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Air Quality Technical Reports

2016:

Photochemical Modeling: Quality Assurance Project Plan (QAPP) Dated January 25, 2016 (PDF Version) 

Photochemical Modeling: Quality Assurance Project Plan (QAPP) Dated January 25, 2016 (Word Version) 

Ambient Monitoring: Quality Assurance Project Plan (QAPP) Dated January 11, 2016 (PDF Version)

Ambient Monitoring: Quality Assurance Project Plan (QAPP) Dated January 11, 2016 (Word Version)

Photochemical Modeling: Surrogate Files: Quality Assurance Project Plan (QAPP)
Dated January 11, 2016 (PDF Version)

Photochemical Modeling: Surrogate Files: Quality Assurance Project Plan (QAPP) Dated January 11, 2016 (Word Version)


2015:

Oil and Gas Emission Inventory, Eagle Ford Shale: Quality Assurance Project Plan (QAPP) Dated November 23, 2015 (PDF Version)

Oil and Gas Emission Inventory, Eagle Ford Shale: Quality Assurance Project Plan (QAPP) Dated November 23, 2015 (Word Version)

Network Design Analysis: Quality Assurance Project Plan (QAPP) Dated November 20, 2015 (PDF Version)

Network Design Analysis: Quality Assurance Project Plan (QAPP) Dated November 20, 2015 (Word Version)

Commercial Fuel Combustion Emission Inventory in San Antonio-New Braunfels MSA: Quality Assurance Project Plan (QAPP) Dated November 13, 2015 (PDF Version)

Commercial Fuel Combustion Emission Inventory in San Antonio-New Braunfels MSA: Quality Assurance Project Plan (QAPP) Dated November 13, 2015 (Word Version)

Conceptual Model, Ozone Analysis of the San Antonio Region, Updates through Year 2014 Dated October 23, 2015 (PDF Version)

Ozone Analysis: June 2006 Photochemical Modeling Episode (2015) Dated October 30, 2015 (PDF Version)

Ozone Analysis: June 2006 Photochemical Modeling Episode (2015) Dated October 30, 2015 (Word Version)

Ozone Analysis: June 2006 Photochemical Modeling Episode (2015) Dated October 30, 2015 (PDF Version)

Ozone Analysis: June 2006 Photochemical Modeling Episode (2015) Dated October 30, 2015 (Word Version)

Conceptual Model, Ozone Analysis of the San Antonio Region, Updates through Year 2014 Dated October 23, 2015 (Word Version) 

Oil and Gas Emission Inventory, Eagle Ford Shale: Technical Report Dated October 20, 2015 (PDF Version)

Oil and Gas Emission Inventory, Eagle Ford Shale: Technical Report Dated October 20, 2015 (Word Version)

Update Conceptual Model through the 2016 Ozone Season: Category III Quality Assurance Project Plan (QAPP) Dated October 19, 2015 (PDF Version)

Update Conceptual Model through the 2016 Ozone Season: Category III Quality Assurance Project Plan (QAPP) Dated October 19, 2015 (Word Version)

Emissions Trend Analysis for the San Antonio-New Braunfels MSA: 1999, 2002, 2006, 2012, 2018, 2020, and 2023 Dated September 2015 (PDF Version)

Area Source Industrial Fuel Combustion Emissions in San Antonio-New Braunfels Metropolitan Statistical Area for 2012 and 2018 Dated August 20, 2015 (PDF Version)

Area Source Industrial Fuel Combustion Emissions in San Antonio-New Braunfels Metropolitan Statistical Area for 2012 and 2018
 Dated August 20, 2015 (Word Version)

Oil and Gas Production Emissions from Conventional Wells in AACOG Counties for 2012 and 2018: Quality Assurance Project Plan (QAPP) Dated July 6, 2015 (PDF Version)

Oil and Gas Production Emissions from Conventional Wells in AACOG Counties for 2012 and 2018: Quality Assurance Project Plan (QAPP) Dated July 6, 2015 (Word Version)


2014:

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

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

Oil and Gas Emission Inventory, Eagle Ford Shale Quality Assurance Project Plan (QAPP) Dated March 20, 2014 (PDF Version)

AACOG Annual Report 2013 Dated January 21, 2014 (PDF Version)


2013:

Development of the Extended June 2006 Photochemical Modeling Episode Dated October 2013 (PDF Version)

Development of the Extended June 2006 Photochemical Modeling Episode Dated October 2013 (Word Version)

Emissions Trend Analysis for the San Antonio-New Braunfels MSA: 1999, 2002, 2006, 2012, 2018, and 2023 Dated October 2013 (PDF Version)

Emissions Trend Analysis for the San Antonio-New Braunfels MSA: 1999, 2002, 2006, 2012, 2018, and 2023 Dated October 2013 (Word Version)

Eagle Ford Emissions Inventory Group Workshop Meeting Agenda Dated July 2, 2013 (PDF Version)

Eagle Ford Emissions Inventory Group Workshop Meeting Agenda Dated July 2, 2013 (Word Version)

Status of the Eagle Ford Emission Inventory and AACOG's Photochemical Model
 Dated July 2, 2013 (PDF Version)

Texas Emission Reduction Plan (TERP) & SB 1727 Dated July 2013 (PDF Version)

Texas A&M University Rig Study Update Dated 2013 (Word Version)


2012:


Oil and Gas Emission Inventory Improvement Plan Eagle Ford Dated August 1, 2012 (PDF Version)

Oil and Gas Emission Inventory Improvement Plan Eagle Ford Dated August 1, 2012 (Word Version)

Oil and Gas Emission Inventory Eagle Ford Shale Dated August 1, 2012 (Word Version)

Strategy Effectiveness Analysis Technical Report Dated August 1, 2012 (PDF Version)

Non-Road Emission Inventory Improvements Dated July 1, 2012 (PDF Version)

San Antonio International Airport Emission Inventory Dated July 1, 2012 (PDF Version)

Proposed Planning Process for the Emission Inventory Dated June 1, 2012 (PDF Version)

Eagle Ford Emissions Inventory Group (EFEIG) Meeting Agenda Dated May 21, 2012 (PDF Version)


2011:

Heavy-Duty Vehicle Idle Activity and Emissions, San Antonio-New Braunfels MSA  Dated October 31, 2011 (PDF Version)

Conceptual Model: Ozone Analysis of the San Antonio Region Updates through Year 2010 Dated July 15, 2011 (PDF Version)

Heavy-Duty Idling Activity Characterization and Emissions Inventory Survey Protocol Dated 2011 (PDF Version)     


2010:

Strategy Effectiveness Analysis Technical Report Dated August 31, 2010 (PDF Version)

Proposed Planning Process for the 2008 Area Source Emission Inventory Dated August 30, 2010 (PDF Version)      

Proposed Planning Process for the 2008 Commercial Airport Emission Inventory Dated August 15, 2010 (PDF Version)  

Proposed Planning Process for the 2008 Non-Road Emission Inventory Dated August 15, 2010 (PDF Version)

Conceptual Model: Ozone Analysis of the San Antonio Region Updates through Year 2009 Dated July 10, 2010 (PDF Version)


2008:

2005 Emissions Inventory for the Alamo Area Council of Governments Region Dated April 30, 2008 (PDF Version) 


2006:

Summary of the New Braunfels 2005 and 2006 Radar Profiler Operations and Data Availability Final Report Dated December 28, 2006 (PDF Version)


2004:

2002 Emissions Inventory for the Alamo Area Council of Governments Region Dated September 30, 2004 (PDF Version) 


Control Strategies

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


Learn more about AACOG’s role in Air Quality Planning


Rider State and Local Air Quality Planning Program

Conceptual Models, Photochemical Modeling, Emissions Inventory, Ozone Monitoring


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.  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.

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.

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.