ENVIRONMENTAL PROTECTION AGENCY [EPA-ROI-OAR-2008-0107; A-1-FRL- ] Adequacy Status of the Massachusetts 8-Hour Ozone Motor Vehicle Emissions Budgets for

Transportation Conformity Purposes; Massachusetts. AGENCY: Environmental Protection Agency (EPA) . ACTION: Notice of adequacy. SUMMARY: EPA is notifying the public that EPAhas found that the 2008 and 2009 motor vehicle emissions budgets in the January 31, 2008 Massachusetts 8-hour ozone State Implementation Plan revision are adequate for transportation conformity purposes. The submittal includes 2008 and 2009 motor vehicle emission budgets for the Boston-LawrenceWorcester (Eastern Massachusetts) and Springfield (Western Massachusetts) 8-hour ozone nonattainment areas. As a result of our finding, Massachusetts must usethese motor vehicle emission budgets for future conformity determinations. DATES: This finding is effective [insert date 15 days after Federal Register publication] . FOR FURTHER INFORMATIONCONTACT: Donald O . Cooke, Environmental Scientist, Air Quality Planning Unit, U .S. Environmental Protection Agency, EPA New England Regional Office, One Congress Street, Suite 1100 (CAQ, Boston, MA02114-2023, (617) 918-1668, cooke_ .donald c ,epa .gov.

SUPPLEMENTARY INFORMATION : Throughout this document, whenever "we," "us" or "our" is used, we mean EPA .2

Today's action is simply an announcement of a finding that we have already made. EPA New England sent a letter to the Massachusetts Department ofEnvironmental Protection on March 7, 2008, stating that the 2008 and 2009 motor vehicle emissions budgets (MVEBs) in the Boston-Lawrence-Worcester (Eastern Massachusetts) and Springfield (Western Massachusetts) 8-hour ozone nonattainment areas are adequate. Massachusetts submitted the budgets on January 31, 2008, as part ofthe 8-hour ozone attainment demonstration and reasonable further progress plan for Eastern and Western Massachusetts. This submittal was announced on EPA's conformity website, and received no comments. (See http ://www

.ena.gov/otag/stateresources/transconf/adequacy htm . Once there, click on "What SIP submissions are currently under EPAadequacy review?")

The 2008 and 2009 MVEBs, in tons per summer day (tpsd), for volatile organic compounds (VOC) and oxides ofnitrogen (NOX) for Eastern and Western Massachusetts, are as follows: Adequate Motor Vehicle Emissions Budgets

Boston-Lawrence-Worcester (Eastern Massachusetts) Area Springfield (Western Massachusetts) Area VOC (tpsd) NOX(tpsd) VOC(tpsd) NOX (tpsd) Year 2008 68.30 191 .30 11 .80 31 .30 Year 2009 63.50 174.96 10.73 27 .73 Transportation conformity is required by section 176(c) ofthe Clean Air Act. EPA's conformity rule requires that transportation plans, programs, and projects conformto state air quality implementation plans and establishes the criteria and procedures for determining whether3

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 criteria by which we determine whether a SIP's motor vehicle emissions budgets are adequate for conformity purposes are outlined in 40 CFR 93.118(e)(4) . We have described our process for determining the adequacy of submitted SIP budgets in our July 1, 2004, preamble starting at 69 FR 40038, and we used the information in these resources while making our adequacy determination. Please note that an adequacy reviewis separate fromEPA's completeness review, and it also should not be used to prejudge EPA's ultimate approval ofthe SIP . Even if we find a budget adequate, the SIP could later be disapproved. Authority: 42 U

.S.C. 7401-7671 q. 3- 1 ©°c .7 

### .~- L, .3, Dated: Robert W . Varney, Regional Administrator, EPANew

England.