Echols County..........................  ..............  Attainment/Unclassifiable.
    Effingham County.......................  ..............  Attainment/Unclassifiable.
    Elbert County..........................  ..............  Attainment/Unclassifiable.
    Emanuel County.........................  ..............  Attainment/Unclassifiable.
    Evans County...........................  ..............  Attainment/Unclassifiable.
    Fannin County..........................  ..............  Attainment/Unclassifiable.
    Fayette County.........................  ..............  Attainment/Unclassifiable.
    Forsyth County.........................  ..............  Attainment/Unclassifiable.
    Franklin County........................  ..............  Attainment/Unclassifiable.
    Fulton County..........................  ..............  Attainment/Unclassifiable.
    Gilmer County..........................  ..............  Attainment/Unclassifiable.
    Glascock County........................  ..............  Attainment/Unclassifiable.
    Glynn County...........................  ..............  Attainment/Unclassifiable.
    Gordon County..........................  ..............  Attainment/Unclassifiable.

    Grady County...........................  ..............  Attainment/Unclassifiable.
    Greene County..........................  ..............  Attainment/Unclassifiable.
    Gwinnett County........................  ..............  Attainment/Unclassifiable.
    Habersham County.......................  ..............  Attainment/Unclassifiable.
    Hall County............................  ..............  Attainment/Unclassifiable.
    Hancock County.........................  ..............  Attainment/Unclassifiable.
    Harris County..........................  ..............  Attainment/Unclassifiable.
    Hart County............................  ..............  Attainment/Unclassifiable.
    Heard County...........................  ..............  Attainment/Unclassifiable.
    Henry County...........................  ..............  Attainment/Unclassifiable.
    Houston County.........................  ..............  Attainment/Unclassifiable.
    Irwin County...........................  ..............  Attainment/Unclassifiable.
    Jackson County.........................  ..............  Attainment/Unclassifiable.
    Jeff Davis County......................  ..............  Attainment/Unclassifiable.
    Jefferson County.......................  ..............  Attainment/Unclassifiable.
    Jenkins County.........................  ..............  Attainment/Unclassifiable.
    Johnson County.........................  ..............  Attainment/Unclassifiable.
    Lanier County..........................  ..............  Attainment/Unclassifiable.
    Laurens County.........................  ..............  Attainment/Unclassifiable.
    Lee County.............................  ..............  Attainment/Unclassifiable.
    Liberty County.........................  ..............  Attainment/Unclassifiable.
    Lincoln County.........................  ..............  Attainment/Unclassifiable.
    Long County............................  ..............  Attainment/Unclassifiable.
    Lowndes County.........................  ..............  Attainment/Unclassifiable.
    Lumpkin County.........................  ..............  Attainment/Unclassifiable.
    Macon County...........................  ..............  Attainment/Unclassifiable.
    Madison County.........................  ..............  Attainment/Unclassifiable.
    Marion County..........................  ..............  Attainment/Unclassifiable.
    McDuffie County........................  ..............  Attainment/Unclassifiable.
    McIntosh County........................  ..............  Attainment/Unclassifiable.
    Miller County..........................  ..............  Attainment/Unclassifiable.
    Mitchell County........................  ..............  Attainment/Unclassifiable.
    Montgomery County......................  ..............  Attainment/Unclassifiable.
    Morgan County..........................  ..............  Attainment/Unclassifiable.
    Murray County..........................  ..............  Attainment/Unclassifiable.
    Muscogee County........................  ..............  Attainment/Unclassifiable.
    Newton County..........................  ..............  Attainment/Unclassifiable.
    Oconee County..........................  ..............  Attainment/Unclassifiable.
    Oglethorpe County......................  ..............  Attainment/Unclassifiable.
    Paulding County........................  ..............  Attainment/Unclassifiable.
    Peach County...........................  ..............  Attainment/Unclassifiable.
    Pickens County.........................  ..............  Attainment/Unclassifiable.
    Pierce County..........................  ..............  Attainment/Unclassifiable.
    Pike County............................  ..............  Attainment/Unclassifiable.
    Polk County............................  ..............  Attainment/Unclassifiable.
    Pulaski County.........................  ..............  Attainment/Unclassifiable.
    Putnam County..........................  ..............  Attainment/Unclassifiable.
    Quitman County.........................  ..............  Attainment/Unclassifiable.
    Rabun County...........................  ..............  Attainment/Unclassifiable.
    Randolph County........................  ..............  Attainment/Unclassifiable.
    Richmond County........................  ..............  Attainment/Unclassifiable.
    Rockdale County........................  ..............  Attainment/Unclassifiable.
    Schley County..........................  ..............  Attainment/Unclassifiable.
    Screven County.........................  ..............  Attainment/Unclassifiable.
    Seminole County........................  ..............  Attainment/Unclassifiable.
    Spalding County........................  ..............  Attainment/Unclassifiable.
    Stephens County........................  ..............  Attainment/Unclassifiable.
    Stewart County.........................  ..............  Attainment/Unclassifiable.
    Sumter County..........................  ..............  Attainment/Unclassifiable.
    Talbot County..........................  ..............  Attainment/Unclassifiable.
    Taliaferro County......................  ..............  Attainment/Unclassifiable.
    Tattnall County........................  ..............  Attainment/Unclassifiable.
    Taylor County..........................  ..............  Attainment/Unclassifiable.
    Telfair County.........................  ..............  Attainment/Unclassifiable.
    Terrell County.........................  ..............  Attainment/Unclassifiable.
    Thomas County..........................  ..............  Attainment/Unclassifiable.
    Tift County............................  ..............  Attainment/Unclassifiable.
    Toombs County..........................  ..............  Attainment/Unclassifiable.
    Towns County...........................  ..............  Attainment/Unclassifiable.
    Treutlen County........................  ..............  Attainment/Unclassifiable.

    Troup County...........................  ..............  Attainment/Unclassifiable.
    Turner County..........................  ..............  Attainment/Unclassifiable.
    Twiggs County..........................  ..............  Attainment/Unclassifiable.
    Union County...........................  ..............  Attainment/Unclassifiable.
    Walker County..........................  ..............  Attainment/Unclassifiable.
    Walton County..........................  ..............  Attainment/Unclassifiable.
    Ware County............................  ..............  Attainment/Unclassifiable.
    Warren County..........................  ..............  Attainment/Unclassifiable.
    Washington County......................  ..............  Attainment/Unclassifiable.
    Wayne County...........................  ..............  Attainment/Unclassifiable.
    Webster County.........................  ..............  Attainment/Unclassifiable.
    Wheeler County.........................  ..............  Attainment/Unclassifiable.
    White County...........................  ..............  Attainment/Unclassifiable.
    Whitfield County.......................  ..............  Attainment/Unclassifiable.
    Wilcox County..........................  ..............  Attainment/Unclassifiable.
    Wilkes County..........................  ..............  Attainment/Unclassifiable.
    Wilkinson County.......................  ..............  Attainment/Unclassifiable.
    Worth County...........................  ..............  Attainment/Unclassifiable.
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is April 9, 2018, unless otherwise noted.
\3\ Floyd County will be designated by December 31, 2020.

* * * * *

0
13. Section 81.312 is amended by revising the table entitled ``Hawaii--
2010 Sulfur Dioxide NAAQS (Primary)'' to read as follows:

Sec.  81.312  Hawaii.

* * * * *

                                   Hawaii--2010 Sulfur Dioxide NAAQS (Primary)
----------------------------------------------------------------------------------------------------------------
                                                                         Designation
          Designated area \1\ \3\           --------------------------------------------------------------------
                                                Date \2\                             Type
----------------------------------------------------------------------------------------------------------------
Hawaii County..............................         9/12/16  Attainment/Unclassifiable.
Kalawao County.............................  ..............  Attainment/Unclassifiable.
Kauai County...............................  ..............  Attainment/Unclassifiable.
Maui County................................  ..............  Attainment/Unclassifiable.
----------------------------------------------------------------------------------------------------------------
\1\Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is April 9, 2018, unless otherwise noted.
\3\ Honolulu County will be designated by December 31, 2020.

* * * * *

0
14. Section 81.313 is amended by adding a table entitled ``Idaho--2010
Sulfur Dioxide NAAQS (Primary)'' following the table ``Idaho--1971
Sulfur Dioxide NAAQS (Primary and Secondary)'' to read as follows:

Sec.  81.313  Idaho.

* * * * *

                                   Idaho--2010 Sulfur Dioxide NAAQS (Primary)
----------------------------------------------------------------------------------------------------------------
                                                                         Designation
            Designated area \1\             --------------------------------------------------------------------
                                                Date \2\                             Type
----------------------------------------------------------------------------------------------------------------
Entire State...............................  ..............  Attainment/Unclassifiable.
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is April 9, 2018, unless otherwise noted.

* * * * *

0
15. Section 81.314 is amended by revising the table entitled
``Illinois--2010 Sulfur Dioxide NAAQS (Primary)'' to read as follows:

Sec.  81.314   Illinois.

* * * * *

                                  Illinois--2010 Sulfur Dioxide NAAQS (Primary)
----------------------------------------------------------------------------------------------------------------
                                                                         Designation
          Designated area \1\ \3\           --------------------------------------------------------------------
                                                Date \2\                             Type
----------------------------------------------------------------------------------------------------------------
Alton Township, IL.........................         9/12/16  Nonattainment.
    Madison County (part)
        Within Alton Township: Area east of
         Corporal Belchik Memorial
         Expressway, south of East
         Broadway, south of Route 3, and
         north of Route 143
Lemont, IL.................................         10/4/13  Nonattainment.
    Cook County (part)
        Lemont Township
    Will County (part)
        DuPage Township and Lockport
         Township
Pekin, IL..................................         10/4/13  Nonattainment.
    Tazewell County (part)
        Cincinnati Township and Pekin
         Township
    Peoria County (part)
        Hollis Township
Williamson County, IL......................         9/12/16  Nonattainment.
    Williamson County
Jasper County, IL..........................         9/12/16  Attainment/Unclassifiable.
    Jasper County
Massac County, IL..........................         9/12/16  Attainment/Unclassifiable.
    Massac County
Putnam/Bureau Counties, IL.................         9/12/16  Attainment/Unclassifiable.
    Bureau County
    Putnam County
Wood River Township, IL....................         9/12/16  Attainment/Unclassifiable.
    Madison County (part)
        All of Wood River Township, and the
         area in Chouteau Township north of
         Cahokia Diversion Channel
Adams County...............................  ..............  Attainment/Unclassifiable.
Alexander County...........................  ..............  Attainment/Unclassifiable.
Bond County................................  ..............  Attainment/Unclassifiable.
Boone County...............................  ..............  Attainment/Unclassifiable.
Brown County...............................  ..............  Attainment/Unclassifiable.
Calhoun County.............................  ..............  Attainment/Unclassifiable.
Carroll County.............................  ..............  Attainment/Unclassifiable.
Cass County................................  ..............  Attainment/Unclassifiable.
Champaign County...........................  ..............  Attainment/Unclassifiable.
Christian County...........................  ..............  Attainment/Unclassifiable.
Clark County...............................  ..............  Attainment/Unclassifiable.
Clay County................................  ..............  Attainment/Unclassifiable.
Clinton County.............................  ..............  Attainment/Unclassifiable.
Coles County...............................  ..............  Attainment/Unclassifiable.
Cook County (part) (remainder).............  ..............  Attainment/Unclassifiable.
Crawford County............................  ..............  Attainment/Unclassifiable.
Cumberland County..........................  ..............  Attainment/Unclassifiable.
De Kalb County.............................  ..............  Attainment/Unclassifiable.
De Witt County.............................  ..............  Attainment/Unclassifiable.
Douglas County.............................  ..............  Attainment/Unclassifiable.
Du Page County.............................  ..............  Attainment/Unclassifiable.
Edgar County...............................  ..............  Attainment/Unclassifiable.
Edwards County.............................  ..............  Attainment/Unclassifiable.
Effingham County...........................  ..............  Attainment/Unclassifiable.
Fayette County.............................  ..............  Attainment/Unclassifiable.
Ford County................................  ..............  Attainment/Unclassifiable.
Franklin County............................  ..............  Attainment/Unclassifiable.
Fulton County..............................  ..............  Attainment/Unclassifiable.
Gallatin County............................  ..............  Attainment/Unclassifiable.
Greene County..............................  ..............  Attainment/Unclassifiable.
Grundy County..............................  ..............  Attainment/Unclassifiable.
Hamilton County............................  ..............  Attainment/Unclassifiable.
Hancock County.............................  ..............  Attainment/Unclassifiable.
Hardin County..............................  ..............  Attainment/Unclassifiable.
Henderson County...........................  ..............  Attainment/Unclassifiable.
Henry County...............................  ..............  Attainment/Unclassifiable.
Iroquois County............................  ..............  Attainment/Unclassifiable.
Jackson County.............................  ..............  Attainment/Unclassifiable.
Jefferson County...........................  ..............  Attainment/Unclassifiable.
Jersey County..............................  ..............  Attainment/Unclassifiable.
Jo Daviess County..........................  ..............  Attainment/Unclassifiable.
Johnson County.............................  ..............  Attainment/Unclassifiable.
Kane County................................  ..............  Attainment/Unclassifiable.

Kankakee County............................  ..............  Attainment/Unclassifiable.
Kendall County.............................  ..............  Attainment/Unclassifiable.
Knox County................................  ..............  Attainment/Unclassifiable.
Lake County................................  ..............  Attainment/Unclassifiable.
La Salle County............................  ..............  Attainment/Unclassifiable.
Lawrence County............................  ..............  Attainment/Unclassifiable.
Lee County.................................  ..............  Attainment/Unclassifiable.
Livingston County..........................  ..............  Attainment/Unclassifiable.
Logan County...............................  ..............  Attainment/Unclassifiable.
McDonough County...........................  ..............  Attainment/Unclassifiable.
McHenry County.............................  ..............  Attainment/Unclassifiable.
McLean County..............................  ..............  Attainment/Unclassifiable.
Macoupin County............................  ..............  Attainment/Unclassifiable.
Madison County (part) (remainder)..........  ..............  Attainment/Unclassifiable.
Marion County..............................  ..............  Attainment/Unclassifiable.
Marshall County............................  ..............  Attainment/Unclassifiable.
Mason County...............................  ..............  Attainment/Unclassifiable.
Menard County..............................  ..............  Attainment/Unclassifiable.
Mercer County..............................  ..............  Attainment/Unclassifiable.
Monroe County..............................  ..............  Attainment/Unclassifiable.
Montgomery County..........................  ..............  Attainment/Unclassifiable.
Morgan County..............................  ..............  Attainment/Unclassifiable.
Moultrie County............................  ..............  Attainment/Unclassifiable.
Ogle County................................  ..............  Attainment/Unclassifiable.
Peoria County (part) (remainder)...........  ..............  Attainment/Unclassifiable.
Perry County...............................  ..............  Attainment/Unclassifiable.
Piatt County...............................  ..............  Attainment/Unclassifiable.
Pike County................................  ..............  Attainment/Unclassifiable.
Pope County................................  ..............  Attainment/Unclassifiable.
Pulaski County.............................  ..............  Attainment/Unclassifiable.
Randolph County............................  ..............  Attainment/Unclassifiable.
Richland County............................  ..............  Attainment/Unclassifiable.
Rock Island County.........................  ..............  Attainment/Unclassifiable.
St. Clair County...........................  ..............  Attainment/Unclassifiable.
Saline County..............................  ..............  Attainment/Unclassifiable.
Sangamon County............................  ..............  Attainment/Unclassifiable.
Schuyler County............................  ..............  Attainment/Unclassifiable.
Scott County...............................  ..............  Attainment/Unclassifiable.
Shelby County..............................  ..............  Attainment/Unclassifiable.
Stark County...............................  ..............  Attainment/Unclassifiable.
Stephenson County..........................  ..............  Attainment/Unclassifiable.
Tazewell County (part) (remainder).........  ..............  Attainment/Unclassifiable.
Union County...............................  ..............  Attainment/Unclassifiable.
Vermilion County...........................  ..............  Attainment/Unclassifiable.
Wabash County..............................  ..............  Attainment/Unclassifiable.
Warren County..............................  ..............  Attainment/Unclassifiable.
Washington County..........................  ..............  Attainment/Unclassifiable.
Wayne County...............................  ..............  Attainment/Unclassifiable.
White County...............................  ..............  Attainment/Unclassifiable.
Whiteside County...........................  ..............  Attainment/Unclassifiable.
Will County (part) (remainder).............  ..............  Attainment/Unclassifiable.
Winnebago County...........................  ..............  Attainment/Unclassifiable.
Woodford County............................  ..............  Attainment/Unclassifiable.
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is April 9, 2018, unless otherwise noted.
\3\ Macon County will be designated by December 31, 2020.

* * * * *

0
16. Section 81.315 is amended by revising the table entitled
``Indiana--2010 Sulfur Dioxide NAAQS (Primary)'' to read as follows:

Sec.  81.315   Indiana.

* * * * *

                                  Indiana--2010 Sulfur Dioxide NAAQS (Primary)
----------------------------------------------------------------------------------------------------------------
                                                                         Designation
          Designated area \1\ \3\           --------------------------------------------------------------------
                                                Date \2\                             Type
----------------------------------------------------------------------------------------------------------------
Huntington, IN.............................  ..............  Nonattainment.
    Huntington County (part)
        Huntington Township
Indianapolis, IN...........................         10/4/13  Nonattainment.
    Marion County (part)
        Wayne Township, Center Township,
         Perry Township
Morgan County, IN..........................         10/4/13  Nonattainment.
    Morgan County (part)
        Clay Township, Washington Township
Southwest Indiana, IN......................         10/4/13  Nonattainment.
    Daviess County (part)
        Veale Township
    Pike County (part)
        Washington Township
Terre Haute, IN............................         10/4/13  Nonattainment.
    Vigo County (part)
        Fayette Township, Harrison Township
Gibson County, IN..........................         9/12/16  Attainment/Unclassifiable.
    Gibson County
Jefferson County, IN.......................         9/12/16  Attainment/Unclassifiable.
    Jefferson County (part)
        Graham, Lancaster, Madison, Monroe,
         Republican, Shelby, and Smyrna
         Townships
LaPorte County, IN.........................         9/12/16  Attainment/Unclassifiable
    LaPorte County
Posey County, IN...........................         9/12/16  Attainment/Unclassifiable.
    Posey County (part)
        Bethel, Center, Harmony, Lynn,
         Marrs, Robb, Robinson, and Smith
         Townships
Spencer County, IN.........................         9/12/16  Attainment/Unclassifiable.
    Spencer County (part)
        Ohio Township north of UTM 4187.580
         km northing, and Carter, Clay,
         Grass, Hammond, Harrison, and
         Jackson Townships
Adams County...............................  ..............  Attainment/Unclassifiable.
Allen County...............................  ..............  Attainment/Unclassifiable.
Bartholomew County.........................  ..............  Attainment/Unclassifiable.
Benton County..............................  ..............  Attainment/Unclassifiable.
Blackford County...........................  ..............  Attainment/Unclassifiable.
Boone County...............................  ..............  Attainment/Unclassifiable.
Brown County...............................  ..............  Attainment/Unclassifiable.
Carroll County.............................  ..............  Attainment/Unclassifiable.
Cass County................................  ..............  Attainment/Unclassifiable.
Clark County...............................  ..............  Attainment/Unclassifiable.
Clay County................................  ..............  Attainment/Unclassifiable.
Clinton County.............................  ..............  Attainment/Unclassifiable.
Crawford County............................  ..............  Attainment/Unclassifiable.
Daviess County (part) (remainder)..........  ..............  Attainment/Unclassifiable.
Dearborn County............................  ..............  Attainment/Unclassifiable.
Decatur County.............................  ..............  Attainment/Unclassifiable.
DeKalb County..............................  ..............  Attainment/Unclassifiable.
Delaware County............................  ..............  Attainment/Unclassifiable.
Dubois County..............................  ..............  Attainment/Unclassifiable.
Elkhart County.............................  ..............  Attainment/Unclassifiable.
Fayette County.............................  ..............  Attainment/Unclassifiable.
Floyd County...............................  ..............  Attainment/Unclassifiable.
Fountain County............................  ..............  Attainment/Unclassifiable.
Franklin County............................  ..............  Attainment/Unclassifiable.
Fulton County..............................  ..............  Attainment/Unclassifiable.
Grant County...............................  ..............  Attainment/Unclassifiable.
Greene County..............................  ..............  Attainment/Unclassifiable.
Hamilton County............................  ..............  Attainment/Unclassifiable.
Hancock County.............................  ..............  Attainment/Unclassifiable.
Harrison County............................  ..............  Attainment/Unclassifiable.
Hendricks County...........................  ..............  Attainment/Unclassifiable.
Henry County...............................  ..............  Attainment/Unclassifiable.
Howard County..............................  ..............  Attainment/Unclassifiable.
Huntington County (part) (remainder).......  ..............  Attainment/Unclassifiable.
Jackson County.............................  ..............  Attainment/Unclassifiable.
Jasper County..............................  ..............  Attainment/Unclassifiable.
Jay County.................................  ..............  Attainment/Unclassifiable.
Jefferson County...........................  ..............  Attainment/Unclassifiable.
Jennings County............................  ..............  Attainment/Unclassifiable.

Johnson County.............................  ..............  Attainment/Unclassifiable.
Knox County................................  ..............  Attainment/Unclassifiable.
Kosciusko County...........................  ..............  Attainment/Unclassifiable.
LaGrange County............................  ..............  Attainment/Unclassifiable.
Lake County................................  ..............  Attainment/Unclassifiable.
Lawrence County............................  ..............  Attainment/Unclassifiable.
Madison County.............................  ..............  Attainment/Unclassifiable.
Marion County (part) (remainder)...........  ..............  Attainment/Unclassifiable.
Marshall County............................  ..............  Attainment/Unclassifiable.
Martin County..............................  ..............  Attainment/Unclassifiable.
Miami County...............................  ..............  Attainment/Unclassifiable.
Monroe County..............................  ..............  Attainment/Unclassifiable.
Montgomery County..........................  ..............  Attainment/Unclassifiable.
Morgan County (part) (remainder)...........  ..............  Attainment/Unclassifiable.
Newton County..............................  ..............  Attainment/Unclassifiable.
Noble County...............................  ..............  Attainment/Unclassifiable.
Ohio County................................  ..............  Attainment/Unclassifiable.
Orange County..............................  ..............  Attainment/Unclassifiable.
Owen County................................  ..............  Attainment/Unclassifiable.
Parke County...............................  ..............  Attainment/Unclassifiable.
Perry County...............................  ..............  Attainment/Unclassifiable.
Pike County (part) (remainder).............  ..............  Attainment/Unclassifiable.
Posey County...............................  ..............  Attainment/Unclassifiable.
Pulaski County.............................  ..............  Attainment/Unclassifiable.
Putnam County..............................  ..............  Attainment/Unclassifiable.
Randolph County............................  ..............  Attainment/Unclassifiable.
Ripley County..............................  ..............  Attainment/Unclassifiable.
Rush County................................  ..............  Attainment/Unclassifiable.
St. Joseph County..........................  ..............  Attainment/Unclassifiable.
Scott County...............................  ..............  Attainment/Unclassifiable.
Shelby County..............................  ..............  Attainment/Unclassifiable.
Spencer County.............................  ..............  Attainment/Unclassifiable.
Starke County..............................  ..............  Attainment/Unclassifiable.
Steuben County.............................  ..............  Attainment/Unclassifiable.
Sullivan County............................  ..............  Attainment/Unclassifiable.
Switzerland County.........................  ..............  Attainment/Unclassifiable.
Tippecanoe County..........................  ..............  Attainment/Unclassifiable.
Tipton County..............................  ..............  Attainment/Unclassifiable.
Union County...............................  ..............  Attainment/Unclassifiable.
Vanderburgh County.........................  ..............  Attainment/Unclassifiable.
Vermillion County..........................  ..............  Attainment/Unclassifiable.
Vigo County (part) (remainder).............  ..............  Attainment/Unclassifiable.
Wabash County..............................  ..............  Attainment/Unclassifiable.
Warren County..............................  ..............  Attainment/Unclassifiable.
Warrick County.............................  ..............  Attainment/Unclassifiable.
Washington County..........................  ..............  Attainment/Unclassifiable.
Wayne County...............................  ..............  Attainment/Unclassifiable.
Wells County...............................  ..............  Attainment/Unclassifiable.
White County...............................  ..............  Attainment/Unclassifiable.
Whitley County.............................  ..............  Attainment/Unclassifiable.
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is April 9, 2018, unless otherwise noted.
\3\ Porter County will be designated by December 31, 2020.

* * * * *

0
17. Section 81.316 is amended by revising the table entitled ``Iowa--
2010 Sulfur Dioxide NAAQS (Primary)'' to read as follows:

Sec.  81.316  Iowa.

* * * * *

                                    Iowa--2010 Sulfur Dioxide NAAQS (Primary)
----------------------------------------------------------------------------------------------------------------
                                                                         Designation
            Designated area \1\             --------------------------------------------------------------------
                                                Date \2\                             Type
----------------------------------------------------------------------------------------------------------------
Muscatine, IA..............................         10/4/13  Nonattainment.

    Muscatine County (part)
        Sections 1-3, 10-15, 22-27, 34-36
         of T77N, R3W (Lake Township)
        Sections 1-3, 10-15, 22-27, 34-36
         of T76N, R3W (Seventy-six
         Township)
            T77N, R2W (Bloomington
             Township)
            T76N, R2W (Fruitland Township)
        All sections except 1, 12, 13, 24,
         25, 36 of T77N, R1W (Sweetland
         Township)
Linn County, IA............................  ..............  Unclassifiable.
    Linn County
Woodbury County, IA........................         9/12/16  Unclassifiable.
    Woodbury County
Des Moines County, IA......................         9/12/16  Attainment/Unclassifiable.
    Des Moines County
Louisa County, IA..........................  ..............  Attainment/Unclassifiable.
    Louisa County
Pottawattamie County, IA...................  ..............  Attainment/Unclassifiable.
    Pottawattamie County
Wapello County, IA.........................         9/12/16  Attainment/Unclassifiable.
    Wapello County
Statewide:.................................  ..............  Attainment/Unclassifiable.
    Adair County
    Adams County
    Allamakee County
    Appanoose County
    Audubon County
    Benton County
    Black Hawk County
    Boone County
    Bremer County
    Buchanan County
    Buena Vista County
    Butler County
    Calhoun County
    Carroll County
    Cass County
    Cedar County
    Cerro Gordo County
    Cherokee County
    Chickasaw County
    Clarke County
    Clay County
    Clayton County
    Clinton County
    Crawford County
    Dallas County
    Davis County
    Decatur County
    Delaware County
    Dickinson County
    Dubuque County
    Emmet County
    Fayette County
    Floyd County
    Franklin County
    Fremont County
    Greene County
    Grundy County
    Guthrie County
    Hamilton County
    Hancock County
    Hardin County
    Harrison County
    Henry County
    Howard County
    Humboldt County
    Ida County
    Iowa County
    Jackson County
    Jasper County
    Jefferson County
    Johnson County

    Jones County
    Keokuk County
    Kossuth County
    Lee County
    Lucas County
    Lyon County
    Madison County
    Mahaska County
    Marion County
    Marshall County
    Mills County
    Mitchell County
    Monona County
    Monroe County
    Montgomery County
    Muscatine County (portion of Muscatine
     County not designated Nonattainment on
     10/4/13)
    O'Brien County
    Osceola County
    Page County
    Palo Alto County
    Plymouth County
    Pocahontas County
    Polk County
    Poweshiek County
    Ringgold County
    Sac County
    Scott County
    Shelby County
    Sioux County
    Story County
    Tama County
    Taylor County
    Union County
    Van Buren County
    Warren County
    Washington County
    Wayne County
    Webster County
    Winnebago County
    Winneshiek County
    Worth County
    Wright County
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is April 9, 2018, unless otherwise noted.

* * * * *

0
18. Section 81.317 is amended by revising the table entitled ``Kansas--
2010 Sulfur Dioxide NAAQS (Primary)'' to read as follows:

Sec.  81.317  Kansas.

* * * * *

                                   Kansas--2010 Sulfur Dioxide NAAQS (Primary)
----------------------------------------------------------------------------------------------------------------
                                                                         Designation
            Designated area \1\             --------------------------------------------------------------------
                                                Date \2\                             Type
----------------------------------------------------------------------------------------------------------------
Shawnee County, KS.........................         9/12/16  Unclassifiable.
    Shawnee County
Wyandotte County, KS.......................         9/12/16  Unclassifiable.
    Wyandotte County
Linn County, KS............................         9/12/16  Attainment/Unclassifiable.
    Linn County
Statewide:.................................  ..............  Attainment/Unclassifiable.
    Allen County
    Anderson County
    Atchison County

    Barber County
    Barton County
    Bourbon County
    Brown County
    Butler County
    Chase County
    Chautauqua County
    Cherokee County
    Cheyenne County
    Clark County
    Clay County
    Cloud County
    Coffey County
    Comanche County
    Cowley County
    Crawford County
    Decatur County
    Dickinson County
    Doniphan County
    Douglas County
    Edwards County
    Elk County
    Ellis County
    Ellsworth County
    Finney County
    Ford County
    Franklin County
    Geary County
    Gove County
    Graham County
    Grant County
    Gray County
    Greeley County
    Greenwood County
    Hamilton County
    Harper County
    Harvey County
    Haskell County
    Hodgeman County
    Jackson County
    Jefferson County
    Jewell County
    Johnson County
    Kearny County
    Kingman County
    Kiowa County
    Labette County
    Lane County
    Leavenworth County
    Lincoln County
    Logan County
    Lyon County
    Marion County
    Marshall County
    McPherson County
    Meade County
    Miami County
    Mitchell County
    Montgomery County
    Morris County
    Morton County
    Nemaha County
    Neosho County
    Ness County
    Norton County
    Osage County
    Osborne County
    Ottawa County
    Pawnee County
    Phillips County

    Pottawatomie County
    Pratt County
    Rawlins County
    Reno County
    Republic County
    Rice County
    Riley County
    Rooks County
    Rush County
    Russell County
    Saline County
    Scott County
    Sedgwick County
    Seward County
    Sheridan County
    Sherman County
    Smith County
    Stafford County
    Stanton County
    Stevens County
    Sumner County
    Thomas County
    Trego County
    Wabaunsee County
    Wallace County
    Washington County
    Wichita County
    Wilson County
    Woodson County
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is April 9, 2018, unless otherwise noted.

* * * * *

0
19. Section 81.318 is amended by revising the table entitled
``Kentucky--2010 Sulfur Dioxide NAAQS (Primary)'' to read as follows:

Sec.  81.318  Kentucky.

* * * * *

                                  Kentucky--2010 Sulfur Dioxide NAAQS (Primary)
----------------------------------------------------------------------------------------------------------------
                                                                         Designation
            Designated area \4\             --------------------------------------------------------------------
                                                Date \1\                             Type
----------------------------------------------------------------------------------------------------------------
Campbell-Clermont Counties, KY-OH: \2\.....       3/10/2017  Attainment.
    Campbell County (part)
        That portion of Campbell County
         which lies south and west of the
         Ohio River described as follows:
         Beginning at geographic
         coordinates 38.9735 North
         Latitude, 84.3017 West Longitude
         (NAD 1983) on the edge of the Ohio
         River running southwesterly to KY
         Highway 1566; thence continuing
         running southwesterly along KY
         Highway 1566 to KY Highway 9 (AA
         Highway); thence running
         northwesterly along KY Highway 9
         (AA Highway) from Hwy 1566 to
         Interstate 275; thence running
         northeasterly along Interstate 275
         to Highway 2345 (John's Hill
         Road), Hwy 2345 to US-27, US-27 to
         I-275, I-275 to the Ohio River;
         thence running southeasterly along
         the Ohio River from Interstate 275
         to geographic coordinates 38.9735
         North Latitude, 84.3017 West
         Longitude (NAD 1983).
Jefferson County, KY \2\...................         10/4/13  Nonattainment.

    Jefferson County (part)
        That portion of Jefferson County
         compassed by the polygon with the
         vertices using Universal Traverse
         Mercator (UTM) coordinates in UTM
         zone 16 with datum NAD83 as
         follows:
        (1) Ethan Allen Way extended to the
         Ohio River at UTM Easting (m)
         595738, UTM Northing 4214086 and
         Dixie Highway (US60 and US31W) at
         UTM Easting (m) 59751, UTM
         Northing 4212946;
        (2) Along Dixie Highway from UTM
         Easting (m) 597515, UTM Northing
         4212946 to UTM Easting (m) 595859,
         UTM Northing 4210678;
        (3) Near the adjacent property
         lines of Louisville Gas and
         Electric-Mill Creek Electric
         Generating Station and Kosmos
         Cement where they join Dixie
         Highway at UTM Easting (m) 595859,
         UTM Northing 4210678 and the Ohio
         River at UTM Easting (m) 595326,
         UTM Northing 4211014;
        (4) Along the Ohio River from UTM
         Easting (m) 595326, UTM Northing
         4211014 to UTM Easting (m) 595738,
         UTM Northing 4214086
Ohio County, KY \2\........................         9/12/16  Unclassifiable.
    Ohio County
Pulaski County, KY \2\.....................         9/12/16  Unclassifiable.
    Pulaski County
Rest of State: \3\
    Adair County...........................  ..............  Attainment/Unclassifiable.
    Allen County...........................  ..............  Attainment/Unclassifiable.
    Anderson County........................  ..............  Attainment/Unclassifiable.
    Ballard County.........................  ..............  Attainment/Unclassifiable.
    Barren County..........................  ..............  Attainment/Unclassifiable.
    Bath County............................  ..............  Attainment/Unclassifiable.
    Bell County............................  ..............  Attainment/Unclassifiable.
    Boone County...........................  ..............  Attainment/Unclassifiable.
    Bourbon County.........................  ..............  Attainment/Unclassifiable.
    Boyd County............................  ..............  Attainment/Unclassifiable.
    Boyle County...........................  ..............  Attainment/Unclassifiable.
    Bracken County.........................  ..............  Attainment/Unclassifiable.
    Breathitt County.......................  ..............  Attainment/Unclassifiable.
    Breckinridge County....................  ..............  Attainment/Unclassifiable.
    Bullitt County.........................  ..............  Attainment/Unclassifiable.
    Butler County..........................  ..............  Attainment/Unclassifiable.
    Caldwell County........................  ..............  Attainment/Unclassifiable.
    Calloway County........................  ..............  Attainment/Unclassifiable.
    Campbell County (part) (remainder).....  ..............  Attainment/Unclassifiable.
    Carlisle County........................  ..............  Attainment/Unclassifiable.
    Carroll County.........................  ..............  Attainment/Unclassifiable.
    Carter County..........................  ..............  Attainment/Unclassifiable.
    Casey County...........................  ..............  Attainment/Unclassifiable.
    Christian County.......................  ..............  Attainment/Unclassifiable.
    Clark County...........................  ..............  Attainment/Unclassifiable.
    Clay County............................  ..............  Attainment/Unclassifiable.
    Clinton County.........................  ..............  Attainment/Unclassifiable.
    Crittenden County......................  ..............  Attainment/Unclassifiable.
    Cumberland County......................  ..............  Attainment/Unclassifiable.
    Daviess County.........................  ..............  Attainment/Unclassifiable.
    Edmonson County........................  ..............  Attainment/Unclassifiable.
    Elliott County.........................  ..............  Attainment/Unclassifiable.
    Estill County..........................  ..............  Attainment/Unclassifiable.
    Fayette County.........................  ..............  Attainment/Unclassifiable.
    Fleming County.........................  ..............  Attainment/Unclassifiable.
    Floyd County...........................  ..............  Attainment/Unclassifiable.
    Franklin County........................  ..............  Attainment/Unclassifiable.
    Fulton County..........................  ..............  Attainment/Unclassifiable.
    Gallatin County........................  ..............  Attainment/Unclassifiable.
    Garrard County.........................  ..............  Attainment/Unclassifiable.
    Grant County...........................  ..............  Attainment/Unclassifiable.
    Graves County..........................  ..............  Attainment/Unclassifiable.
    Grayson County.........................  ..............  Attainment/Unclassifiable.
    Green County...........................  ..............  Attainment/Unclassifiable.
    Greenup County.........................  ..............  Attainment/Unclassifiable.
    Hancock County.........................  ..............  Attainment/Unclassifiable.
    Hardin County..........................  ..............  Attainment/Unclassifiable.
    Harlan County..........................  ..............  Attainment/Unclassifiable.
    Harrison County........................  ..............  Attainment/Unclassifiable.
    Hart County............................  ..............  Attainment/Unclassifiable.

    Henderson County (part) \4\............  ..............  Attainment/Unclassifiable.
        Census Block Groups<PHONE_NUMBER>13,
<PHONE_NUMBER>14,<PHONE_NUMBER>24, and
<PHONE_NUMBER>04
    Henry County...........................  ..............  Attainment/Unclassifiable.
    Hickman County.........................  ..............  Attainment/Unclassifiable.
    Hopkins County.........................  ..............  Attainment/Unclassifiable.
    Jackson County.........................  ..............  Attainment/Unclassifiable.
    Jefferson County (part) (remainder)....  ..............  Attainment/Unclassifiable.
    Jessamine County.......................  ..............  Attainment/Unclassifiable.
    Johnson County.........................  ..............  Attainment/Unclassifiable.
    Kenton County..........................  ..............  Attainment/Unclassifiable.
    Knott County...........................  ..............  Attainment/Unclassifiable.
    Knox County............................  ..............  Attainment/Unclassifiable.
    LaRue County...........................  ..............  Attainment/Unclassifiable.
    Laurel County..........................  ..............  Attainment/Unclassifiable.
    Lawrence County........................  ..............  Attainment/Unclassifiable.
    Lee County.............................  ..............  Attainment/Unclassifiable.
    Leslie County..........................  ..............  Attainment/Unclassifiable.
    Letcher County.........................  ..............  Attainment/Unclassifiable.
    Lewis County...........................  ..............  Attainment/Unclassifiable.
    Lincoln County.........................  ..............  Attainment/Unclassifiable.
    Livingston County......................  ..............  Attainment/Unclassifiable.
    Logan County...........................  ..............  Attainment/Unclassifiable.
    Lyon County............................  ..............  Attainment/Unclassifiable.
    Madison County.........................  ..............  Attainment/Unclassifiable.
    Magoffin County........................  ..............  Attainment/Unclassifiable.
    Marion County..........................  ..............  Attainment/Unclassifiable.
    Marshall County........................  ..............  Attainment/Unclassifiable.
    Martin County..........................  ..............  Attainment/Unclassifiable.
    Mason County...........................  ..............  Attainment/Unclassifiable.
    McCracken County.......................  ..............  Attainment/Unclassifiable.
    McCreary County........................  ..............  Attainment/Unclassifiable.
    McLean County..........................  ..............  Attainment/Unclassifiable.
    Meade County...........................  ..............  Attainment/Unclassifiable.
    Menifee County.........................  ..............  Attainment/Unclassifiable.
    Mercer County..........................  ..............  Attainment/Unclassifiable.
    Metcalfe County........................  ..............  Attainment/Unclassifiable.
    Monroe County..........................  ..............  Attainment/Unclassifiable.
    Montgomery County......................  ..............  Attainment/Unclassifiable.
    Morgan County..........................  ..............  Attainment/Unclassifiable.
    Muhlenberg County......................  ..............  Attainment/Unclassifiable.
    Nelson County..........................  ..............  Attainment/Unclassifiable.
    Nicholas County........................  ..............  Attainment/Unclassifiable.
    Oldham County..........................  ..............  Attainment/Unclassifiable.
    Owen County............................  ..............  Attainment/Unclassifiable.
    Owsley County..........................  ..............  Attainment/Unclassifiable.
    Pendleton County.......................  ..............  Attainment/Unclassifiable.
    Perry County...........................  ..............  Attainment/Unclassifiable.
    Pike County............................  ..............  Attainment/Unclassifiable.
    Powell County..........................  ..............  Attainment/Unclassifiable.
    Robertson County.......................  ..............  Attainment/Unclassifiable.
    Rockcastle County......................  ..............  Attainment/Unclassifiable.
    Rowan County...........................  ..............  Attainment/Unclassifiable.
    Russell County.........................  ..............  Attainment/Unclassifiable.
    Scott County...........................  ..............  Attainment/Unclassifiable.
    Shelby County..........................  ..............  Attainment/Unclassifiable.
    Simpson County.........................  ..............  Attainment/Unclassifiable.
    Spencer County.........................  ..............  Attainment/Unclassifiable.
    Taylor County..........................  ..............  Attainment/Unclassifiable.
    Todd County............................  ..............  Attainment/Unclassifiable.
    Trigg County...........................  ..............  Attainment/Unclassifiable.
    Trimble County.........................  ..............  Attainment/Unclassifiable.
    Union County...........................  ..............  Attainment/Unclassifiable.
    Warren County..........................  ..............  Attainment/Unclassifiable.
    Washington County......................  ..............  Attainment/Unclassifiable.
    Wayne County...........................  ..............  Attainment/Unclassifiable.
    Whitley County.........................  ..............  Attainment/Unclassifiable.
    Wolfe County...........................  ..............  Attainment/Unclassifiable.
    Woodford County........................  ..............  Attainment/Unclassifiable.
----------------------------------------------------------------------------------------------------------------
\1\ This date is April 9, 2018, unless otherwise noted.

\2\ Excludes Indian country located in each area, if any, unless otherwise specified.
\3\ Includes any Indian country in each county or area, if any, unless otherwise specified. EPA is not
  determining the boundaries of any area of Indian country in this table, including any area of Indian country
  located in the larger designation area. The inclusion of any Indian country in the designation area is not a
  determination that the state has regulatory authority under the Clean Air Act for such Indian country.
\4\ Webster County and the remainder of Henderson County will be designated by December 31, 2020.

* * * * *

0
20. Section 81.319 is amended by revising the table entitled
``Louisiana--2010 Sulfur Dioxide NAAQS (Primary)'' to read as follows:

Sec.  81.319   Louisiana.

* * * * *

                                 Louisiana--2010 Sulfur Dioxide NAAQS (Primary)
----------------------------------------------------------------------------------------------------------------
                                                                         Designation
          Designated area \1\ \3\           --------------------------------------------------------------------
                                                Date \2\                             Type
----------------------------------------------------------------------------------------------------------------
Evangeline Parish (Partial)................  ..............  Nonattainment.
Portion of Evangeline Parish bounded by:
    570250m E, 3400300m N
    570250m E, 3403300m N
    572400m E, 3403300m N
    572400m E, 3400300m N
    NAD83 15R
St. Bernard Parish, LA.....................         10/4/13  Nonattainment.
Calcasieu Parish, LA.......................         9/12/16  Unclassifiable.
St. Mary Parish............................  ..............  Unclassifiable.
Acadia Parish..............................  ..............  Attainment/Unclassifiable.
Allen Parish...............................  ..............  Attainment/Unclassifiable.
Assumption Parish..........................  ..............  Attainment/Unclassifiable.
Avoyelles Parish...........................  ..............  Attainment/Unclassifiable.
Beauregard Parish..........................  ..............  Attainment/Unclassifiable.
Bienville Parish...........................  ..............  Attainment/Unclassifiable.
Bossier Parish.............................  ..............  Attainment/Unclassifiable.
Caddo Parish...............................  ..............  Attainment/Unclassifiable.
Caldwell Parish............................  ..............  Attainment/Unclassifiable.
Cameron Parish.............................  ..............  Attainment/Unclassifiable.
Catahoula Parish...........................  ..............  Attainment/Unclassifiable.
Claiborne Parish...........................  ..............  Attainment/Unclassifiable.
Concordia Parish...........................  ..............  Attainment/Unclassifiable.
De Soto Parish.............................         9/12/16  Attainment/Unclassifiable.
East Carroll Parish........................  ..............  Attainment/Unclassifiable.
East Feliciana Parish......................  ..............  Attainment/Unclassifiable.
Evangeline Parish (part) (remainder).......  ..............  Attainment/Unclassifiable.
Franklin Parish............................  ..............  Attainment/Unclassifiable.
Grant Parish...............................  ..............  Attainment/Unclassifiable.
Iberia Parish..............................  ..............  Attainment/Unclassifiable.
Iberville Parish...........................  ..............  Attainment/Unclassifiable.
Jackson Parish.............................  ..............  Attainment/Unclassifiable.
Jefferson Parish...........................  ..............  Attainment/Unclassifiable.
Jefferson Davis Parish.....................  ..............  Attainment/Unclassifiable.
Lafayette Parish...........................  ..............  Attainment/Unclassifiable.
Lafourche Parish...........................  ..............  Attainment/Unclassifiable.
LaSalle Parish.............................  ..............  Attainment/Unclassifiable.
Lincoln Parish.............................  ..............  Attainment/Unclassifiable.
Livingston Parish..........................  ..............  Attainment/Unclassifiable.
Madison Parish.............................  ..............  Attainment/Unclassifiable.
Morehouse Parish...........................  ..............  Attainment/Unclassifiable.
Natchitoches Parish........................  ..............  Attainment/Unclassifiable.
Orleans Parish.............................  ..............  Attainment/Unclassifiable.
Ouachita Parish............................  ..............  Attainment/Unclassifiable.
Plaquemines Parish.........................  ..............  Attainment/Unclassifiable.
Point Coupee...............................  ..............  Attainment/Unclassifiable.
Rapides Parish.............................  ..............  Attainment/Unclassifiable.
Red River Parish...........................  ..............  Attainment/Unclassifiable.
Richland Parish............................  ..............  Attainment/Unclassifiable.
Sabine Parish..............................  ..............  Attainment/Unclassifiable.
St. Helena Parish..........................  ..............  Attainment/Unclassifiable.
St. John the Baptist Parish................  ..............  Attainment/Unclassifiable.
St. Landry Parish..........................  ..............  Attainment/Unclassifiable.
St. Martin Parish..........................  ..............  Attainment/Unclassifiable.
St. Mary Parish............................  ..............  Attainment/Unclassifiable.
St. Tammany Parish.........................  ..............  Attainment/Unclassifiable.
Tangipahoa Parish..........................  ..............  Attainment/Unclassifiable.
Tensas Parish..............................  ..............  Attainment/Unclassifiable.
Terrebonne Parish..........................  ..............  Attainment/Unclassifiable.
Union Parish...............................  ..............  Attainment/Unclassifiable.

Vermilion Parish...........................  ..............  Attainment/Unclassifiable.
Vernon Parish..............................  ..............  Attainment/Unclassifiable.
Washington Parish..........................  ..............  Attainment/Unclassifiable.
Webster Parish.............................  ..............  Attainment/Unclassifiable.
West Carroll Parish........................  ..............  Attainment/Unclassifiable.
Winn Parish................................  ..............  Attainment/Unclassifiable.
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is April 9, 2018, unless otherwise noted.
\3\ East Baton Rouge, St. Charles, St. James, and West Baton Rouge Parishes will be designated by December 31,
  2020.

* * * * *

0
21. Section 81.320 is amended by adding a table entitled ``Maine--2010
Sulfur Dioxide NAAQS (Primary)'' following the table ``Maine--1971
Sulfur Dioxide NAAQS (Primary and Secondary)'' to read as follows:

Sec.  81.320  Maine.

* * * * *

                                   Maine--2010 Sulfur Dioxide NAAQS (Primary)
----------------------------------------------------------------------------------------------------------------
                                                                         Designation
            Designated area \1\             --------------------------------------------------------------------
                                                Date \2\                             Type
----------------------------------------------------------------------------------------------------------------
Statewide:.................................  ..............  Attainment/Unclassifiable.
    Androscoggin County
    Aroostook County
    Cumberland County
    Franklin County
    Hancock County
    Kennebec County
    Knox County
    Lincoln County
    Oxford County
    Penobscot County
    Piscataquis County
    Sagadahoc County
    Somerset County
    Waldo County
    Washington County
    York County
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is April 9, 2018, unless otherwise noted.

* * * * *

0
22. Section 81.321 is amended by revising the table entitled
``Maryland--2010 Sulfur Dioxide NAAQS (Primary)'' to read as follows:

Sec.  81.321   Maryland.

* * * * *

                                  Maryland--2010 Sulfur Dioxide NAAQS (Primary)
----------------------------------------------------------------------------------------------------------------
                                                                         Designation
          Designated area \1\ \3\           --------------------------------------------------------------------
                                                Date \2\                             Type
----------------------------------------------------------------------------------------------------------------
Anne Arundel County and Baltimore County,           9/12/16  Nonattainment.
 MD\1\.
    Anne Arundel County (part)
        Portions of Anne Arundel County
         that are within 26.8 kilometers of
         Herbert A. Wagner's Unit 3 stack,
         which is located at 39.17765 N.
         latitude, 76.52752 W. longitude
    Baltimore County (part)
        Portions of Baltimore County that
         are within 26.8 kilometers of
         Herbert A. Wagner's Unit 3 stack,
         which is located at 39.17765 N.
         latitude, 76.52752 W. longitude
Anne Arundel County (part).................  ..............  Attainment/Unclassifiable.
    Remainder of County
Baltimore City, MD.........................         9/12/16  Attainment/Unclassifiable.
Baltimore County (part)....................  ..............  Attainment/Unclassifiable.

    Remainder of County
Calvert County.............................  ..............  Attainment/Unclassifiable.
Caroline County............................  ..............  Attainment/Unclassifiable.
Carroll County.............................  ..............  Attainment/Unclassifiable.
Cecil County...............................  ..............  Attainment/Unclassifiable.
Charles County.............................  ..............  Attainment/Unclassifiable.
Dorchester County..........................  ..............  Attainment/Unclassifiable.
Frederick County...........................  ..............  Attainment/Unclassifiable.
Garrett County.............................  ..............  Attainment/Unclassifiable.
Harford County.............................  ..............  Attainment/Unclassifiable.
Howard County..............................  ..............  Attainment/Unclassifiable.
Kent County................................  ..............  Attainment/Unclassifiable.
Montgomery County..........................  ..............  Attainment/Unclassifiable.
Prince George's County.....................  ..............  Attainment/Unclassifiable.
Queen Anne's County........................  ..............  Attainment/Unclassifiable.
Somerset County............................  ..............  Attainment/Unclassifiable.
St. Mary's County..........................  ..............  Attainment/Unclassifiable.
Talbot County..............................  ..............  Attainment/Unclassifiable.
Washington County..........................  ..............  Attainment/Unclassifiable.
Wicomico County............................  ..............  Attainment/Unclassifiable.
Worcester County...........................  ..............  Attainment/Unclassifiable.
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is April 9, 2018, unless otherwise noted.
\3\ Allegany County will be designated by December 31, 2020.

* * * * *

0
23. Section 81.322 is amended by adding a table entitled
``Massachusetts--2010 Sulfur Dioxide NAAQS (Primary)'' following the
table ``Massachusetts--1971 Sulfur Dioxide NAAQS (Primary and
Secondary)'' to read as follows:

Sec.  81.322  Massachusetts.

* * * * *

                               Massachusetts--2010 Sulfur Dioxide NAAQS (Primary)
----------------------------------------------------------------------------------------------------------------
                                                                         Designation
            Designated area \1\             --------------------------------------------------------------------
                                                Date \2\                             Type
----------------------------------------------------------------------------------------------------------------
Statewide:
    Barnstable County......................  ..............  Attainment/Unclassifiable.
    Berkshire County.......................  ..............  Attainment/Unclassifiable.
    Bristol County.........................  ..............  Attainment/Unclassifiable.
    Dukes County...........................  ..............  Attainment/Unclassifiable.
    Essex County...........................  ..............  Attainment/Unclassifiable.
    Franklin County........................  ..............  Attainment/Unclassifiable.
    Hampden County.........................  ..............  Attainment/Unclassifiable.
    Hampshire County.......................  ..............  Attainment/Unclassifiable.
    Middlesex County.......................  ..............  Attainment/Unclassifiable.
    Nantucket County.......................  ..............  Attainment/Unclassifiable.
    Norfolk County.........................  ..............  Attainment/Unclassifiable.
    Plymouth County........................  ..............  Attainment/Unclassifiable.
    Suffolk County.........................  ..............  Attainment/Unclassifiable.
    Worcester County.......................  ..............  Attainment/Unclassifiable.
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is April 9, 2018, unless otherwise noted.

* * * * *

0
24. Section 81.323 is amended by revising the table entitled
``Michigan--2010 Sulfur Dioxide NAAQS (Primary)'' to read as follows:

Sec.  81.323   Michigan.

* * * * *

                                  Michigan--2010 Sulfur Dioxide NAAQS (Primary)
----------------------------------------------------------------------------------------------------------------
                                                                         Designation
            Designated area \1\             --------------------------------------------------------------------
                                                Date \2\                             Type
----------------------------------------------------------------------------------------------------------------
Detroit, MI................................         10/4/13  Nonattainment.
    Wayne County (part)
        The area bounded on the east by the
         Michigan-Ontario border, on the
         south by the Wayne County-Monroe
         County border, on the west by
         Interstate 75 north to Southfield
         Road, Southfield Road to
         Interstate 94, and Interstate 94
         north to Michigan Avenue, and on
         the north by Michigan Avenue to
         Woodward Avenue and a line on
         Woodward Avenue extended to the
         Michigan-Ontario border.
St. Clair, MI..............................         9/12/16  Nonattainment.
    St. Clair County (part)
        Area defined by the St. Clair River
         for the eastern boundary, an
         extension from the St. Clair River
         straight west to the intersection
         of State Highway M-29 and St.
         Clair River Drive, continuing west
         on State Highway M-29 to Church
         Road to Arnold Road to County Line
         Road for the southern boundary,
         County Line Road and the Macomb/
         St. Clair County boundary to
         Stoddard Road to Wales Ridge Road
         for the western boundary, and
         Alpine Road to Fitz Road to Smith
         Creek Road to Range Road to Huron
         Avenue, extending straight east
         from the intersection of Huron
         Road and River Road to the St.
         Clair River for the northern
         boundary.
Bay County, MI.............................         9/12/16  Attainment/Unclassifiable.
    Bay County
Lansing, MI................................         9/12/16  Attainment/Unclassifiable.
    Eaton County
    Ingham County
Marquette County, MI.......................         9/12/16  Attainment/Unclassifiable.
    Marquette County
Monroe County, MI..........................         9/12/16  Attainment/Unclassifiable.
    Monroe County
Ottawa County, MI..........................         9/12/16  Attainment/Unclassifiable.
    Ottawa County
Alcona County..............................  ..............  Attainment/Unclassifiable.
Alger County...............................  ..............  Attainment/Unclassifiable.
Allegan County.............................  ..............  Attainment/Unclassifiable.
Alpena County..............................  ..............  Attainment/Unclassifiable.
Antrim County..............................  ..............  Attainment/Unclassifiable.
Arenac County..............................  ..............  Attainment/Unclassifiable.
Baraga County..............................  ..............  Attainment/Unclassifiable.
Barry County...............................  ..............  Attainment/Unclassifiable.
Benzie County..............................  ..............  Attainment/Unclassifiable.
Berrien County.............................  ..............  Attainment/Unclassifiable.
Branch County..............................  ..............  Attainment/Unclassifiable.
Calhoun County.............................  ..............  Attainment/Unclassifiable.
Cass County................................  ..............  Attainment/Unclassifiable.
Charlevoix County..........................  ..............  Attainment/Unclassifiable.
Cheboygan County...........................  ..............  Attainment/Unclassifiable.
Chippewa County............................  ..............  Attainment/Unclassifiable.
Clare County...............................  ..............  Attainment/Unclassifiable.
Clinton County.............................  ..............  Attainment/Unclassifiable.
Crawford County............................  ..............  Attainment/Unclassifiable.
Delta County...............................  ..............  Attainment/Unclassifiable.
Dickinson County...........................  ..............  Attainment/Unclassifiable.
Emmet County...............................  ..............  Attainment/Unclassifiable.
Genesee County.............................  ..............  Attainment/Unclassifiable.
Gladwin County.............................  ..............  Attainment/Unclassifiable.
Gogebic County.............................  ..............  Attainment/Unclassifiable.
Grand Traverse County......................  ..............  Attainment/Unclassifiable.
Gratiot County.............................  ..............  Attainment/Unclassifiable.
Hillsdale County...........................  ..............  Attainment/Unclassifiable.
Houghton County............................  ..............  Attainment/Unclassifiable.
Huron County...............................  ..............  Attainment/Unclassifiable.
Ionia County...............................  ..............  Attainment/Unclassifiable.
Iosco County...............................  ..............  Attainment/Unclassifiable.
Iron County................................  ..............  Attainment/Unclassifiable.
Isabella County............................  ..............  Attainment/Unclassifiable.
Jackson County.............................  ..............  Attainment/Unclassifiable.
Kalamazoo County...........................  ..............  Attainment/Unclassifiable.
Kalkaska County............................  ..............  Attainment/Unclassifiable.
Kent County................................  ..............  Attainment/Unclassifiable.
Keweenaw County............................  ..............  Attainment/Unclassifiable.
Lake County................................  ..............  Attainment/Unclassifiable.
Lapeer County..............................  ..............  Attainment/Unclassifiable.
Leelanau County............................  ..............  Attainment/Unclassifiable.

Lenawee County.............................  ..............  Attainment/Unclassifiable.
Livingston County..........................  ..............  Attainment/Unclassifiable.
Luce County................................  ..............  Attainment/Unclassifiable.
Mackinac County............................  ..............  Attainment/Unclassifiable.
Macomb County..............................  ..............  Attainment/Unclassifiable.
Manistee County............................  ..............  Attainment/Unclassifiable.
Mason County...............................  ..............  Attainment/Unclassifiable.
Mecosta County.............................  ..............  Attainment/Unclassifiable.
Menominee County...........................  ..............  Attainment/Unclassifiable.
Midland County.............................  ..............  Attainment/Unclassifiable.
Missaukee County...........................  ..............  Attainment/Unclassifiable.
Montcalm County............................  ..............  Attainment/Unclassifiable.
Montmorency County.........................  ..............  Attainment/Unclassifiable.
Muskegon County............................  ..............  Attainment/Unclassifiable.
Newaygo County.............................  ..............  Attainment/Unclassifiable.
Oakland County.............................  ..............  Attainment/Unclassifiable.
Oceana County..............................  ..............  Attainment/Unclassifiable.
Ogemaw County..............................  ..............  Attainment/Unclassifiable.
Ontonagon County...........................  ..............  Attainment/Unclassifiable.
Osceola County.............................  ..............  Attainment/Unclassifiable.
Oscoda County..............................  ..............  Attainment/Unclassifiable.
Otsego County..............................  ..............  Attainment/Unclassifiable.
Presque Isle County........................  ..............  Attainment/Unclassifiable.
Roscommon County...........................  ..............  Attainment/Unclassifiable.
Saginaw County.............................  ..............  Attainment/Unclassifiable.
St. Clair County (remainder)...............  ..............  Attainment/Unclassifiable.
St. Joseph County..........................  ..............  Attainment/Unclassifiable.
Sanilac County.............................  ..............  Attainment/Unclassifiable.
Schoolcraft County.........................  ..............  Attainment/Unclassifiable.
Shiawassee County..........................  ..............  Attainment/Unclassifiable.
Tuscola County.............................  ..............  Attainment/Unclassifiable.
Van Buren County...........................  ..............  Attainment/Unclassifiable.
Washtenaw County...........................  ..............  Attainment/Unclassifiable.
Wayne County (remainder)...................  ..............  Attainment/Unclassifiable.
Wexford County.............................  ..............  Attainment/Unclassifiable.
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is April 9, 2018, unless otherwise noted.

* * * * *

0
25. Section 81.324 is amended by adding a table entitled ``Minnesota--
2010 Sulfur Dioxide NAAQS (Primary)'' following the table ``Minnesota--
1971 Sulfur Dioxide NAAQS (Primary and Secondary)'' to read as follows:

Sec.  81.324   Minnesota.

* * * * *

                                 Minnesota--2010 Sulfur Dioxide NAAQS (Primary)
----------------------------------------------------------------------------------------------------------------
                                                                         Designation
            Designated area \1\             --------------------------------------------------------------------
                                                Date \2\                             Type
----------------------------------------------------------------------------------------------------------------
Goodhue County.............................  ..............  Unclassifiable.
Aitkin County..............................  ..............  Attainment/Unclassifiable.
Anoka County...............................  ..............  Attainment/Unclassifiable.
Becker County..............................  ..............  Attainment/Unclassifiable.
Beltrami County............................  ..............  Attainment/Unclassifiable.
Benton County..............................  ..............  Attainment/Unclassifiable.
Big Stone County...........................  ..............  Attainment/Unclassifiable.
Blue Earth County..........................  ..............  Attainment/Unclassifiable.
Brown County...............................  ..............  Attainment/Unclassifiable.
Carlton County.............................  ..............  Attainment/Unclassifiable.
Carver County..............................  ..............  Attainment/Unclassifiable.
Cass County................................  ..............  Attainment/Unclassifiable.
Chippewa County............................  ..............  Attainment/Unclassifiable.
Chisago County.............................  ..............  Attainment/Unclassifiable.
Clay County................................  ..............  Attainment/Unclassifiable.
Clearwater County..........................  ..............  Attainment/Unclassifiable.
Cook County................................  ..............  Attainment/Unclassifiable.

Cottonwood County..........................  ..............  Attainment/Unclassifiable.
Crow Wing County...........................  ..............  Attainment/Unclassifiable.
Dakota County..............................  ..............  Attainment/Unclassifiable.
Dodge County...............................  ..............  Attainment/Unclassifiable.
Douglas County.............................  ..............  Attainment/Unclassifiable.
Faribault County...........................  ..............  Attainment/Unclassifiable.
Fillmore County............................  ..............  Attainment/Unclassifiable.
Freeborn County............................  ..............  Attainment/Unclassifiable.
Grant County...............................  ..............  Attainment/Unclassifiable.
Hennepin County............................  ..............  Attainment/Unclassifiable.
Houston County.............................  ..............  Attainment/Unclassifiable.
Hubbard County.............................  ..............  Attainment/Unclassifiable.
Isanti County..............................  ..............  Attainment/Unclassifiable.
Itasca County..............................  ..............  Attainment/Unclassifiable.
Jackson County.............................  ..............  Attainment/Unclassifiable.
Kanabec County.............................  ..............  Attainment/Unclassifiable.
Kandiyohi County...........................  ..............  Attainment/Unclassifiable.
Kittson County.............................  ..............  Attainment/Unclassifiable.
Koochiching County.........................  ..............  Attainment/Unclassifiable.
Lac qui Parle County.......................  ..............  Attainment/Unclassifiable.
Lake County................................  ..............  Attainment/Unclassifiable.
Lake of the Woods County...................  ..............  Attainment/Unclassifiable.
Le Sueur County............................  ..............  Attainment/Unclassifiable.
Lincoln County.............................  ..............  Attainment/Unclassifiable.
Lyon County................................  ..............  Attainment/Unclassifiable.
McLeod County..............................  ..............  Attainment/Unclassifiable.
Mahnomen County............................  ..............  Attainment/Unclassifiable.
Marshall County............................  ..............  Attainment/Unclassifiable.
Martin County..............................  ..............  Attainment/Unclassifiable.
Meeker County..............................  ..............  Attainment/Unclassifiable.
Mille Lacs County..........................  ..............  Attainment/Unclassifiable.
Morrison County............................  ..............  Attainment/Unclassifiable.
Mower County...............................  ..............  Attainment/Unclassifiable.
Murray County..............................  ..............  Attainment/Unclassifiable.
Nicollet County............................  ..............  Attainment/Unclassifiable.
Nobles County..............................  ..............  Attainment/Unclassifiable.
Norman County..............................  ..............  Attainment/Unclassifiable.
Olmsted County.............................  ..............  Attainment/Unclassifiable.
Otter Tail County..........................  ..............  Attainment/Unclassifiable.
Pennington County..........................  ..............  Attainment/Unclassifiable.
Pine County................................  ..............  Attainment/Unclassifiable.
Pipestone County...........................  ..............  Attainment/Unclassifiable.
Polk County................................  ..............  Attainment/Unclassifiable.
Pope County................................  ..............  Attainment/Unclassifiable.
Ramsey County..............................  ..............  Attainment/Unclassifiable.
Red Lake County............................  ..............  Attainment/Unclassifiable.
Redwood County.............................  ..............  Attainment/Unclassifiable.
Renville County............................  ..............  Attainment/Unclassifiable.
Rice County................................  ..............  Attainment/Unclassifiable.
Rock County................................  ..............  Attainment/Unclassifiable.
Roseau County..............................  ..............  Attainment/Unclassifiable.
St. Louis County...........................  ..............  Attainment/Unclassifiable.
Scott County...............................  ..............  Attainment/Unclassifiable.
Sherburne County...........................  ..............  Attainment/Unclassifiable.
Sibley County..............................  ..............  Attainment/Unclassifiable.
Stearns County.............................  ..............  Attainment/Unclassifiable.
Steele County..............................  ..............  Attainment/Unclassifiable.
Stevens County.............................  ..............  Attainment/Unclassifiable.
Swift County...............................  ..............  Attainment/Unclassifiable.
Todd County................................  ..............  Attainment/Unclassifiable.
Traverse County............................  ..............  Attainment/Unclassifiable.
Wabasha County.............................  ..............  Attainment/Unclassifiable.
Wadena County..............................  ..............  Attainment/Unclassifiable.
Waseca County..............................  ..............  Attainment/Unclassifiable.
Washington County..........................  ..............  Attainment/Unclassifiable.
Watonwan County............................  ..............  Attainment/Unclassifiable.
Wilkin County..............................  ..............  Attainment/Unclassifiable.
Winona County..............................  ..............  Attainment/Unclassifiable.
Wright County..............................  ..............  Attainment/Unclassifiable.

Yellow Medicine County.....................  ..............  Attainment/Unclassifiable.
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is April 9, 2018, unless otherwise noted.

* * * * *

0
26. Section 81.325 is amended by revising the table entitled
``Mississippi--2010 Sulfur Dioxide NAAQS (Primary)'' to read as
follows:

Sec.  81.325   Mississippi.

* * * * *

                                Mississippi--2010 Sulfur Dioxide NAAQS (Primary)
----------------------------------------------------------------------------------------------------------------
                                                                         Designation
            Designated area \1\             --------------------------------------------------------------------
                                                Date \2\                             Type
----------------------------------------------------------------------------------------------------------------
Adams County...............................  ..............  Attainment/Unclassifiable.
Alcorn County..............................  ..............  Attainment/Unclassifiable.
Amite County...............................  ..............  Attainment/Unclassifiable.
Attala County..............................  ..............  Attainment/Unclassifiable.
Benton County..............................  ..............  Attainment/Unclassifiable.
Bolivar County.............................  ..............  Attainment/Unclassifiable.
Calhoun County.............................  ..............  Attainment/Unclassifiable.
Carroll County.............................  ..............  Attainment/Unclassifiable.
Chickasaw County...........................  ..............  Attainment/Unclassifiable.
Choctaw County.............................  ..............  Attainment/Unclassifiable.
Claiborne County...........................  ..............  Attainment/Unclassifiable.
Clarke County..............................  ..............  Attainment/Unclassifiable.
Clay County................................  ..............  Attainment/Unclassifiable.
Coahoma County.............................  ..............  Attainment/Unclassifiable.
Copiah County..............................  ..............  Attainment/Unclassifiable.
Covington County...........................  ..............  Attainment/Unclassifiable.
DeSoto County..............................  ..............  Attainment/Unclassifiable.
Forrest County.............................  ..............  Attainment/Unclassifiable.
Franklin County............................  ..............  Attainment/Unclassifiable.
George County..............................  ..............  Attainment/Unclassifiable.
Greene County..............................  ..............  Attainment/Unclassifiable.
Grenada County.............................  ..............  Attainment/Unclassifiable.
Hancock County.............................  ..............  Attainment/Unclassifiable.
Harrison County............................  ..............  Attainment/Unclassifiable.
Hinds County...............................  ..............  Attainment/Unclassifiable.
Holmes County..............................  ..............  Attainment/Unclassifiable.
Humphreys County...........................  ..............  Attainment/Unclassifiable.
Issaquena County...........................  ..............  Attainment/Unclassifiable.
Itawamba County............................  ..............  Attainment/Unclassifiable.
Jackson County.............................  ..............  Attainment/Unclassifiable.
Jasper County..............................  ..............  Attainment/Unclassifiable.
Jefferson County...........................  ..............  Attainment/Unclassifiable.
Jefferson Davis County.....................  ..............  Attainment/Unclassifiable.
Jones County...............................  ..............  Attainment/Unclassifiable.
Kemper County..............................  ..............  Attainment/Unclassifiable.
Lafayette County...........................  ..............  Attainment/Unclassifiable.
Lamar County, MS...........................         9/12/16  Attainment/Unclassifiable.
Lauderdale County..........................  ..............  Attainment/Unclassifiable.
Lawrence County............................  ..............  Attainment/Unclassifiable.
Leake County...............................  ..............  Attainment/Unclassifiable.
Lee County.................................  ..............  Attainment/Unclassifiable.
Leflore County.............................  ..............  Attainment/Unclassifiable.
Lincoln County.............................  ..............  Attainment/Unclassifiable.
Lowndes County.............................  ..............  Attainment/Unclassifiable.
Madison County.............................  ..............  Attainment/Unclassifiable.
Marion County..............................  ..............  Attainment/Unclassifiable.
Marshall County............................  ..............  Attainment/Unclassifiable.
Monroe County..............................  ..............  Attainment/Unclassifiable.
Montgomery County..........................  ..............  Attainment/Unclassifiable.
Neshoba County.............................  ..............  Attainment/Unclassifiable.
Newton County..............................  ..............  Attainment/Unclassifiable.
Noxubee County.............................  ..............  Attainment/Unclassifiable.
Oktibbeha County...........................  ..............  Attainment/Unclassifiable.

Panola County..............................  ..............  Attainment/Unclassifiable.
Pearl River County.........................  ..............  Attainment/Unclassifiable.
Perry County...............................  ..............  Attainment/Unclassifiable.
Pike County................................  ..............  Attainment/Unclassifiable.
Pontotoc County............................  ..............  Attainment/Unclassifiable.
Prentiss County............................  ..............  Attainment/Unclassifiable.
Quitman County.............................  ..............  Attainment/Unclassifiable.
Rankin County..............................  ..............  Attainment/Unclassifiable.
Scott County...............................  ..............  Attainment/Unclassifiable.
Sharkey County.............................  ..............  Attainment/Unclassifiable.
Simpson County.............................  ..............  Attainment/Unclassifiable.
Smith County...............................  ..............  Attainment/Unclassifiable.
Stone County...............................  ..............  Attainment/Unclassifiable.
Sunflower County...........................  ..............  Attainment/Unclassifiable.
Tallahatchie County........................  ..............  Attainment/Unclassifiable.
Tate County................................  ..............  Attainment/Unclassifiable.
Tippah County..............................  ..............  Attainment/Unclassifiable.
Tishomingo County..........................  ..............  Attainment/Unclassifiable.
Tunica County..............................  ..............  Attainment/Unclassifiable.
Union County...............................  ..............  Attainment/Unclassifiable.
Walthall County............................  ..............  Attainment/Unclassifiable.
Warren County..............................  ..............  Attainment/Unclassifiable.
Washington County..........................  ..............  Attainment/Unclassifiable.
Wayne County...............................  ..............  Attainment/Unclassifiable.
Webster County.............................  ..............  Attainment/Unclassifiable.
Wilkinson County...........................  ..............  Attainment/Unclassifiable.
Winston County.............................  ..............  Attainment/Unclassifiable.
Yalobusha County...........................  ..............  Attainment/Unclassifiable.
Yazoo County...............................  ..............  Attainment/Unclassifiable.
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is April 9, 2018, unless otherwise noted.

* * * * *

0
27. Section 81.326 is amended by revising the table entitled
``Missouri--2010 Sulfur Dioxide NAAQS (Primary)'' to read as follows:

Sec.  81.326  Missouri.

* * * * *

                                  Missouri--2010 Sulfur Dioxide NAAQS (Primary)
----------------------------------------------------------------------------------------------------------------
                                                                         Designation
            Designated area 1 3             --------------------------------------------------------------------
                                                Date \2\                             Type
----------------------------------------------------------------------------------------------------------------
Jackson County, MO.........................         10/4/13  Nonattainment.
    Jackson County (part)
        The portion of Jackson County
         bounded by I-70/I-670 and the
         Missouri River to the north; and,
         to the west of I-435 to the state
         line separating Missouri and
         Kansas.
Jefferson County, MO.......................         10/4/13  Nonattainment.

    Jefferson County (part)
        That portion within Jefferson
         County described by connecting the
         following four sets of UTM
         coordinates moving in a clockwise
         manner:
            (Herculaneum USGS Quadrangle)
            718360.283 4250477.056
            729301.869 4250718.415
            729704.134 4236840.30
            718762.547 4236558.715
            (Festus USGS Quadrangle)
            718762.547 4236558.715
            729704.134 4236840.30
            730066.171 4223042.637
            719124.585 4222680.6
            (Selma USGS Quadrangle)
            729704.134 4236840.30
            730428.209 4236840.3
            741047.984 4223283.996
            730066.171 4223042.637
            (Valmeyer USGS Quadrangle)
            729301.869 4250718.415
            731474.096 4250798.868
            730428.209 4236840.3
            729704.134 4236840.30
Franklin-St. Charles Counties, MO..........         9/12/16  Unclassifiable.
    Franklin County (part)
        The eastern and western boundaries
         are Boles Township boundaries. The
         northern boundary is the Franklin
         County-St. Charles County Line.
         The southern boundary is
         Interstate 44.
    St. Charles County (part)
        The eastern and western boundaries
         are Boone Township boundaries. The
         northern boundary is Missouri
         Route D and Highway 94. The
         southern boundary is the Franklin
         County-St. Charles County Line.
Jackson County, MO.........................         9/12/16  Unclassifiable.
    Jackson County (part)
        The northern boundary is the county
         line separating Jackson County
         from Clay and Ray Counties. The
         eastern boundary is the county
         line separating Jackson County
         from Lafayette County. The
         southern boundary is Interstates
         70 and 470. The western boundary
         is Missouri Highway 291.
Adair County...............................  ..............  Attainment/Unclassifiable.
Andrew County..............................  ..............  Attainment/Unclassifiable.
Atchison County............................  ..............  Attainment/Unclassifiable.
Audrain County.............................  ..............  Attainment/Unclassifiable.
Barry County...............................  ..............  Attainment/Unclassifiable.
Barton County..............................  ..............  Attainment/Unclassifiable.
Bates County...............................  ..............  Attainment/Unclassifiable.
Benton County..............................  ..............  Attainment/Unclassifiable.
Bollinger County...........................  ..............  Attainment/Unclassifiable.
Boone County...............................  ..............  Attainment/Unclassifiable.
Buchanan County............................  ..............  Attainment/Unclassifiable.
Butler County..............................  ..............  Attainment/Unclassifiable.
Caldwell County............................  ..............  Attainment/Unclassifiable.
Callaway County............................  ..............  Attainment/Unclassifiable.
Camden County..............................  ..............  Attainment/Unclassifiable.
Cape Girardeau County......................  ..............  Attainment/Unclassifiable.
Carroll County.............................  ..............  Attainment/Unclassifiable.
Carter County..............................  ..............  Attainment/Unclassifiable.
Cass County................................  ..............  Attainment/Unclassifiable.
Cedar County...............................  ..............  Attainment/Unclassifiable.
Chariton County............................  ..............  Attainment/Unclassifiable.
Christian County...........................  ..............  Attainment/Unclassifiable.
Clark County...............................  ..............  Attainment/Unclassifiable.
Clay County................................  ..............  Attainment/Unclassifiable.
Clinton County.............................  ..............  Attainment/Unclassifiable.
Cole County................................  ..............  Attainment/Unclassifiable.
Cooper County..............................  ..............  Attainment/Unclassifiable.
Crawford County............................  ..............  Attainment/Unclassifiable.
Dade County................................  ..............  Attainment/Unclassifiable.
Dallas County..............................  ..............  Attainment/Unclassifiable.
Daviess County.............................  ..............  Attainment/Unclassifiable.
DeKalb County..............................  ..............  Attainment/Unclassifiable.

Dent County................................  ..............  Attainment/Unclassifiable.
Douglas County.............................  ..............  Attainment/Unclassifiable.
Dunklin County.............................  ..............  Attainment/Unclassifiable.
Franklin County (part) (remainder).........  ..............  Attainment/Unclassifiable.
Gasconade County...........................  ..............  Attainment/Unclassifiable.
Gentry County..............................  ..............  Attainment/Unclassifiable.
Greene County..............................  ..............  Attainment/Unclassifiable.
Grundy County..............................  ..............  Attainment/Unclassifiable.
Harrison County............................  ..............  Attainment/Unclassifiable.
Henry County...............................  ..............  Attainment/Unclassifiable.
Hickory County.............................  ..............  Attainment/Unclassifiable.
Holt County................................  ..............  Attainment/Unclassifiable.
Howard County..............................  ..............  Attainment/Unclassifiable.
Howell County..............................  ..............  Attainment/Unclassifiable.
Jackson County (part) (remainder)..........  ..............  Attainment/Unclassifiable.
Jasper County..............................  ..............  Attainment/Unclassifiable.
Jefferson County (part) (remainder)........  ..............  Attainment/Unclassifiable.
Johnson County.............................  ..............  Attainment/Unclassifiable.
Knox County................................  ..............  Attainment/Unclassifiable.
Laclede County.............................  ..............  Attainment/Unclassifiable.
Lafayette County...........................  ..............  Attainment/Unclassifiable.
Lawrence County............................  ..............  Attainment/Unclassifiable.
Lewis County...............................  ..............  Attainment/Unclassifiable.
Lincoln County.............................  ..............  Attainment/Unclassifiable.
Linn County................................  ..............  Attainment/Unclassifiable.
Livingston County..........................  ..............  Attainment/Unclassifiable.
Macon County...............................  ..............  Attainment/Unclassifiable.
Madison County.............................  ..............  Attainment/Unclassifiable.
Maries County..............................  ..............  Attainment/Unclassifiable.
Marion County..............................  ..............  Attainment/Unclassifiable.
McDonald County............................  ..............  Attainment/Unclassifiable.
Mercer County..............................  ..............  Attainment/Unclassifiable.
Miller County..............................  ..............  Attainment/Unclassifiable.
Mississippi County.........................  ..............  Attainment/Unclassifiable.
Moniteau County............................  ..............  Attainment/Unclassifiable.
Monroe County..............................  ..............  Attainment/Unclassifiable.
Montgomery County..........................  ..............  Attainment/Unclassifiable.
Morgan County..............................  ..............  Attainment/Unclassifiable.
Newton County..............................  ..............  Attainment/Unclassifiable.
Nodaway County.............................  ..............  Attainment/Unclassifiable.
Oregon County..............................  ..............  Attainment/Unclassifiable.
Osage County...............................  ..............  Attainment/Unclassifiable.
Ozark County...............................  ..............  Attainment/Unclassifiable.
Pemiscot County............................  ..............  Attainment/Unclassifiable.
Perry County...............................  ..............  Attainment/Unclassifiable.
Pettis County..............................  ..............  Attainment/Unclassifiable.
Phelps County..............................  ..............  Attainment/Unclassifiable.
Pike County................................  ..............  Attainment/Unclassifiable.
Platte County..............................  ..............  Attainment/Unclassifiable.
Polk County................................  ..............  Attainment/Unclassifiable.
Pulaski County.............................  ..............  Attainment/Unclassifiable.
Putnam County..............................  ..............  Attainment/Unclassifiable.
Ralls County...............................  ..............  Attainment/Unclassifiable.
Randolph County............................  ..............  Attainment/Unclassifiable.
Ray County.................................  ..............  Attainment/Unclassifiable.
Reynolds County............................  ..............  Attainment/Unclassifiable.
Ripley County..............................  ..............  Attainment/Unclassifiable.
St. Charles County (part) (remainder)......  ..............  Attainment/Unclassifiable.
St. Clair County...........................  ..............  Attainment/Unclassifiable.
St. Francois County........................  ..............  Attainment/Unclassifiable.
Ste. Genevieve County......................  ..............  Attainment/Unclassifiable.
St. Louis City.............................  ..............  Attainment/Unclassifiable.
St. Louis County...........................  ..............  Attainment/Unclassifiable.
Saline County..............................  ..............  Attainment/Unclassifiable.
Schuyler County............................  ..............  Attainment/Unclassifiable.
Scotland County............................  ..............  Attainment/Unclassifiable.
Scott County...............................         9/12/16  Attainment/Unclassifiable.
Shannon County.............................  ..............  Attainment/Unclassifiable.
Shelby County..............................  ..............  Attainment/Unclassifiable.
Stoddard County............................  ..............  Attainment/Unclassifiable.

Stone County...............................  ..............  Attainment/Unclassifiable.
Sullivan County............................  ..............  Attainment/Unclassifiable.
Taney County...............................  ..............  Attainment/Unclassifiable.
Texas County...............................  ..............  Attainment/Unclassifiable.
Vernon County..............................  ..............  Attainment/Unclassifiable.
Warren County..............................  ..............  Attainment/Unclassifiable.
Washington County..........................  ..............  Attainment/Unclassifiable.
Wayne County...............................  ..............  Attainment/Unclassifiable.
Webster County.............................  ..............  Attainment/Unclassifiable.
Worth County...............................  ..............  Attainment/Unclassifiable.
Wright County..............................  ..............  Attainment/Unclassifiable.
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is April 9, 2018, unless otherwise noted.
\3\ Iron and New Madrid Counties will be designated by December 31, 2020.

* * * * *

0
28. Section 81.327 is amended by revising the table titled ``Montana--
2010 Sulfur Dioxide NAAQS (Primary) to read as follows:

Sec.  81.327  Montana.

* * * * *

                                  Montana--2010 Sulfur Dioxide NAAQS (Primary)
----------------------------------------------------------------------------------------------------------------
                                                                         Designation
            Designated area \1\             --------------------------------------------------------------------
                                                Date \2\                             Type
----------------------------------------------------------------------------------------------------------------
Yellowstone County (part)..................         5/10/16  Attainment.
    The area originates at the point
     defined as the southwest corner of
     Section 11, Township 1S, Range 26E.
     From that point the boundary proceeds
     north along the western section line
     of Section 11 to the point of
     intersection with the midline of
     Interstate Highway 90. From that point
     the boundary follows the midline of
     Interstate Highway 90, across the
     Yellowstone River, to the point where
     the highway midline intersects the
     northern boundary of Section 35,
     Township 1N, Range 26E. From that
     point the boundary proceeds east along
     the northern section line of Sections
     35 and 36 to the point where Old US 87/
     Hardin Road leaves the section line
     and turns southeast. The boundary
     follows the midline of Old US 87/
     Hardin Road southeast to the point
     where the road intersects the western
     boundary of the SE \1/4\ of the SE \1/
     4\ of Section 31, Township 1N, Range
     27E. From that point the boundary
     proceeds south along the \1/4\ section
     line to the southern boundary of
     Township 1N, then east to the
     northeast corner of Section 5,
     Township 1S, Range 27E. The boundary
     then proceeds south along the eastern
     section line of sections 5 and 8 to
     the southeast corner of Section 8,
     Township 1S, Range 27E, where it turns
     west and follows the south section
     line of Sections 8 and 7, Township 1S,
     Range 27E; and Sections 12 and 11,
     Township 1S, Range 26E, back to the
     point of origin.
Beaverhead County..........................  ..............  Attainment/Unclassifiable.
Big Horn County............................  ..............  Attainment/Unclassifiable.
Blaine County..............................  ..............  Attainment/Unclassifiable.
Broadwater County..........................  ..............  Attainment/Unclassifiable.
Carbon County..............................  ..............  Attainment/Unclassifiable.
Carter County..............................  ..............  Attainment/Unclassifiable.
Cascade County.............................  ..............  Attainment/Unclassifiable.
Chouteau County............................  ..............  Attainment/Unclassifiable.
Custer County..............................  ..............  Attainment/Unclassifiable.
Daniels County.............................  ..............  Attainment/Unclassifiable.
Dawson County..............................  ..............  Attainment/Unclassifiable.
Deer Lodge County..........................  ..............  Attainment/Unclassifiable.
Fallon County..............................  ..............  Attainment/Unclassifiable.
Fergus County..............................  ..............  Attainment/Unclassifiable.
Flathead County............................  ..............  Attainment/Unclassifiable.
Gallatin County............................  ..............  Attainment/Unclassifiable.
Garfield County............................  ..............  Attainment/Unclassifiable.
Glacier County.............................  ..............  Attainment/Unclassifiable.
Golden Valley County.......................  ..............  Attainment/Unclassifiable.
Granite County.............................  ..............  Attainment/Unclassifiable.
Hill County................................  ..............  Attainment/Unclassifiable.
Jefferson County...........................  ..............  Attainment/Unclassifiable.
Judith Basin County........................  ..............  Attainment/Unclassifiable.

Lake County................................  ..............  Attainment/Unclassifiable.
Lewis and Clark County.....................  ..............  Attainment/Unclassifiable.
Liberty County.............................  ..............  Attainment/Unclassifiable.
Lincoln County.............................  ..............  Attainment/Unclassifiable.
McCone County..............................  ..............  Attainment/Unclassifiable.
Madison County.............................  ..............  Attainment/Unclassifiable.
Meagher County.............................  ..............  Attainment/Unclassifiable.
Mineral County.............................  ..............  Attainment/Unclassifiable.
Missoula County............................  ..............  Attainment/Unclassifiable.
Musselshell County.........................  ..............  Attainment/Unclassifiable.
Park County................................  ..............  Attainment/Unclassifiable.
Petroleum County...........................  ..............  Attainment/Unclassifiable.
Phillips County............................  ..............  Attainment/Unclassifiable.
Pondera County.............................  ..............  Attainment/Unclassifiable.
Powder River County........................  ..............  Attainment/Unclassifiable.
Powell County..............................  ..............  Attainment/Unclassifiable.
Prairie County.............................  ..............  Attainment/Unclassifiable.
Ravalli County.............................  ..............  Attainment/Unclassifiable.
Richland County............................  ..............  Attainment/Unclassifiable.
Roosevelt County...........................  ..............  Attainment/Unclassifiable.
Rosebud County.............................  ..............  Attainment/Unclassifiable.
Sanders County.............................  ..............  Attainment/Unclassifiable.
Sheridan County............................  ..............  Attainment/Unclassifiable.
Silver Bow County..........................  ..............  Attainment/Unclassifiable.
Stillwater County..........................  ..............  Attainment/Unclassifiable.
Sweet Grass County.........................  ..............  Attainment/Unclassifiable.
Teton County...............................  ..............  Attainment/Unclassifiable.
Toole County...............................  ..............  Attainment/Unclassifiable.
Treasure County............................  ..............  Attainment/Unclassifiable.
Valley County..............................  ..............  Attainment/Unclassifiable.
Wheatland County...........................  ..............  Attainment/Unclassifiable.
Wibaux County..............................  ..............  Attainment/Unclassifiable.
Yellowstone County (part) (remainder)......  ..............  Attainment/Unclassifiable.
----------------------------------------------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise specified. EPA is not determining the
  boundaries of any area of Indian country in this table, including any area of Indian country located in the
  larger designation area. The inclusion of any Indian country in the designation area is not a determination
  that the state has regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is April 9, 2018, unless otherwise noted.

* * * * *

0
29. Section 81.328 is amended by revising the table entitled
``Nebraska--2010 Sulfur Dioxide NAAQS (Primary)'' to read as follows:

Sec.  81.328  Nebraska.

* * * * *

              Nebraska--2010 Sulfur Dioxide NAAQS (Primary)
------------------------------------------------------------------------
                                               Designation
      Designated area 1 3       ----------------------------------------
                                    Date \2\               Type
------------------------------------------------------------------------
Lancaster County...............         9/12/16  Unclassifiable.
Statewide:.....................  ..............  Attainment/
                                                  Unclassifiable.
    Adams County...............
    Antelope County............
    Arthur County..............
    Banner County..............
    Blaine County..............
    Boone County...............
    Box Butte County...........
    Boyd County................
    Brown County...............
    Buffalo County.............
    Burt County................
    Butler County..............
    Cass County................
    Cedar County...............
    Chase County...............
    Cherry County..............
    Cheyenne County............

    Clay County................
    Colfax County..............
    Cuming County..............
    Custer County..............
    Dakota County..............
    Dawes County...............
    Dawson County..............
    Deuel County...............
    Dixon County...............
    Dodge County...............
    Dundy County...............
    Fillmore County............
    Franklin County............
    Frontier County............
    Furnas County..............
    Gage County................
    Garden County..............
    Garfield County............
    Gosper County..............
    Grant County...............
    Greeley County.............
    Hall County................
    Hamilton County............
    Harlan County..............
    Hayes County...............
    Hitchcock County...........
    Holt County................
    Hooker County..............
    Howard County..............
    Jefferson County...........
    Johnson County.............
    Kearney County.............
    Keith County...............
    Keya Paha County...........
    Kimball County.............
    Knox County................
    Lincoln County.............         9/12/16  Attainment/
                                                  Unclassifiable.
    Logan County...............
    Loup County................
    Madison County.............
    McPherson County...........
    Merrick County.............
    Morrill County.............
    Nance County...............
    Nemaha County..............
    Nuckolls County............
    Otoe County................         9/12/16  Attainment/
                                                  Unclassifiable.
    Pawnee County..............
    Perkins County.............
    Phelps County..............
    Pierce County..............
    Platte County..............
    Polk County................
    Red Willow County..........
    Richardson County..........
    Rock County................
    Saline County..............
    Sarpy County...............
    Saunders County............
    Scotts Bluff County........
    Seward County..............
    Sheridan County............
    Sherman County.............
    Sioux County...............
    Stanton County.............
    Thayer County..............
    Thomas County..............
    Thurston County............

    Valley County..............
    Washington County..........
    Wayne County...............
    Webster County.............
    Wheeler County.............
    York County................
------------------------------------------------------------------------
\1\ Includes any Indian country in each county or area, unless otherwise
  specified. EPA is not determining the boundaries of any area of Indian
  country in this table, including any area of Indian country located in
  the larger designation area. The inclusion of any Indian country in
  the designation area is not a determination that the state has
  regulatory authority under the Clean Air Act for such Indian country.
\2\ This date is April 9, 2018, unless otherwise noted.
\3\ Douglas County will be designated by December 31, 2020.

* * * * *

0
30. Section 81.329 is amended by adding a table entitled ``Nevada--2010
Sulfur Dioxide NAAQS (Primary)'' following the table ``Nevada--1971
Sulfur Dioxide NAAQS (Primary and Secondary)'' to read as follows:

Sec.  81.329  Nevada.

* * * * *

                                   Nevada--2010 Sulfur Dioxide NAAQS (Primary)
----------------------------------------------------------------------------------------------------------------
                                                                         Designation
            Designated area \1\             --------------------------------------------------------------------
                                                Date \2\                             Type