Federal Register / Vol. 78, No. 109 / Thursday, June 6, 2013 / Notices 34095 

Internet. If you submit an electronic 

comment, EPA recommends that you 

include your name and other contact 

information in the body of your 

comment and with any disk or CD–ROM 

you submit. If EPA cannot read your 

comments due to technical difficulties 

and cannot contact you for clarification, 

EPA may not be able to consider your 

comments. Electronic files should avoid 

the use of special characters and any 

form of encryption and be free of any 

defects or viruses. For additional 

information about EPA’s public docket, 

visit the EPA Docket Center homepage 

at www.epa.gov/epahome/dockets.htm. 

Docket: Documents in the docket are 

listed in the www.regulations.gov index. 

Although listed in the index, some 

information is not publicly available, 

e.g., CBI or other information whose 

disclosure is restricted by statute. 

Certain other material, such as 

copyrighted material, will be publicly 

available only in hard copy. 

Publicly available docket materials 

are available either electronically at 

www.regulations.gov or in hard copy at 

the OEI Docket in the EPA Headquarters 

Docket Center. 

Dated: June 3, 2013. 

Abdel Kadry, 

Acting Deputy Director, National Center for 

Environmental Assessment. 

[FR Doc. 2013–13451 Filed 6–5–13; 8:45 am] 

BILLING CODE 6560–50–P 

ENVIRONMENTAL PROTECTION 

AGENCY 

[EPA–R10–OAR–2013–0386; FRL–9820–6] 

Adequacy Status of the Idaho, 

Northern Ada County PM10 State 

Implementation Plan for 

Transportation Conformity Purposes 

AGENCY: Environmental Protection 

Agency (EPA). 

ACTION: Notice of adequacy 

determination. 

SUMMARY: In this notice, the EPA is 

notifying the public of its finding that 

the motor vehicle emissions budgets 

(MVEBs) for particulate matter with an 

aerodynamic diameter of a nominal 10 

microns or less (PM10), nitrogen oxides 

(NOx), and volatile organic compounds 

(VOC) for the years 2008, 2015 and 2023 

in the Northern Ada County PM10 State 

Implementation Plan, Maintenance 

Plan: Ten-Year Update (Maintenance 

Plan Update) are adequate for 

transportation conformity purposes. The 

Maintenance Plan Update was 

submitted to the EPA by the State of 

Idaho Department of Environmental 

Quality (IDEQ or the State) on March 11, 

2013, with a clarification to the MVEB 

submitted on April 16, 2013. As a result 

of this finding, the Community Planning 

Association of Southwest Idaho, the 

Idaho Transportation Department and 

the U.S. Department of Transportation 

will be required to use these MVEBs for 

future transportation conformity 

determinations. 

DATES: This finding is effective June 21, 

2013. 

FOR FURTHER INFORMATION CONTACT: The 

finding will be available at the EPA’s 

conformity Web site: http:// 

www.epa.gov/otaq/stateresources/ 

transconf/adequacy.htm. You may also 

contact Claudia Vergnani Vaupel, U.S. 

EPA, Region 10 (OAWT–107), 1200 

Sixth Ave., Suite 900, Seattle WA 

98101; (206) 553–6121 or 

vaupel.claudia@epa.gov. 

SUPPLEMENTARY INFORMATION: This 

action provides notice of the EPA’s 

adequacy finding regarding the MVEBs 

in the Maintenance Plan Update in 

Northern Ada County. The EPA’s 

finding was made pursuant to the 

adequacy review process for 

implementation plan submissions 

delineated at 40 CFR 93.118(f)(1) under 

which the EPA reviews the adequacy of 

an implementation plan submission 

prior to the EPA’s final action on the 

implementation plan. 

The IDEQ submitted the Maintenance 

Plan Update to the EPA on March 11, 

2013, with a clarification to the MVEBs 

submitted on April 16, 2013. Pursuant 

to 40 CFR 93.118 (f)(1), the EPA notified 

the public of its receipt of this plan that 

would be reviewed for an adequacy 

determination on the EPA’s Web site 

and requested public comment by no 

later than May 15, 2013. The EPA 

received no comments on the plan 

during that comment period. As part of 

our review, we also reviewed comments 

submitted to the IDEQ during the State’s 

public hearing process and the State’s 

response to those comments. One 

comment related to the MVEBs was 

submitted during the State’s public 

hearing process. The commenter 

requested an explanation of the 

differences in the State’s current and 

previous PM10 emission budgets, and a 

justification for the State’s reliance on 

an emission factor that differed from the 

factor previously relied-upon in the 

State’s emission budget. The EPA finds 

that the State addressed the discrepancy 

identified by the commenter and 

adequately explained the derivation of 

the State’s current PM10 emission 

budget. 

The EPA Region 10 sent a letter to the 

IDEQ on May 17, 2013 (adequacy letter), 

subsequent to the close of the EPA 

comment period, stating that the EPA 

found the new MVEBs in the submitted 

Maintenance Plan Update to be 

adequate for use in transportation 

conformity. A copy of the adequacy 

letter and its enclosure is available at 

the EPA’s conformity Web site: http:// 

www.epa.gov/otaq/stateresources/ 

transconf/adequacy.htm. The new 

MVEBs that the EPA determined to be 

adequate for purposes of transportation 

conformity are listed in the following 

table. 

MVEBS FOR NORTHERN ADA COUNTY

PM10 MAINTENANCE AREA

[tons per day] 

Budget 

year PM10 NOX VOC 

2008 ...... 31.0 29.5 12.6 

2015 ...... 42.9 29.5 12.6 

2023 ...... 60.1 34.2 17.2 

Transportation conformity is required 

by section 176(c) of the Clean Air Act. 

The EPA’s conformity rule requires 

transportation plans, programs, and 

projects to conform to state 

implementation plans (SIPs) and 

establishes the criteria and procedures 

for determining whether or not they do. 

Conformity to a SIP means that 

transportation activities will not 

produce new air quality violations, 

worsen existing violations, or delay 

timely attainment of the national 

ambient air quality standards. 

The minimum criteria by which we 

determine whether a SIP’s MVEBs are 

adequate for conformity purposes are 

specified at 40 CFR 93.118(e)(4). The 

EPA’s analysis of how the State’s 

submission satisfies these criteria is 

found in the adequacy letter. The EPA’s 

MVEB adequacy review is separate from 

the EPA’s SIP completeness review and 

it also should not be used to prejudge 

the EPA’s ultimate approval of the SIP. 

Even if we find the budget adequate, the 

SIP could later be disapproved. 

Authority: 42 U.S.C. 7401–7671q. 

Dated: May 23, 2013. 

Dennis J. McLerran, 

Regional Administrator, Region 10. 

[FR Doc. 2013–13449 Filed 6–5–13; 8:45 am] 

BILLING CODE 6560–50–P 

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