal after the cogeneration plant is commissioned and operational.

Public Session to Respond to Questions on Revised Stormwater Management Regulations and Guidebook



Public Session to Respond to Clarifying Questions on DDOE’s Revised Stormwater Management Regulations and Guidebook

This public session is an opportunity for interested stakeholders to ask questions to clarify details of the revised Rulemaking on Stormwater Management and Soil Erosion and Sediment Control and the revised Stormwater Management Guidebook.

The meeting will be held at DDOE Headquarters, 1200 First Street NE. Please come to the 5th floor reception area and you will be escorted to the meeting room.

Public Training Session on Revised Stormwater Management Regulations



Public Training Session on DDOE’s Revised Stormwater Management Regulations: Projects in the Public-Right-of Way

This public training session is an opportunity for interested stakeholders to learn and provide feedback on how the revised Rulemaking on Stormwater Management and Soil Erosion and Sediment Control and revised Stormwater Management Guidebook will apply to parcel-based projects with public right-of-way disturbance.

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