2011 Air Quality Indicators
Mecklenburg County, North Carolina
Mecklenburg County Air Quality (MCAQ) presents the list of environmental indicators for
calendar year 2011 below that give information about the air quality in Mecklenburg County as well as
programmatic activities. Environmental indicators are scientifically-based measures that tell us what is happening
in our environment. Since the environment is complex, indicators provide a practical and economical way to track
the state of the environment. By monitoring the environment using indicators, Mecklenburg County Air Quality
(MCAQ) can better share environmental information with the public and can make better environmental decisions.
Air Quality Index Days
Program Activity Levels
Good (Green Days)
259
Moderate (Yellow Days)
Unhealthy for Sensitive Groups (Orange Days)
89
17
Citizen Requests for Service
34
NESHAP Inspections ("Asbestos Removals")
425
Permits Issued
118
Unhealthy (Red Days)
0
Permit Applicability Determinations
131
Very Unhealthy (Purple Days)
0
Stationary Source Inspections Conducted
319
Days Over the National Ambient Standard
Permitted Stationary Sources
Ozone: 1 hour
0
Ozone: 8 hour
17
0
Carbon Monoxide
Major (Title V)
Minor
221
Stage I (Gasoline Stations)
316
Air Pollution Source Violations
Particulate Matter < 10 microns (PM10)
0
Particulate Matter < 2.5 microns (PM2.5)
0
Nitrogen Oxide
0
Applicability
Sulfur Dioxide
0
Emission Standards
Air Pollution* (tons/year): CY 2010
11
Recordkeeping
29
7
33
Dust, Odor, VE
Carbon Monoxide (CO)
214,400
4
Mobile Source Data
Volatile Organic Compounds (VOC)
24,250
Registered Vehicles
Nitrogen Oxides (NOx)
19,570
Vehicle Miles Traveled per Day
692,484
Sulfur Dioxide (SO2)
1,723
Mass Transit Average Daily Ridership
Particulate Matter (PM2.5)
1,290
Permitted Transportation Facilities
*Emissions from stationary, area & mobile sources
32,385,513
82,365
36
Ambient Monitoring
Toxics (TAPS/HAPS)**
920
** 2008 toxic emissions from stationary & on-road mobile
sources
Number of Sites
6
Number of Monitors Operated
30
Number of Measurements/Year
Health
Effects
Air Quality
Data
Pollution
Sources
Stationary
Sources
Area
Sources
Mobile
Sources
Ambient
Monitoring
112,579
Indoor Air
Quality
Helping you breathe easy … for life
Mecklenburg County Air Quality • 700 North Tryon Street • Charlotte, NC 28202 • 704.336.5430
http://airquality.charmeck.org