Skip to content. | Skip to navigation

Personal tools

Navigation

Questions or Comments:
siprules@tceq.texas.gov
You are here: Home / Air Quality / SIP / Corpus Christi SIP / Corpus Christi: Current Attainment Status

Corpus Christi: Current Attainment Status

Compliance of Corpus Christi area counties with the National Ambient Air Quality Standards (NAAQS).

Corpus Christi Area: Attainment Status by Pollutant

Pollutant

 

Primary NAAQS

 

Averaging Period

 

Designation

 

Counties

 

Attainment Deadline

Ozone (O3)*

0.075 ppm
(2008 standard)

8-hour

Attainment/ Unclassifiable

San Patricio, Nueces

 

0.08 ppm (1997 standard)

8-hour

Attainment/ Unclassifiable

San Patricio, Nueces

 

Lead (Pb)

0.15 µg/m3
(2008 standard)

Rolling 3-Month Average

Attainment/ Unclassifiable

 

 

1.5 µg/m3
(1978 standard)

Quarterly Average

Attainment/ Unclassifiable

 

 

Carbon Monoxide (CO)

9 ppm

8-hour

Attainment/ Unclassifiable

 

 

35 ppm

1-hour

Attainment/ Unclassifiable

 

 

Nitrogen Dioxide (NO2)

0.053 ppm

Annual

Attainment/ Unclassifiable

 

 

100 ppb

1-hour

Attainment/ Unclassifiable

 

 

Particulate Matter (PM10)

150 µg/m3

24-hour

Attainment/ Unclassifiable

 

 

Particulate Matter (PM2.5)

12.0 µg/m3(2012 standard)

Annual (Arithmetic Mean)

Pending

 

 

15.0 µg/m3(1997 standard)

Annual (Arithmetic Mean)

Attainment/ Unclassifiable

 

 

35 µg/m3

24-hour

Attainment/ Unclassifiable

 

 

Sulfur Dioxide (SO2)

0.03 ppm**

Annual (Arithmetic Mean)

Attainment/ Unclassifiable

 

 

0.14 ppm**

24-hour

Attainment/ Unclassifiable

 

 

75 ppb

1-hour

Governor's Recommendation: Attainment

Nueces

 

*The United States Environmental Protection Agency (EPA) revoked the one-hour ozone standard in all areas, although some areas have continuing obligations under the standard. See ozone history for more information.

**Standard will be revoked one year after the effective date of final designations for the 75 ppb standard.

Corpus Christi Attainment Areas

2008 Eight-Hour Ozone Standard Designation: Attainment/Unclassifiable, effective July 20, 2012 (77 FR 30088Exit the TCEQ  
On March 27, 2008, the EPA lowered the primary and secondary eight-hour ozone NAAQS to 0.075 parts per million (73 FR 16436). Exit the TCEQ San Patricio and Nueces Counties were designated attainment/unclassifiable under the 2008 eight-hour ozone NAAQS, effective July 20, 2012. 

1997 Eight-Hour Ozone Standard Designations:  Attainment/Unclassifiable, April 20, 2004 (69 FR 23858Exit the TCEQ
Counties: San Patricio, Nueces
Stakeholders in Nueces and San Patricio counties expressed a desire to develop an Ozone Flex (O3 Flex) program for the eight-hour ozone standard and sent a letter of intent to the EPA signed by the Mayor of Corpus Christi on October 4, 2004. In response to Corpus Christi’s initiative, the EPA issued national guidelines for the Eight-Hour O3 Flex Program on May 18, 2006, similar to the previous guidance for the One-Hour O3 Flex Program. The purpose of the program is to encourage eight-hour ozone attainment areas nationwide to reduce ozone emissions to continue to meet the NAAQS for ozone. All parties signed the five-year agreement in 2007.

National Ambient Air Quality Standards

The EPA has set National Ambient Air Quality Standards Exit the TCEQ(NAAQS) for six principal criteria pollutants: ground-level ozone, lead, carbon monoxide, nitrogen dioxide, sulfur dioxide, and particulate matter. 

No later than one year after promulgation of a new or revised NAAQS for any pollutant, the governor must submit designation recommendations to the EPA for all areas of the state. The EPA must then promulgate the designations within two years of promulgation of the revised NAAQS. Areas that do not meet (or contribute to ambient air quality in a nearby area that does not meet) the NAAQS are designated nonattainment. Areas that meet the NAAQS are designated attainment; and areas that cannot be classified based on the available information, unclassifiable.

For ozone, the Federal Clean Air Act establishes nonattainment-area classifications ranked according to the severity of the area’s air pollution problem. These classifications—marginal, moderate, serious, severe, and extreme—translate to varying requirements with which Texas and nonattainment areas must comply.