Chapter 173-460 WAC

This rulemaking will amend Chapter 173-460 WAC, Controls for New Sources of Toxic Air Pollutants.  This rule includes air quality permitting requirements for businesses that emit toxic air pollutants.

The rulemaking will use the most recent, best available health effects information to:

  • Update the list of toxic air pollutants.
  • Recalculate:
    • Acceptable source impact levels (ASIL)
    • Small quantity emission rates (SQER)
    • De minimis emission values
  • Update the rule to support the changes described above.

We are also starting a related, but different, process we call exploratory rulemaking to assess possible changes to the rest of Chapter 173-460 WAC.

Rulemaking timeline

Timeline

Announcement phase (CR-101)

Filing date:
Jul. 18, 2018


Announcement documents

Rule development phase

July 18, 2018 – Spring 2019



Public input & involvement

Ecology's meetings with stakeholders
 
Date Documents Location
Monday
Aug. 20, 2018
10 a.m. – noon
Agenda
Presentation
Methods for updating the list of toxic air pollutants
2018 draft Acceptable Source Impact Levels (ASIL) summary list
2018 ASIL options (spreadsheet)
Meeting summary
Ecology, Lacey (map to location)
webinar
Wednesday
Oct. 10, 2018
1:30 p.m. – 3:30 p.m.
Agenda
• Presentations
    • Toxicity equivalence and early life adjustment factors
    • Dimethyl mercury inhalation risk screening concentration
Dimethyl mercury poster
Ecology, Lacey (map to location)
webinar *
Friday
Nov. 16, 2018
1 p.m. – 3 p.m.
Criteria pollutants as toxic air pollutants Ecology, Lacey (map to location)
webinar *
Monday
Dec. 10, 2018
10 a.m. – noon
• Ammonium sulfate comments
    • Far West Agribusiness Association
    • McGregor
    • Simplot
    • Two Rivers Terminal
Three Rivers Convention Center, Kennewick (directions)
webinar *
Wednesday
Jan. 23, 2019
1 p.m. – 3 p.m.

Establishing small quantity emission rates (SQER)
Evaluating if SQER and de minimis emission values should be the same
• 2019 draft ASIL, SQER, de minimis emission values (spreadsheet)

Ecology, Lacey (map to location)
webinar *
Thursday
Feb. 21, 2019
1 p.m. – 3 p.m.
Ecology's recommendations:
• 2019 draft Acceptable Source Impact Levels (ASIL) summary list
• 2019 ASIL options (spreadsheet)
• Dimethyl mercury ASIL
• Toxicity equivalence
• Early life adjustment factors
• Criteria pollutants
• Ammonium sulfate
• Small quantity emission rates (SQER)
• De minimis emission value
Ecology, Lacey (map to location)
webinar * (registration and instructions)
Monday
March 11, 2019
1 p.m. – 3 p.m.
Agenda – discuss Ecology's recommendations Ecology, Lacey (map to location)
webinar * (registration and instructions)

* Webinar information:
   Register for each webinar to get your access code and password.
   To hear the webinar better, use your phone (instead of the computer) to call 1-855-929-3239.
   Meeting number (access code) 805 434 126
 

Additional languages

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Accessibility

To request ADA accommodation for disabilities, or printed materials in a format for the visually impaired, call Teresa Reno at 360-407-7285 or email teresa.reno@ecy.wa.gov. People with impaired hearing may call Washington Relay Service at 711. People with speech disability may call TTY at 877-833-6341.