Table1a. NAA Status 8hr 2008



### AQS Data Retrieval: 6/24/2014

Designated Area EPA Region(s)Designation

Status1 Classification12011-2013 Design Value (ppm)2,3 Meets

NAAQS?Most Recent

Attainment
Determination

Action5Redesignation

FR Effective
Date Allentown-Bethlehem-Easton, PA 3 Nonattainment Marginal 0.074 Yes Atlanta, GA 4Nonattainment Marginal 0.080 No Baltimore, MD 3 Nonattainment Moderate 0.085 No Baton Rouge, LA 6Nonattainment Marginal 0.075 Yes 6/16/2014 Calaveras County, CA 9Nonattainment Marginal 0.072 Yes Charlotte-Gastonia-Rock Hill, NC-SC 4Nonattainment Marginal 0.078 No Chicago-Naperville, IL-IN-WI 5 Nonattainment Marginal 0.082 No Chico (Butte County), CA 9Nonattainment Marginal 0.075 Yes Cincinnati, OH-KY-IN 4,5Nonattainment Marginal 0.081 No Cleveland-Akron-Lorain, OH 5 Nonattainment Marginal 0.080 No Columbus, OH 5 Nonattainment Marginal 0.080 No Dallas-Fort Worth, TX 6Nonattainment Moderate 0.087 No Denver-Boulder-Greeley-Fort Collins-Loveland, CO 8 Nonattainment Marginal 0.083 No Dukes County, MA 1 Nonattainment Marginal 0.075 Yes Greater Connecticut, CT 1 Nonattainment Marginal 0.084 No Houston-Galveston-Brazoria, TX 6Nonattainment Marginal 0.087 No Imperial County, CA 9Nonattainment Marginal 0.082 No Jamestown, NY 2Nonattainment Marginal 0.072 Yes Kern County (Eastern Kern), CA 9Nonattainment Marginal 0.081 No Knoxville, TN 4Nonattainment Marginal 0.074 Yes Lancaster, PA 3 Nonattainment Marginal 0.075 Yes Los Angeles & San Bernardino Counties (W Mojave), CA 9Nonattainment Severe 0.092 No Los Angeles South Coast Air Basin, CA 9Nonattainment Extreme 0.107 No Mariposa County, CA 9Nonattainment Marginal 0.078 No Memphis, TN-MS-AR 4,6Nonattainment Marginal 0.078 No Morongo Indian Reservation, CA 9Nonattainment Serious 0.101 No Nevada County (Western part), CA 9Nonattainment Marginal 0.077 No New York-N. New Jersey-Long Island, NY-NJ-CT 1,2Nonattainment Marginal 0.089 No Pechanga Indian Reservation, CA 9Nonattainment Moderate 0.077 No Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE 2,3Nonattainment Marginal 0.084 No Phoenix-Mesa, AZ 9Nonattainment Marginal 0.081 No Pittsburgh-Beaver Valley, PA 3 Nonattainment Marginal 0.080 No 

### Table 1a. Design Values in Areas Previously Designated Nonattainment for the 2008 8-Hour Ozone NAAQS Last Updated: 8/1/2014

Page 1Table1a. NAA Status 8hr 2008

Reading, PA 3 Nonattainment Marginal 0.073 Yes Riverside County (Coachella Valley), CA 9Nonattainment Severe 0.092 No Sacramento Metro, CA 9Nonattainment Severe 0.090 No San Diego County, CA 9Nonattainment Marginal 0.080 No San Francisco Bay Area, CA 9Nonattainment Marginal 0.071 Yes San Joaquin Valley, CA 9Nonattainment Extreme 0.094 No4 San Luis Obispo County (Eastern part), CA 9Nonattainment Marginal 0.077 No Seaford, DE 3 Nonattainment Marginal 0.077 No Sheboygan, WI 5 Nonattainment Marginal 0.085 No St. Louis-St. Charles-Farmington, MO-IL 5,7Nonattainment Marginal 0.082 No Tuscan Buttes, CA 9Nonattainment Marginal 0.074 Yes Uinta Basin, UT 8 UnclassifiableUnclassifiable 0.068 See footnote 6 Upper Green River Basin, WY 8 Nonattainment Marginal 0.076 No Ventura County, CA 9Nonattainment Serious 0.079 No Washington, DC-MD-VA 3 Nonattainment Marginal 0.081 No

6. The Uinta Basin, UT area was designated "unclassifiable" based on incomplete data which showed a potential violation of the 2008 8-hour ozone NAAQS. Although a design value meeting the NAAQS is listed for this area, there are other monitors in the area with incomplete data which continue to show potential NAAQS violations. Thus, EPA cannot make a determination of whether this area meets the NAAQS at this time. 5. Most recent EPA action to determine that either 1) the area has attained the standard by its applicable attainment deadline under section 181(b) of the Clean Air Act, or 2) the area has attained the standard under the Clean Data Policy (known informally as a Clean Data Determination). 1. Area designation status and classification as of June 24, 2014.

2. The level of the 2008 8-hour ozone NAAQS is 0.075 parts per million (ppm). The design value is the 3-year average of the annual 4th highest daily maximum 8-hour ozone concentration. The design value listed for each area is the highest among monitors with valid design values.

3. The design values shown here are computed using Federal Reference Method or equivalent data reported by State, Tribal, and Local monitoring agencies to EPA's Air Quality System (AQS) as of June 24, 2014. Concentrations flagged by State, Tribal, or Local monitoring agencies as having been affected by an exceptional event (e.g., wildfire, volcanic eruption) and concurred by the associated EPA Regional Office are not included in these calculations.

4. One or more sites in this area has violated the NAAQS prior to 2011-2013, and does not have a valid 2011-2013 design value. Therefore, the nonattainment area may not have a valid design value for some purposes. Although a 2011-2013 design value is shown, this design value may not represent the worst 2011-2013 air quality in the area. Consequently, we have not used it to indicate "Yes" or "No" in the "Meets NAAQS?" column, unless there are other sites in the area which show violations. Notes:

Page 2Table1a. NAA Status 8hr 2008

Disclaimer: The information listed in this report and in these tables is intended for informational use only and does not constitute a regulatory determination by EPA as whether an area has attained a NAAQS. The information set forth in this report has no regulatory effect. To have regulatory effect, a final EPA determination as to whether an area has attained a NAAQS or attained a NAAQS as of its applicable attainment date can be accomplished only after rulemaking that provides an opportunity for notice and comment. No such determination for regulatory purposes exists in the absence of such rulemaking. This report does not constitute a proposed or final rulemaking.

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