Mecklenburg County Air Quality Airwaves Newsletter

February 24, 2020


Air Compliance Excellence - Tips for Success!

Mecklenburg County Air Quality (MCAQ) wants you to be successful and have all the tools needed to comply with your air quality permit. To recognize and reward your effort, we issue Air Compliance Excellence or ACE Awards each August to those sites having sustained compliance for a 12-month period. We want to give you a well deserved pat on the back!

ACE award

At MCAQ’s November 21, 2019 Air Quality Forum, an industry panel made up of past ACE Award recipients gave these tips to attendees:

  1. Establish a system to remind you of important dates. Either use an Outlook calendar or paper note method to show report due dates, days to record monitoring values, etc.
  2. Have a backup plan. Assign backup personnel who can step in and take care of AQ compliance when your primary person is away.
  3. Have a copy of your air permit readily accessible. Always read through it each time one is issued to your facility.
  4. Be proactive and respond to potential complaint issues. Be on alert for offsite dust and odors. Be ready to respond, for example, keep haul roads at your facility’s entrance wet, pay attention to wind direction, etc.
  5. Stay in touch with MCAQ. You should try and attend MCAQ’s compliance workshops, the Annual Forum, and frequently check their website. There’s even a handy guide of tools HERE.
Compliance graph

Spring 2020 Compliance Workshop - What's Your Topic Choice?

Workshop survey


Mecklenburg County Air Quality is planning our 2020 Spring workshop and we want to know what topics interest you!  Please provide input.

Click here for the survey link.

MCAPCO Revisions


The Mecklenburg County Air Pollution Control Ordinance (MCAPCO) is the rule book for how MCAQ regulates emission sources in Mecklenburg County (see the complete ordinance: MCAPCO). In February 2020, MCAQ adopted recent revisions to state air quality rules for implementing the state’s toxic air pollutant program, and how MCAQ responds to odor and dust complaints from the public. The changes were the result of the North Carolina Department of Environmental Quality - Division of Air Quality’s Periodic Review of Existing Rules (PRER) process (see Group 3 and 4 rules here: PRER).

Moving forward, the state will complete its PRER process (Group 5 and 6 rules) by the end of 2020. MCAQ will adopt the revisions as they are completed by the state. If you’re interested in following future revisions to MCAPCO, you can sign-up on MCAQ’s website to receive an email notification (notify) each time changes are made to MCAPCO.

Ambient Air Monitoring Update

2019 data collected at air monitoring stations operated by MCAQ continue to demonstrate compliance with the National Ambient Air Quality Standards (NAAQS) for particulate matter (PM2.5 & PM10), carbon monoxide (CO), sulfur dioxide (SO2), nitrogen dioxide (NO2), and ozone (O3).

Ozone continues to be the pollutant of most concern. To comply with the NAAQS for ozone, an area’s O3 compliance value must be ≤ 70 ppb. The O3 compliance value for 2019 for Mecklenburg County is 70 ppb. Monitors operating in the county are meeting the standard but are just at the level of the NAAQS. For more information on NAAQS compliance in Mecklenburg County visit the Criteria Pollutants page on the MCAQ website.

Air Monitoring