History of St Louis Air Pollution NASA Air

History of St. Louis Air Pollution NASA Air Quality Applied Sciences Team June 2, 2015

Presentation Overview St. Louis Air Quality l Gateway’s Ozone Data Sharing Project l Trends l

St. Louis Ozone History Year Action 1991 Moderate Non-Attainment for 1979 1 -Hour Ozone Standard 2002 Designated Attainment for 1979 1 -Hour Ozone Standard 2004 Moderate Non-Attainment for 1997 8 -Hour Ozone Standard, including Jersey County IL June 2012 Illinois Counties Designated Attainment for 1997 8 -Hour Ozone Standard July 2012 Marginal Non-Attainment for 2008 8 -Hour Ozone Standard February 2015 Missouri Counties Designated Attainment for 1997 8 -Hour Ozone Standard

St. Louis PM 2. 5 History Year Action 2005 Non-Attainment for 1997 Annual PM 2. 5 Standard, including Baldwin Township, Randolph County IL 2009 Attainment 1997 24 -Hour PM 2. 5 Standard 2015 Unclassifiable for 2012 Annual PM 2. 5 Standard

St. Louis (MO-IL) Non-Attainment Areas Ozone 1997 PM 2. 5

2008 Ozone Standard 75 parts per billion (ppb) l Exceedance is when an 8 -hour average of values at a monitor is calculated to be > 75 ppb on any given day l Violation is when a 3 -year average of the 4 th highest annual average at a monitor is calculated to be > 75 ppb l

Ozone Data Sharing Project Ozone Season - April 1 to October 31 l East-West Gateway acts as a clearinghouse for ozone data l Initial quality assurance screening l l Prepare reports

2014 Ozone Season 2 Ozone Days and 4 Exceedances l August 4 l – West Alton MO – Alton IL – Wood River IL l September 28 – Arnold West MO

Summer Weather Facts Days with Temperatures Years 2012 2013 2014 Average Number of Days per Year 90 0 or greater 60 37 34 36 1000 or greater 21 2 National Weather Service

3 Yr Average of 4 th Highest 8 -Hour Ozone Averages 1995 -2014

De Re com co mi ve ss ry ion s ali z ed I/M ap tai or lpi Re pe co ve ry ntr IV e. I II V OB D ag e I/M St ed liz tra ce n De sp an Ga ag ce De St RV P Tr w 89 84 or f tat o Ce rm ion nt ula Co ra ntr liz ted ed ol Ga Me I/M s as ur IM es 24 0 Re Lo 19 19 ap or 3 Year Average 4 th Highest 8 -Hr Ozone Average

Daily Vehicle Miles Traveled (VMT) St. Louis Region 1982 -2014

Projected Vehicle Emissions

Trends Moderate to Marginal – July 2012 l Anticipate attainment in 2015 l Revised ozone standard October 2015 l

Then and Now October 28, 1938 looking east along Pine from 200 block of N. Tucker St. Louis Post-Dispatch May 27, 2015 looking east from SSM St. Mary’s Health Center in Richmond Heights MDNR Visual Air Pollution Camera

For Additional Information On-line Air Quality Resource Center www. ewgateway. org/environment/aq/aq. htm August 2014 AQI Calendar

Questions? Michael Coulson, PE Manager, Environmental Services East-West Gateway Council of Governments Air Quality Resource Center www. ewgateway. org