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Rules 9-4 and 9-6 Building Appliances

Learn about the Air District's process for amending Regulation 9, Rules 4 and 6 to reduce emissions of nitrogen oxides from residential and commercial furnaces and water heaters in buildings in the Bay Area.

Find out about the status and anticipated timeline of the rule development process. Information on hearings, workshops, and other events is provided below, along with supporting documents and materials.

Air District staff is currently evaluating potential amendments to two rules: Rule 9-4: Nitrogen Oxides from Fan Type Residential Central Furnaces and Rule 9-6: Nitrogen Oxides Emissions from Natural Gas-Fired Boilers and Water Heaters. These rules govern point of sale emission standards for small, typically residential and commercial, water and space heating systems. Emissions of nitrogen oxides impact local and regional air quality and contribute to the formation of ozone and secondary particulate matter.

The Air District hosted a public workshop on October 7, 2021 to discuss initial outcomes from the Building Appliance Stakeholder Working Group and first draft language of regulatory amendments. Recordings of the public workshop and subsequent updates to the Stationary Source and Climate Impacts Committee, as well as supporting documents, can be found under the 'Hearings, Workshops and Other Events' and 'Documents' sections below.

In May of 2022, the Air District released a Notice of Preparation (NOP) of an Environmental Impact Report (EIR) and an Initial Study, as well as revised draft rule amendments. Note that the amendments to Rule 9-4 include updates to clarify definitions and applicability, while the amendments to Rule 9-6 are the same as the version previously released.

Request for Comments(384 Kb PDF, 2 pgs, posted 05/19/22)
Notice of Preparation of an Environmental Impact Report and Notice of Public Scoping Meeting for the Proposed Amendments to Rules 9-4 and 9-6(375 Kb PDF, 6 pgs, posted 05/19/22)
Initial Study for the Proposed Amendments to Rules 9-4 and 9-6(1 Mb PDF, 74 pgs, posted 05/19/22)
Draft Amendments to Rule 9-4 (May 2022)(643 Kb PDF, 4 pgs, posted 05/19/22)
Draft Amendments to Rule 9-6 (May 2022)(434 Kb PDF, 6 pgs, posted 05/19/22)

Staff will conduct a public scoping meeting to inform the public about the project and to provide agencies and the public with an opportunity to provide comments on the scope and content of the EIR. The public scoping meeting will be held virtually on June 9th, 2022, from 6:00-8:00 PM. Find the link and other information on how to join in the 'Hearings, Workshops and Other Events' table below.

Written and/or email comments on the Initial Study and revised draft amendments must be received by 5:00 PM on June 21, 2022 and may be submitted to:

Jennifer Elwell
Bay Area Air Quality Management District
375 Beale Street, Suite 600
San Francisco, CA 94105

Or by email to

	Rule #	Rule Name	Expected Hearing Date	table-mobile-only-column
	Regulation 9, Rule 4	Nitrogen Oxides from Fan Type Residential Central Furnaces 2021 Amendment (Under Development)	4th Quarter 2022	Regulation 9, Rule 4 Rule Name: Nitrogen Oxides from Fan Type Residential Central Furnaces 2021 Amendment (Under Development) Expected Hearing Date: 4th Quarter 2022 Rule Status: Under Amendment Air District Staff Contact: Jennifer Elwell Senior Air Quality Engineer, Community Engagement and Policy 415.749.8732 Comments Due: 6/21/2022 Description: This rule limits emissions of nitrogen oxides from natural gas-fired fan type residential central furnaces.
	Comments Due 6/21/2022 Rule Status Under Amendment Air District Staff Contact Jennifer Elwell Senior Air Quality Engineer, Community Engagement and Policy 415.749.8732 Description This rule limits emissions of nitrogen oxides from natural gas-fired fan type residential central furnaces.

	Rule #	Rule Name	Expected Hearing Date	table-mobile-only-column
	Regulation 9, Rule 6	Nitrogen Oxides Emissions from Natural Gas-Fired Water Heaters 2021 Amendment (Under Development)	4th Quarter 2022	Regulation 9, Rule 6 Rule Name: Nitrogen Oxides Emissions from Natural Gas-Fired Water Heaters 2021 Amendment (Under Development) Expected Hearing Date: 4th Quarter 2022 Rule Status: Under Amendment Air District Staff Contact: Jennifer Elwell Senior Air Quality Engineer, Community Engagement and Policy 415.749.8732 Comments Due: 6/21/2022 Description: This rule limits the emissions of nitrogen oxides from natural gas-fired water heaters and boilers.
	Comments Due 6/21/2022 Rule Status Under Amendment Air District Staff Contact Jennifer Elwell Senior Air Quality Engineer, Community Engagement and Policy 415.749.8732 Description This rule limits the emissions of nitrogen oxides from natural gas-fired water heaters and boilers.

Hearings, Workshops and Other Events

Throughout the rule development process, we provide information on upcoming and past workshops, hearings, and other events.

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Date	Event	Agenda	table-mobile-only-column
6/9/2022	Scoping Meeting - EIR for Amendments to Rules 9-4 and 9-6	CEQA Scoping Meeting Presentation - Rules 9-4 and 9-6 (443 Kb PDF, 30 pgs, revised 6/13/2022)	6/9/2022 Event: Scoping Meeting - EIR for Amendments to Rules 9-4 and 9-6 Date & Time: Thursday, June 9 6:00 PM - 8:00 PM add to your calendar View Full Calendar Status: Scheduled Location: N/A Watch/Listen: Watch/Listen Watch Archive Learn more Agenda: CEQA Scoping Meeting Presentation - Rules 9-4 and 9-6 (443 Kb PDF, 30 pgs, revised 6/13/2022) : Other Documents: N/A Event Contact: Jennifer Elwell Senior Air Quality Engineer, Community Engagement and Policy 415.749.8732 Event Description:
Date & Time Thursday, June 9 6:00 PM - 8:00 PM add to your calendar View Full Calendar Status Scheduled Location N/A Watch/Listen Watch/Listen Watch Archive Learn more Event Description Other Documents N/A Event Contact Jennifer Elwell Senior Air Quality Engineer, Community Engagement and Policy 415.749.8732
4/18/2022	Stationary Source & Climate Impacts Committee	Committee Agenda (236 Kb PDF, 17 pgs, posted 4/14/2022) Committee Agenda (Indexed Web Page Version) Errata and Revised Agenda (64 Kb PDF, 5 pgs, posted 4/15/2022) Committee Presentations (705 Kb PDF, 29 pgs, posted 4/14/2022)	4/18/2022 Event: Stationary Source & Climate Impacts Committee Date & Time: Monday, April 18 9:00 AM - 5:00 PM add to your calendar View Full Calendar Status: Scheduled Location: Web Stream Only Watch/Listen: Watch/Listen Watch video with closed captioning and agenda Watch Archive Listen to streaming MP3 Play Audio Learn more Agenda: Committee Agenda (236 Kb PDF, 17 pgs, posted 4/14/2022) Committee Agenda (Indexed Web Page Version) Errata and Revised Agenda (64 Kb PDF, 5 pgs, posted 4/15/2022) Committee Presentations (705 Kb PDF, 29 pgs, posted 4/14/2022) : Other Documents: Committee Minutes (84 Kb PDF, 4 pgs, revised 6/21/2022) Event Contact: N/A Event Description: N/A
Date & Time Monday, April 18 9:00 AM - 5:00 PM add to your calendar View Full Calendar Status Scheduled Location Web Stream Only Watch/Listen Watch/Listen Watch video with closed captioning and agenda Watch Archive Listen to streaming MP3 Play Audio Learn more Event Description N/A Other Documents Committee Minutes (84 Kb PDF, 4 pgs, revised 6/21/2022) Event Contact N/A
11/15/2021	Stationary Source & Climate Impacts Committee	Committee Agenda (334 Kb PDF, 19 pgs, posted 11/10/2021) Committee Presentations (187 Kb PDF, 22 pgs, posted 11/10/2021)	11/15/2021 Event: Stationary Source & Climate Impacts Committee Date & Time: Monday, November 15 9:00 AM - 5:00 PM add to your calendar View Full Calendar Status: Scheduled Location: Web Stream Only Watch/Listen: Watch/Listen Watch video with closed captioning and agenda Watch Archive Listen to streaming MP3 Play Audio Learn more Agenda: Committee Agenda (334 Kb PDF, 19 pgs, posted 11/10/2021) Committee Presentations (187 Kb PDF, 22 pgs, posted 11/10/2021) : Other Documents: Committee Minutes (30 Kb PDF, 4 pgs, revised 12/28/2021) Event Contact: N/A Event Description: N/A
Date & Time Monday, November 15 9:00 AM - 5:00 PM add to your calendar View Full Calendar Status Scheduled Location Web Stream Only Watch/Listen Watch/Listen Watch video with closed captioning and agenda Watch Archive Listen to streaming MP3 Play Audio Learn more Event Description N/A Other Documents Committee Minutes (30 Kb PDF, 4 pgs, revised 12/28/2021) Event Contact N/A
10/18/2021	Stationary Source & Climate Impacts Committee	Committee Agenda (251 Kb PDF, 16 pgs, posted 10/13/2021) Committee Presentations (317 Kb PDF, 33 pgs, posted 10/13/2021)	10/18/2021 Event: Stationary Source & Climate Impacts Committee Date & Time: Monday, October 18 9:00 AM - 5:00 PM add to your calendar View Full Calendar Status: Scheduled Location: Web Stream Only Watch/Listen: Watch/Listen Watch video with closed captioning and agenda Watch Archive Listen to streaming MP3 Play Audio Learn more Agenda: Committee Agenda (251 Kb PDF, 16 pgs, posted 10/13/2021) Committee Presentations (317 Kb PDF, 33 pgs, posted 10/13/2021) : Other Documents: Committee Minutes (74 Kb PDF, 4 pgs, revised 11/17/2021) Event Contact: N/A Event Description: N/A
Date & Time Monday, October 18 9:00 AM - 5:00 PM add to your calendar View Full Calendar Status Scheduled Location Web Stream Only Watch/Listen Watch/Listen Watch video with closed captioning and agenda Watch Archive Listen to streaming MP3 Play Audio Learn more Event Description N/A Other Documents Committee Minutes (74 Kb PDF, 4 pgs, revised 11/17/2021) Event Contact N/A
10/7/2021	Virtual Public Workshop on Draft Amendments to Regulation 9, Rules 4 and 6 (Building Appliances)	Agenda - Public Workshop on Draft Amendments for Building Appliance Rules 9-4 and 9-6 (133 Kb PDF, 1 pg, posted 10/7/2021) Presentation - Public Workshop on Draft Amendments for Building Appliance Rules 9-4 and 9-6 (621 Kb PDF, 35 pgs, posted 10/7/2021)	10/7/2021 Event: Virtual Public Workshop on Draft Amendments to Regulation 9, Rules 4 and 6 (Building Appliances) Date & Time: Thursday, October 7 6:00 PM - 8:00 PM add to your calendar View Full Calendar Status: Scheduled Location: Web Stream Only Watch/Listen: Watch/Listen Watch Archive Learn more Agenda: Agenda - Public Workshop on Draft Amendments for Building Appliance Rules 9-4 and 9-6 (133 Kb PDF, 1 pg, posted 10/7/2021) Presentation - Public Workshop on Draft Amendments for Building Appliance Rules 9-4 and 9-6 (621 Kb PDF, 35 pgs, posted 10/7/2021) : Other Documents: N/A Event Contact: Jennifer Elwell Senior Air Quality Engineer, Community Engagement and Policy 415.749.8732 Event Description: Air District staff will present draft amendments to Rule 9-4 and Rule 9-6 that are intended to decrease emissions of nitrogen oxides (NOX) from building appliances. The workshop will serve as a forum for workshop participants to provide feedback and comments on the draft rule amendments and workshop report.
Date & Time Thursday, October 7 6:00 PM - 8:00 PM add to your calendar View Full Calendar Status Scheduled Location Web Stream Only Watch/Listen Watch/Listen Watch Archive Learn more Event Description Air District staff will present draft amendments to Rule 9-4 and Rule 9-6 that are intended to decrease emissions of nitrogen oxides (NOX) from building appliances. The workshop will serve as a forum for workshop participants to provide feedback and comments on the draft rule amendments and workshop report. Other Documents N/A Event Contact Jennifer Elwell Senior Air Quality Engineer, Community Engagement and Policy 415.749.8732
4/19/2021	Stationary Source & Climate Impacts Committee Meeting	Committee Agenda (217 Kb PDF, 20 pgs, posted 4/14/2021) Committee Presentations (1 Mb PDF, 50 pgs, posted 4/15/2021)	4/19/2021 Event: Stationary Source & Climate Impacts Committee Meeting Date & Time: Monday, April 19 9:00 AM - 5:00 PM add to your calendar View Full Calendar Status: Scheduled Location: Web Stream Only Watch/Listen: Watch/Listen Watch video with closed captioning and agenda Watch Archive Listen to streaming MP3 Play Audio Learn more Agenda: Committee Agenda (217 Kb PDF, 20 pgs, posted 4/14/2021) Committee Presentations (1 Mb PDF, 50 pgs, posted 4/15/2021) : Other Documents: Committee Minutes (183 Kb PDF, 4 pgs, revised 5/18/2021) Event Contact: N/A Event Description: N/A
Date & Time Monday, April 19 9:00 AM - 5:00 PM add to your calendar View Full Calendar Status Scheduled Location Web Stream Only Watch/Listen Watch/Listen Watch video with closed captioning and agenda Watch Archive Listen to streaming MP3 Play Audio Learn more Event Description N/A Other Documents Committee Minutes (183 Kb PDF, 4 pgs, revised 5/18/2021) Event Contact N/A
11/19/2020	Climate Protection Committee Meeting	Committee Agenda (179 Kb PDF, 15 pgs, posted 11/16/2020) Committee Presentations (1 Mb PDF, 40 pgs, posted 11/18/2020)	11/19/2020 Event: Climate Protection Committee Meeting Date & Time: Thursday, November 19 9:30 AM - 5:00 PM add to your calendar View Full Calendar Status: Scheduled Location: Web Stream Only Watch/Listen: Watch/Listen Watch video with closed captioning and agenda Watch Archive Listen to streaming MP3 Play Audio Learn more Agenda: Committee Agenda (179 Kb PDF, 15 pgs, posted 11/16/2020) Committee Presentations (1 Mb PDF, 40 pgs, posted 11/18/2020) : Other Documents: Committee Minutes (158 Kb PDF, 4 pgs, revised 3/2/2021) Event Contact: N/A Event Description: N/A
Date & Time Thursday, November 19 9:30 AM - 5:00 PM add to your calendar View Full Calendar Status Scheduled Location Web Stream Only Watch/Listen Watch/Listen Watch video with closed captioning and agenda Watch Archive Listen to streaming MP3 Play Audio Learn more Event Description N/A Other Documents Committee Minutes (158 Kb PDF, 4 pgs, revised 3/2/2021) Event Contact N/A

Documents

Supporting materials, such as staff reports, regulatory language, and other technical documents related to rule development, are posted throughout the development process.

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CEQA Scoping Meeting Presentation - Rules 9-4 and 9-6
(443 Kb PDF, 30 pgs, revised 6/13/2022)

Technical Support Documents

CEQA Scoping Meeting Presentation - Rules 9-4 and 9-6
(443 Kb PDF, 30 pgs, revised 6/13/2022)

Type:

Technical Support Documents

Request for Comments
(384 Kb PDF, 2 pgs, posted 5/19/2022)

Regulatory Documents

Request for Comments
(384 Kb PDF, 2 pgs, posted 5/19/2022)

Type:

Regulatory Documents

Notice of Preparation of an Environmental Impact Report and Notice of Public Scoping Meeting for the Proposed Amendments to Rules 9-4 and 9-6
(375 Kb PDF, 6 pgs, posted 5/19/2022)

Regulatory Documents

Notice of Preparation of an Environmental Impact Report and Notice of Public Scoping Meeting for the Proposed Amendments to Rules 9-4 and 9-6
(375 Kb PDF, 6 pgs, posted 5/19/2022)

Type:

Regulatory Documents

CEQA Initial Study for the Proposed Amendments to Rules 9-4 and 9-6
(1 Mb PDF, 74 pgs, posted 5/19/2022)

Regulatory Documents

CEQA Initial Study for the Proposed Amendments to Rules 9-4 and 9-6
(1 Mb PDF, 74 pgs, posted 5/19/2022)

Type:

Regulatory Documents

Draft Amendments to Rule 9-4 (Revised)
(643 Kb PDF, 4 pgs, posted 5/19/2022)

Regulatory Documents

Draft Amendments to Rule 9-4 (Revised)
(643 Kb PDF, 4 pgs, posted 5/19/2022)

Type:

Regulatory Documents

Comments

The Air District provides opportunities for the public to submit comments throughout the development process, and posts comments received during the open public comment periods.

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Comments Document	Type	table-mobile-only-column
350 Bay Area et al (3 Mb PDF, 7 pgs, posted 3/4/2022)	Organization	350 Bay Area et al (3 Mb PDF, 7 pgs, posted 3/4/2022) Type: Organization :
Libby Schaaf et al (59 Kb PDF, 3 pgs, posted 3/4/2022)	Individual	Libby Schaaf et al (59 Kb PDF, 3 pgs, posted 3/4/2022) Type: Individual :
Rebekah Collins (939 Kb PDF, 1 pg, revised 11/12/2021)	Individual	Rebekah Collins (939 Kb PDF, 1 pg, revised 11/12/2021) Type: Individual :
Building Decarbonization Coalition et al (2 Mb PDF, 9 pgs, revised 11/12/2021)	Organization	Building Decarbonization Coalition et al (2 Mb PDF, 9 pgs, revised 11/12/2021) Type: Organization :
Plumbing Heating Cooling Contractors Association (257 Kb PDF, 2 pgs, revised 11/12/2021)	Organization	Plumbing Heating Cooling Contractors Association (257 Kb PDF, 2 pgs, revised 11/12/2021) Type: Organization :
RF McDonald Co (189 Kb PDF, 3 pgs, revised 11/12/2021)	Organization	RF McDonald Co (189 Kb PDF, 3 pgs, revised 11/12/2021) Type: Organization :
Rheem (191 Kb PDF, 4 pgs, revised 11/12/2021)	Organization	Rheem (191 Kb PDF, 4 pgs, revised 11/12/2021) Type: Organization :
Stop Waste (179 Kb PDF, 2 pgs, revised 11/12/2021)	Organization	Stop Waste (179 Kb PDF, 2 pgs, revised 11/12/2021) Type: Organization :
Tom Kabat (150 Kb PDF, 3 pgs, revised 11/12/2021)	Individual	Tom Kabat (150 Kb PDF, 3 pgs, revised 11/12/2021) Type: Individual :
Josie Gaillard (627 Kb PDF, 2 pgs, revised 11/12/2021)	Individual	Josie Gaillard (627 Kb PDF, 2 pgs, revised 11/12/2021) Type: Individual :
Richard Gray (449 Kb PDF, 1 pg, revised 11/12/2021)	Individual	Richard Gray (449 Kb PDF, 1 pg, revised 11/12/2021) Type: Individual :
Chris Guslani (440 Kb PDF, 1 pg, revised 11/12/2021)	Individual	Chris Guslani (440 Kb PDF, 1 pg, revised 11/12/2021) Type: Individual :
Tom Alkire (791 Kb PDF, 2 pgs, revised 11/12/2021)	Individual	Tom Alkire (791 Kb PDF, 2 pgs, revised 11/12/2021) Type: Individual :
Rob Jacobs (652 Kb PDF, 1 pg, revised 11/12/2021)	Individual	Rob Jacobs (652 Kb PDF, 1 pg, revised 11/12/2021) Type: Individual :
East Bay Community Energy (219 Kb PDF, 5 pgs, revised 11/12/2021)	Organization	East Bay Community Energy (219 Kb PDF, 5 pgs, revised 11/12/2021) Type: Organization :
Anthony Achermann (469 Kb PDF, 2 pgs, revised 11/12/2021)	Individual	Anthony Achermann (469 Kb PDF, 2 pgs, revised 11/12/2021) Type: Individual :
Air Conditioning Heating and Refrigeration Institute (260 Kb PDF, 9 pgs, revised 11/12/2021)	Organization	Air Conditioning Heating and Refrigeration Institute (260 Kb PDF, 9 pgs, revised 11/12/2021) Type: Organization :
Bradford White (222 Kb PDF, 4 pgs, revised 11/12/2021)	Individual	Bradford White (222 Kb PDF, 4 pgs, revised 11/12/2021) Type: Individual :
Bruce Naegel (680 Kb PDF, 2 pgs, revised 11/12/2021)	Individual	Bruce Naegel (680 Kb PDF, 2 pgs, revised 11/12/2021) Type: Individual :
Carrier (155 Kb PDF, 2 pgs, revised 11/12/2021)	Organization	Carrier (155 Kb PDF, 2 pgs, revised 11/12/2021) Type: Organization :
Dan Bonetti (879 Kb PDF, 2 pgs, revised 11/12/2021)	Individual	Dan Bonetti (879 Kb PDF, 2 pgs, revised 11/12/2021) Type: Individual :
David Moller (765 Kb PDF, 2 pgs, revised 11/12/2021)	Individual	David Moller (765 Kb PDF, 2 pgs, revised 11/12/2021) Type: Individual :
Goodman (166 Kb PDF, 3 pgs, revised 11/12/2021)	Individual	Goodman (166 Kb PDF, 3 pgs, revised 11/12/2021) Type: Individual :
Lawrence Livermore National Laboratory (654 Kb PDF, 1 pg, revised 11/12/2021)	Organization	Lawrence Livermore National Laboratory (654 Kb PDF, 1 pg, revised 11/12/2021) Type: Organization :
Navien (125 Kb PDF, 1 pg, revised 11/12/2021)	Organization	Navien (125 Kb PDF, 1 pg, revised 11/12/2021) Type: Organization :
PG&E (178 Kb PDF, 3 pgs, revised 11/12/2021)	Organization	PG&E (178 Kb PDF, 3 pgs, revised 11/12/2021) Type: Organization :

Air District Operations

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Rules 9-4 and 9-6 Building Appliances

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