Conformity Adequacy Review: Region 10
State Implementation Plans (SIP) Submissions that EPA has Found Adequate or Inadequate
Region 10: Alaska, Idaho, Oregon, and Washington
For more information about adequacy review, return to the main adequacy page.
This page provides a list of state implementation plans that include motor vehicle emission budgets that EPA Region 10 has found either adequate or inadequate for the purposes of transportation conformity.
Contact: Karl Pepple, (AK, ID, OR, WA) U.S. EPA Region 10, 1200 Sixth Ave., Seattle, WA 98101; phone: 206-553-1778. email: pepple.karl@epa.gov.
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| Alaska | ||||
|---|---|---|---|---|
| Area | Pollutant | SIP Submission | Finding (date budgets apply) | Additional Information/ Comments |
| Anchorage | carbon monoxide | maintenance plan | Adequate (2/29/2012) Letter FR Notice (PDF)(2 pp, 147 K, published February 14, 2012, About PDF) |
Budgets found adequate through the adequacy review process. |
| Adequate (6/23/2004) FR Notice |
SIP found adequate through SIP approval process. | |||
| attainment demonstration | Adequate (9/18/2002) FR Notice |
Budgets adequate by virtue of SIP approval. | ||
| Inadequate (5/14/1999) | Determination made under old process. | |||
| Eagle River | PM10 | limited maintenance plan | Adequate (5/14/2012) Letter FR Notice (PDF)(2 pp, 194 K, published April 27, 2012, About PDF) |
Budgets found adequate through the adequacy review process. |
| Fairbanks | carbon monoxide | maintenance plan | Adequate (9/27/2004) FR Notice |
Budgets adequate by virtue of SIP approval. |
| attainment demonstration | Adequate (4/5/2002) FR Notice |
Budgets found adequate through SIP approval process. | ||
| Inadequate (5/14/1999) | Determination made under old process | |||
| Idaho | ||||
| Area | Pollutant | SIP Submission | Finding (date budgets apply) | Additional Information/ Comments |
| Northern Ada County | PM10 | second limited maintenance plan | Adequate (6/21/2013) FR Notice Letter |
Budgets found adequate through adequacy review process. |
| carbon monoxide | limited maintenance plan | Adequate (12/27/2002) FR Notice |
Budgets found adequate through SIP approval process. | |
| Pocatello | PM10 | maintenance plan | Adequate (10/4/2004) Letter FR Notice |
Budgets found adequate through adequacy review process. |
| attainment demonstration | Inadequate (8/14/2000) Letter FR Notice |
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| Oregon | ||||
| Area | Pollutant | SIP Submission | Finding (date budgets apply) | Additional Information/ Comments |
| Grants Pass | CO | limited maintenance plan | Adequate (9/28/2015) 80 FR 44864 (7/28/2015) |
Budgets found adequate through the SIP approval process. |
| PM10 | limited maintenance plan | Adequate (9/28/2015) 80 FR 45431 (7/30/2015) |
Budgets found adequate through the SIP approval process. | |
| Klamath Falls | 2006 PM2.5 | attainment plan | Adequate (8/17/2015) 80 FR 45654 (7/31/2015) |
Budgets found adequate through the adequacy review process. |
| Medford | PM10 | maintenance plan | Adequate (8/18/2006) FR Notice |
Budgets found adequate through SIP approval process. |
| carbon monoxide | second maintenance plan | Adequate (5/13/2016) Letter 80 FR 54788 (4/28/16) |
Budgets found adequate through the adequacy review process. | |
| maintenance plan | Adequate (4/26/2002) Letter FR Notice |
Budgets found adequate through adequacy review process. | ||
| Oakridge | 2006 pm2.5 | attainment plan | Budgets found adequate through the adequacy review process | |
| Portland | carbon monoxide | maintenance plan | Adequate (1/24/2006) FR Notice |
Budgets found adequate through SIP approval process. |
| Salem | carbon monoxide | limited maintenance plan | Adequate (3/02/2009) FR Notice (PDF)(7 pp, 163 K, published December 30, 2008, About PDF) |
Budgets found adequate through SIP approval process. |
| Washington | ||||
| Area | Pollutant | SIP Submission | Finding (date budgets apply) | Additional Information/ Comments |
| Kent, Seattle, and Tacoma | PM10 | Limited maintenance plan | Adequate (8/20/2014) 79 FR 49239 (8/20/2014) |
Budgets found adequate through the SIP approval process. |
| Spokane | PM10 | limited maintenance plan | Adequate (4/12/2016) 81 FR 21470 (4/12/2016) |
Budgets found adequate through the SIP approval process. |
| Adequate (8/30/2005) FR Notice |
Budgets found adequate through SIP approval process. | |||
| carbon monoxide | maintenance plan | Adequate (8/29/2005) FR Notice |
Budgets found adequate through SIP approval process. | |
| attainment demonstration | Adequate (12/4/2002) Letter FR Notice |
Budgets found adequate through adequacy review process. | ||
| Inadequate (5/14/1999) | Determination made under old process | |||
| Tacoma-Pierce County | 2006 PM2.5 | maintenance plan | Adequate (2/10/2015) 80 FR 7347 (2/10/2015) |
Budgets found adequate through the SIP approval process. |
| Vancouver | carbon monoxide | limited maintenance plan | Adequate (12/4/2007) Letter FR Notice |
Budgets found adequate through adequacy review process. |
| Yakima | PM10 | limited maintenance plan | Adequate (11/29/2004) Letter FR Notice |
Budgets found adequate through adequacy review process. |
| carbon monoxide | limited maintenance plan | Adequate (12/31/2002) FR Notice |
Budgets found adequate through the SIP approval process. | |