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On July 14, the Air District released draft amended rule language outlining potential exemptions and a delayed start date for the existing zero-NOx residential water heater requirement under Air District Rule 9-6. The Air District is publishing the draft language for public review and comment ahead of the Board of Director’s consideration for adoption this fall.

Learn about the Air District’s zero-NOx space and water heating rules.

Learn about the Air District’s external stakeholder Implementation Working Group, or IWG, for zero-NOx space and water heating rules.

The Air District and Contra Costa Health Services continue to work together to investigate the source of odors that fouled San Francisco and Richmond on December 28 and 29. The joint investigation has ruled out any sources on San Francisco Bay, including ships or oil spills on the water, and now centers on Chevron’s Richmond refinery and other potential sources in Richmond, such as the waste water treatment plant, waste management facility, and other industrial sources.

Golden Gate Zero Emission Marine announced today the beginning of construction of the Water-Go-Round, a first-of-its-kind hydrogen fuel-cell boat. Funding for the project comes from a $3 million grant to the Air District from the California Air Resources Board.

The Air District Board of Directors has adopted amendments to Regulation 9, Rules 4 and 6, to eliminate emissions of nitrogen oxides, or NOx, from residential and commercial natural gas furnaces and water heaters in the Bay Area by requiring new appliances to be zero-NOx. 

The San Francisco Bay Area Water Emergency Transportation Authority and the Air District announced that WETA’s Gemini Class Clean Air Conversion Project has been completed, resulting in a substantial decrease in air pollution emissions from four San Francisco Bay Ferry vessels serving Oakland, Alameda, and Richmond.

Today, the Bay Area Air Quality Management District announced that Value Plumbing Co., Inc., of Oakley, California, has agreed to pay $310,000 in a settlement filed with the Superior Court of the State of California in the County of Contra Costa for installing uncertified residential water heaters in the Bay Area.

The Air District will host a public learning session on Tuesday, October 22, virtually via Zoom, regarding adopted rules (“Building Appliance Rules”) impacting nitrogen oxide, or NOx, emissions from natural gas-fired water heating appliances. Members of the public are invited to attend, learn, and ask questions about these rules.

A partir del 1 de enero de 2011, la Regulación 9, Regla 7, requiere que determinadas calderas, calderas de vapor y calentadores de proceso se registren ante el Distrito y que cumplan los límites de emisiones establecidos en la regla.

Jul 14, 2026 ... FOR IMMEDIATE RELEASE: July 14, 2026 CONTACT: communications@baaqmd.gov Air District publishes draft changes to water heater rule that delay implementation and lower costs Draft ...

Feb 25, 2016 ... water 0.5% (O.8 Emr-ssíons 'Water MMTCO2e) Projected 2015 GHG Treatment J 37.9o/o Domestic Wastewater Treatment r I ndustriàl Wastewater 8.6% $É¡{eå 37.4% lndirect Emissions, Electricity ...

Aug 7, 2008 ... 5. BOILER, STEAM GENERATOR AND PROCESS HEATER TUNING PROCEDURE 5.1 Inspection Procedure for Boilers, Steam Generators and Process Heaters 5.1.1 Using a thermometer and probe with a ...

Jun 26, 2017 ... June 26, 2017 SUBMITTAL VIA EMAIL TO: gstone@baaqmd.gov Mr. Greg Stone Supervising Air Quality Engineer Bay Area Air Quality Management District 375 Beale Street, Suite 600 San Francisco, CA ...

Dec 15, 2022 ... December 16, 2022 Mr. Marcus Yee Department of Water Resources P.O. Box 942836 Sacramento, CA 94236-0001 RE: Draft Environmental Impact Report for the Delta Conveyance Project ...

Oct 21, 2024 ... Installation Costs for Zero-NOx Space and Water Heating Appliances Version 2.0 - Rate Updates Bay Area Air Quality Management District prepared for Energy + Environmental Economics (E3), ...

Apr 10, 2026 ... HEARING BOARD CALENDAR BAY AREA AIR QUALITY MANAGEMENT DISTRICT Date & Time: TUESDAY, MAY 19, 2026, at 9:30 a.m. st Location: Bay Area Metro Center, 375 Beale Street, 1 Floor Board Room, San ...

BAY AREA AIR QUALITY MANAGEMENT DISTRICT RESOLUTION No. 2023 - 03 A Resolution of the Board of Directors of the Bay Area Air Quality Management District Amending Regulation 9, Rule 4 (Nitrogen ...

Jun 21, 2023 ... BAY AREA AIR QUALITY MANAGEMENT DISTRICT RESOLUTION No. 2023 - 09 A Resolution of the Board of Directors of the Bay Area Air Quality Management District Directing Staff to Submit Regulation 9, ...