Public Comment open on Ascensus’ application to revise voluntary limit and withdraw from AOP program

Ascensus Specialties LLC (Ascensus) is proposing to revise their existing voluntary limit on emissions of hazardous air pollutants (HAPs) per ORCAA Rule 6.1.12 and WAC 173-400-091 in order to characterize the facility as an area source with respect to all Maximum Achievable Control Technology (MACT) standards in 40 CFR Part 63 National Emission Standards for Hazardous Air Pollutants (NESHAPs) and a minor source with respect to the Air Operating Permit program. If this application is approved, Ascensus is also requesting that ORCAA withdraw the facility from the Air Operating Permit program. There are no emissions increased expected from this proposal.

ORCAA has reviewed Ascensus’ proposal and concludes that compliance with applicable air regulations and standards will likely be maintained. On this basis, ORCAA recommends that it be conditionally approved and that Ascensus be allowed to withdraw from the Air Operating Permit program.


Pursuant to ORCAA Rule 6.1.3(b)(2) and WAC 173-401-800, notice is hereby given of ORCAA’s Preliminary Recommendation to approve Ascensus’ NOC application as described above.


Copies of ORCAA’s Preliminary Recommendation is available on ORCAA’s website at the links below.  If you need assistance, please contact our office at 360-539-7610.

Application to Withdraw | Preliminary Determination | Public Notice of NOC Application


Comments on this case may be submitted to ORCAA in writing by 4:30 p.m. on August 18, 2020. Comments may be mailed to ORCAA at the address above or emailed to Comments that may be considered by ORCAA in making a final determination are those pertaining to air quality implications of the proposed project.

Notices & Hearings

Posted: July 9, 2024

Comment period open until: July 24, 2024

Posted: July 2, 2024

Comment period open until: July 17, 2024

Posted: July 2, 2024

Comment period open until: July 17, 2024

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