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Air Quality Technical Projects
Conceptual Models

The conceptual model is used to determine air quality trends, meteorological patterns, precursor emissions, and ozone transport during high ozone events. These analyses help identify appropriate high ozone events for evaluating the effects of ozone control measures during the photochemical modeling process.

2012: Conceptual Model: Ozone Analysis of the San Antonio Region Updates through Year 2010
2011: Conceptual Model: Ozone Analysis of the San Antonio Region Updates through Year 2009

Ambient Monitoring Projects
AACOG operates six continuous air monitoring stations to measure ground-level ozone and collect related information in the region. Data collected by AACOG’s instruments as well as data collected by the state and other agencies for the Alamo region are reported by the Texas Commission on Environmental Quality monitoring operations website.

Profiler Data
For the TexAQS-II study, and to support local modeling efforts in San Antonio and Austin, Texas, Sonoma Technology, Inc. operated a 915-MHz radar wind profiler (RWP), Radio Acoustic Sounding System (RASS), and surface meteorological station at the New Braunfels Municipal Airport. These operations were funded by the Capitol Area Council of Governments, the Alamo Area Council of Governments, and the Texas Commission on Environmental Quality during instrument operations from July 3 through December 31, 2005, and June, August, September, and the first two weeks of October 2006. In addition, STI operated the instruments from January 1 through May 31, 2006, and July 2006, although these operations were not official and unfunded. The "Summary of the New Braunfels 2005 and 2006 Radar Profiler Operations and Data Availability" is the final report and summarizes the operations, subjective quality control of data collected by the RWP, RASS, and 10-m surface meteorological tower, and the estimation of mixing heights for the site at the New Braunfels Municipal Airport.

Emission Inventory Improvements
AACOG’s emission inventories quantify nitrogen oxides (NOx) and volatile organic compounds (VOCs) generated by a range of sources in the 12-county region. NOx and VOCs combine in sunlight to form ground-level ozone - the primary component of smog. Burning fuels such as gasoline, diesel, and coal generate NOx. VOCs are often released in the air through evaporative processes from such products as gasoline, paints, and solvents.

2012

2011
2010
2008
  • 2005 Emissions Inventories
2004
  • 2002 Emissions Inventories

Eagle Ford Emissions Inventory
Oil and Gas Emission Inventory Improvement Plan, Eagle Ford (dated August 1st, 2012; Word Version)
Oil and Gas Emission Inventory Improvement Plan, Eagle Ford (dated August 1st, 2012; PDF Version)

Oil and Gas Emission Inventory, Eagle Ford Shale; Final Technical Report (Word Version)
Oil and Gas Emission Inventory, Eagle Ford Shale; Final Technical Report (PDF Version)
AACOG Draft Finalized November 30th, 2013; Accepted as Final by TCEQ: April 4th, 2014

Quality Assurance Project Plan (QAPP) for the FY 2014-2015 Update to the Oil and Gas Emission Inventory, Eagle Ford Shale (Dated March 20th, 2014; Word Version)
Quality Assurance Project Plan (QAPP) for the FY 2014-2015 Update to the Oil and Gas Emission Inventory, Eagle Ford Shale (Dated March 20th, 2014; PDF Version)

Eagle Ford Emissions Inventory Group (EFEIG) Meeting - July 2, 2013 - Meeting Materials
Agenda: Eagle Ford Emissions Inventory Group Workshop #3, July 2, 2013
Status of the Eagle Ford Emission Inventory and AACOG’s Photochemical Model - Powerpoint (PDF)
Texas Emission Reduction Plan (TERP) & SB 1727 - Powerpoint (PDF)
Update: Texas A&M University rig study

Eagle Ford Emissions Inventory Group (EFEIG) Meeting - May 21, 2012
Agenda: Eagle Ford Emissions Inventory Workshop #1, May 21, 2012

Photochemical Modeling Reports
Development of the Extended June 2006 Photochemical Modeling Episode (Word Document; 47 MB)
Development of the Extended June 2006 Photochemical Modeling Episode (PDF Document; 31 MB)

Trend Analysis
Emissions Trend Analysis for the San Antonio-New Braunfels MSA: 1999, 2002, 2006, 2012, 2018, and 2023 (Word)
Emissions Trend Analysis for the San Antonio-New Braunfels MSA: 1999, 2002, 2006, 2012, 2018, and 2023 (PDF)

Control Strategies
AACOG researches, identifies, and quantities air quality benefits of control strategies implemented by local organizations and entities in the region.

2012: Strategy Effectiveness Analysis
2010:
Strategy Effectiveness Analysis

Learn more about AACOG’s role in Texas’ Rider 8 Air Quality Planning Program