RE: Opportunity to comment on updates to permitted activities and air quality standards in Oregon

You hold an air quality permit with DEQ. This email is to inform you about proposed rule amendments that may affect your permitted activities. DEQ is developing a rulemaking proposal to update Oregon Administrative Rules as required by the Clean Air Act.

DEQ is accepting public comment on proposed permanent rule revisions. The revisions include:

•  Matching federal revisions to ambient air quality standards for nitrogen dioxide, sulfur dioxide and lead.

•  Adopting new 1-hour Significant Air Quality Impact Levels for nitrogen dioxide and sulfur dioxide.

The amendments, if adopted, will be submitted to the U.S. Environmental Protection Agency for approval as revisions to the Oregon State Implementation Plan, as required by the Clean Air Act.

The proposal affects new or existing modified industrial sources that emit nitrogen dioxide, sulfur dioxide or lead. If the above proposed rule amendments are approved by the Oregon Environmental Quality Commission, future ambient impact demonstration requirements will be affected. Permit holders will be required to demonstrate that significant increases of nitrogen dioxide and sulfur dioxide emissions will not cause or contribute to a violation of the 1-hour standards when an air quality impact analysis is required by either the Plant Site Emission Limit or Prevention of Significant Deterioration programs. If an analysis is required, the analysis must be conducted in accordance with a modeling protocol approved by DEQ and the results must be included in the application for a new or modified permit.

A public hearing will be held:

Aug. 15, 2013 at 6 p.m.

Oregon DEQ, Conference Room EQC B

811 SW 6^th Avenue

Portland, OR 97204

The public notice, which contains a link to the proposed rule amendments and invitation to comment, is posted here: www.deq.state.or.us/regulations/proposedrules.htm .

Comments on this proposal can be presented at the hearing or mailed, faxed or e-mailed to DEQ during the public comment period.  All comments must be received by 5 p.m. on Aug. 19, 2013.

E-mail Comments to: comment-SIP.SO2.NO2.Lead@deq.state.or.us

Mail Comments to:

Oregon DEQ

Air Quality Division

Attn: Carrie Capp

811 SW Sixth Avenue

Portland, OR 97204 

Fax Comments to: Carrie Capp, (503) 229-5675

For more information please contact Carrie Capp, (503) 229-5868