Rule 222 Filing Program

Rule 222 (Filing Requirements for Specific Emission Sources Not Requiring a Written Permit Pursuant to Regulation II) was adopted in September of 1998 as a streamlined alternative to permitting

Rule 222 (PDF) identifies specific types of equipment that typically have a low emission impact.  Owners and operators of equipment listed below are required to comply with the Rule 222 Filing Program.  This rule  requires owners/operators of specified emission sources to submit information regarding the source, including but not limited to a description of the source, data necessary to estimate emissions from the source, and information to determine whether the equipment is operating in compliance with applicable District, state, and Federal rules and regulations.


South Coast AQMD is introducing Online Filing for the most frequently used Registration Forms. You can now complete your application, pay the registration fee, and file your registration online for Negative Air Machines (Form 222-A), Boilers/Water Heaters and Process Heaters (Form 222-B), Charbroilers (Form 222-C), Industrial Cooling Towers (Form 222-CT), Power Pressure Washers (Form 222-PW), Tar Pots/Tar Kettles (Form 222-TP), Food Ovens (Form 222-FO), Storage of Odorants (Form 222-OS), Urea Storage (Form 222-U), Portable Diesel Heaters (Form 222-PH), Diesel Fueled Boilers (Form 222-DB), Asphalt Day Tanker (Form 222-AT) Asphalt Pavement Heater (Form 222-AH), and Micro-turbines (Form 222-MT).

Benefits of the Online Registration Filing Program (available for Forms 222-A, 222-B, 222-C, 222-CT, 222-PW, 222-TP, 222-FO, 222-OS, 222-U, 222-PH, 222-DB, 222-AT, 222-AH, and 222-MT):  

  • The online application process should take around 20 minutes to complete and obtain a Registration via email. 

  • An approved registration, along with confirmation of filing and payment, are sent directly via email for printing and safekeeping. 

  • Online users that are responsible for multiple locations can manage them all the program.

  • Online registration for the remaining 222 Forms are planned for future release.  

PLEASE NOTE:  Change of Operator registration applications are not eligible for online processing.  Applications for Change of Operator must be submitted by mail.  

Step-by-Step Registration Instructions (pdf, 12,896 KB)

Start the Online Filing process for Rule 222 Registration

Frequently Asked Questions (pdf, 129 KB)

Equipment Category

To Download Form to Mail in
with Payment, Click Below:

Negative Air Machines (Asbestos)

Form 222-A (PDF, 144 Kb)
(Click for online registration)

Boilers/Water Heaters & Process Heaters,
(1-2 MM BTU/hr rated heat input)

Form 222-B (PDF, 39 Kb)
(Click for online registration)


Form 222-C (PDF, 44 Kb)
(Click for online registration)

Oil Production Well Group

Form 222-OW (PDF, 722 Kb)

Natural Gas Well Heads, Well Pumps, Transfer Pumps, & Repressurizing Equipment

 Form 222-NPG (PDF, 412 Kb)

Agricultural Engines

Form 222-AG (PDF, 539 Kb)

Printing, Coating & Drying Equipment

Form 222-PCD (PDF, 39 Kb)

Agricultural Gasoline Storage & Dispensing Equipment

Form 222-SD (PDF, 498 Kb)

Facility with No Written Permits & Four Tons or More of VOC Emissions per Year

Low VOC Material Verification*

Form 222-4T (PDF, 494 Kb)

Form 109-LVM (PDF, 401 Kb)

Asphalt Day Tanker

Form 222-AT (PDF, 471 Kb)
(Click for online registration)

Asphalt Pavement Heater

Form 222-AH (PDF, 63 Kb)
(Click for online registration)

Diesel Fueled Boiler

Form 222-DB (PDF, 57 Kb)
(Click for online registration)

Food Oven

Form 222-FO (PDF, 171 Kb)
(Click for online registration)

Fuel Cell

Form 222-FC (PDF, 186 Kb)

IC Engines at Remote Radio Transmission Towers

Form 222-RT (PDF, 176 Kb)


Form 222-MT (PDF, 489 Kb)
(Click for online registration)

Portable Diesel Fueled Heater

Form 222-PH (PDF, 489 Kb)
(Click for online registration)

Power Pressure Washer and Hot Water or Steam Washer and Cleaner

Form 222-PW (PDF, 497 Kb)
(Click for online registration)

Storage of Odorants

Form 222-OS (PDF, 56 Kb)
(Click for online registration)

Tar Pot or Tar Kettle

Form 222-TP (PDF, 490 Kb)
(Click for online registration)

Equipment Used to Store Aqueous Urea Solutions

 Form 222-U (PDF, 294 Kb)
(Click for online registration)

Equipment in the Outer Continental Shelf (OCS) Under the Portable Equipment Registration Program (PERP)

 Form 222-OCS (PDF, 173 Kb)

Industrial Cooling Towers 

Form 222-CT (PDF, 190 Kb)
(Click for online registration)

*Form 109-LVM can be submitted in lieu of Form 222-4T to the Executive Officer in accordance with Rule 219 (h)(1)(E)(ii). 

The forms in PDF format are fillable with current or earlier versions of Adobe Acrobat Reader.  However, to save a copy of the completed forms, you will need a full version of Adobe Acrobat 7.0 or later.

Filing Fee: $260.61 (Effective 7/1/2023 - 6/30/2024)

In addition to an initial filing fee, affected equipment are subject to annual renewal fees in accordance with Rule 301(u)(3).  For more information about the filing program, please contact Jhoann Lopez or Susan Tsai.

You may also like ...

Jhoann Lopez
Jhoann Lopez
(909) 396-2034
Newsletter Sign Up
Periodic newsletter updates via Email on a variety of air quality-related topics

South Coast Air Quality Management District

21865 Copley Dr, Diamond Bar, CA 91765



© 2024 South Coast Air Quality Management District