Regulation 9 Rule 6: Nitrogen Oxides Emissions from Natural Gas-Fired Water Heaters - 2021 Amendment (Under Development)

Learn about the Air District's rule amendment process seeking to reduce emissions of nitrogen oxides from residential and commercial water heaters in buildings in the Bay Area through changes to Regulation 9, Rule 6.

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 Rules 9-4: Nitrogen Oxides from Fan Type Residential Central Furnaces and 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.

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. To access the Zoom meeting, you can join via web browser or by phone. 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 NameExpected Hearing Datetable-mobile-only-column
Regulation 9, Rule 6Nitrogen Oxides Emissions from Natural Gas-Fired Water Heaters4th Quarter 2022
Regulation 9, Rule 6
Rule Name:
Nitrogen Oxides Emissions from Natural Gas-Fired Water Heaters
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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6/9/2022Scoping Meeting - EIR for Amendments to Rules 9-4 and 9-6CEQA Scoping Meeting Presentation - Rules 9-4 and 9-6
 
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:
Agenda:
CEQA Scoping Meeting Presentation - Rules 9-4 and 9-6
:
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

Event Description


Other Documents

N/A

Event Contact

  • Jennifer Elwell
  • Senior Air Quality Engineer, Community Engagement and Policy
  • 415.749.8732
4/18/2022Stationary Source & Climate Impacts CommitteeCommittee Agenda


Committee Agenda


Errata and Revised Agenda


Committee Presentations
 
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
Listen to streaming MP3
Agenda:
Committee Agenda


Committee Agenda


Errata and Revised Agenda


Committee Presentations
:
Other Documents:
Committee Minutes
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
Listen to streaming MP3

Event Description

N/A

Other Documents

Committee Minutes

Event Contact

N/A

11/15/2021Stationary Source & Climate Impacts CommitteeCommittee Agenda


Committee Presentations
 
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
Listen to streaming MP3
Agenda:
Committee Agenda


Committee Presentations
:
Other Documents:
Committee Minutes
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
Listen to streaming MP3

Event Description

N/A

Other Documents

Committee Minutes

Event Contact

N/A

10/18/2021Stationary Source & Climate Impacts CommitteeCommittee Agenda


Committee Presentations
 
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
Listen to streaming MP3
Agenda:
Committee Agenda


Committee Presentations
:
Other Documents:
Committee Minutes
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
Listen to streaming MP3

Event Description

N/A

Other Documents

Committee Minutes

Event Contact

N/A

10/7/2021Virtual 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


Presentation - Public Workshop on Draft Amendments for Building Appliance Rules 9-4 and 9-6
 
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:
:
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

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

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
Technical Support Documents 
CEQA Scoping Meeting Presentation - Rules 9-4 and 9-6
Type:
Technical Support Documents
Description:
N/A
:
 

Description

N/A

Request for Comments
Regulatory Documents 
Request for Comments
Type:
Regulatory Documents
Description:
N/A
:
 

Description

N/A

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
Regulatory Documents 
 

Description

N/A

CEQA Initial Study for the Proposed Amendments to Rules 9-4 and 9-6
Regulatory Documents 
Type:
Regulatory Documents
Description:
N/A
:
 

Description

N/A

Draft Amendments to Rule 9-4 (Revised)
Regulatory Documents 
Draft Amendments to Rule 9-4 (Revised)
Type:
Regulatory Documents
Description:
N/A
:
 

Description

N/A

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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Libby Schaaf et al
Organization 
Libby Schaaf et al
Type:
Organization
Description:
N/A
:
350 Bay Area et al
Organization 
350 Bay Area et al
Type:
Organization
Description:
N/A
:
Rebekah Collins
Individual 
Rebekah Collins
Type:
Individual
Description:
N/A
:
Building Decarbonization Coalition et al
Organization 
Building Decarbonization Coalition et al
Type:
Organization
Description:
N/A
:
Tom Kabat
Individual 
Tom Kabat
Type:
Individual
Description:
N/A
:

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Last Updated: 6/13/2022