{"id":{"repo_id":"texas","oai_identifier":"oai:repositories.lib.utexas.edu:2152/134383"},"canonical_url":"https://search.dev.ndltd.org/etd/texas/oai:repositories.lib.utexas.edu:2152/134383","repository":{"repo_id":"texas","name":"University of Texas","base_url":"https://repositories.lib.utexas.edu/server/oai/request"},"display":{"title":"Aerosol formation from oil and gas development in the Eagle Ford Shale in two different seasons","abstract":"Unconventional oil and gas development (UOGD) has grown significantly in the United States in the last several decades. This growth has influenced natural gas availability and reshaped the global energy economy. However, the effects on air quality remain uncertain. This work focuses on understanding the influence of UOGD on the air quality in the Eagle Ford Shale (EFS), a region in southeast Texas, through ambient measurements during two different seasons. Instrumentation was deployed to Karnes City, TX, located in the EFS, in the spring and fall of 2023. Instrumentation included ACSM, SEMS, and monitors for O₃, NO [subscript x] and NO₂ to measure concentrations and composition of aerosol and gas-phase pollutants. Episodic elevated concentrations of PM₁, NO [subscript x], O₃, and H₂S were observed during both campaigns. Meteorological data and VOC concentrations were also available from the Texas Commission on Environmental Quality (TCEQ). The air pre-dominantly arrived from the northeast where the oil and gas well density is higher during the fall; however, the air came from the southeast during the spring. The UOGD emissions result in severe effects on air quality within the EFS and other OGD regions, as well as downwind regions such as San Antonio, Texas, which will struggle to meet the new Environmental Protection Agency standard for fine particulate matter.","abstract_html":"Unconventional oil and gas development (UOGD) has grown significantly in the United States in the last several decades. This growth has influenced natural gas availability and reshaped the global energy economy. However, the effects on air quality remain uncertain. This work focuses on understanding the influence of UOGD on the air quality in the Eagle Ford Shale (EFS), a region in southeast Texas, through ambient measurements during two different seasons. Instrumentation was deployed to Karnes City, TX, located in the EFS, in the spring and fall of 2023. Instrumentation included ACSM, SEMS, and monitors for O₃, NO [subscript x] and NO₂ to measure concentrations and composition of aerosol and gas-phase pollutants. Episodic elevated concentrations of PM₁, NO [subscript x], O₃, and H₂S were observed during both campaigns. Meteorological data and VOC concentrations were also available from the Texas Commission on Environmental Quality (TCEQ). The air pre-dominantly arrived from the northeast where the oil and gas well density is higher during the fall; however, the air came from the southeast during the spring. The UOGD emissions result in severe effects on air quality within the EFS and other OGD regions, as well as downwind regions such as San Antonio, Texas, which will struggle to meet the new Environmental Protection Agency standard for fine particulate matter.","abstract_has_math":false,"creators":["El Khoury, Lea"],"institution":"The University of Texas at Austin","degree_name":"Master of Science in Engineering","degree_level":null,"degree_discipline":"Chemical Engineering","degree_department":null,"school":null,"contributors":[],"advisors":["Hildebrandt Ruiz, Lea"],"committee_chairs":[],"committee_members":[],"year":2025,"date_issued":"2025-05","date_published":"2025-05","updated_at":"2026-07-24T05:00:58Z","subjects":["Ambient measurements","Unconventional oil and gas development","Particulate matter","Texas"],"languages":["English"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://doi.org/10.26153/tsw/61708"],"render_values":[{"text":"https://doi.org/10.26153/tsw/61708","href":"https://doi.org/10.26153/tsw/61708","code":true}]}]},"links":{"outbound_url":"https://hdl.handle.net/2152/134383","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Hildebrandt Ruiz, Lea"]},{"key":"dc:creator","label":"Author","values":["El Khoury, Lea"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2025-09-27T00:05:47Z"]},{"key":"dc:date.issued","label":"Date","values":["2025-05"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemical Engineering"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science in Engineering"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["The University of Texas at Austin"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Ambient measurements","Unconventional oil and gas development","Particulate matter","Texas"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["English"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/2152/134383","https://doi.org/10.26153/tsw/61708"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Unconventional oil and gas development (UOGD) has grown significantly in the United States in the last several decades. This growth has influenced natural gas availability and reshaped the global energy economy. However, the effects on air quality remain uncertain. This work focuses on understanding the influence of UOGD on the air quality in the Eagle Ford Shale (EFS), a region in southeast Texas, through ambient measurements during two different seasons. Instrumentation was deployed to Karnes City, TX, located in the EFS, in the spring and fall of 2023. Instrumentation included ACSM, SEMS, and monitors for O₃, NO [subscript x] and NO₂ to measure concentrations and composition of aerosol and gas-phase pollutants. Episodic elevated concentrations of PM₁, NO [subscript x], O₃, and H₂S were observed during both campaigns. Meteorological data and VOC concentrations were also available from the Texas Commission on Environmental Quality (TCEQ). The air pre-dominantly arrived from the northeast where the oil and gas well density is higher during the fall; however, the air came from the southeast during the spring. The UOGD emissions result in severe effects on air quality within the EFS and other OGD regions, as well as downwind regions such as San Antonio, Texas, which will struggle to meet the new Environmental Protection Agency standard for fine particulate matter."]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Aerosol formation from oil and gas development in the Eagle Ford Shale in two different seasons"]}]}],"canonical_facts":{"dc:contributor.advisor":["Hildebrandt Ruiz, Lea"],"dc:creator":["El Khoury, Lea"],"dc:date.accessioned":["2025-09-27T00:05:47Z"],"dc:date.issued":["2025-05"],"dc:description.abstract":["Unconventional oil and gas development (UOGD) has grown significantly in the United States in the last several decades. This growth has influenced natural gas availability and reshaped the global energy economy. However, the effects on air quality remain uncertain. This work focuses on understanding the influence of UOGD on the air quality in the Eagle Ford Shale (EFS), a region in southeast Texas, through ambient measurements during two different seasons. Instrumentation was deployed to Karnes City, TX, located in the EFS, in the spring and fall of 2023. Instrumentation included ACSM, SEMS, and monitors for O₃, NO [subscript x] and NO₂ to measure concentrations and composition of aerosol and gas-phase pollutants. Episodic elevated concentrations of PM₁, NO [subscript x], O₃, and H₂S were observed during both campaigns. Meteorological data and VOC concentrations were also available from the Texas Commission on Environmental Quality (TCEQ). The air pre-dominantly arrived from the northeast where the oil and gas well density is higher during the fall; however, the air came from the southeast during the spring. The UOGD emissions result in severe effects on air quality within the EFS and other OGD regions, as well as downwind regions such as San Antonio, Texas, which will struggle to meet the new Environmental Protection Agency standard for fine particulate matter."],"dc:format.mimetype":["application/pdf"],"dc:identifier.uri":["https://hdl.handle.net/2152/134383","https://doi.org/10.26153/tsw/61708"],"dc:language.iso":["English"],"dc:subject":["Ambient measurements","Unconventional oil and gas development","Particulate matter","Texas"],"dc:title":["Aerosol formation from oil and gas development in the Eagle Ford Shale in two different seasons"],"dc:type":["Thesis"],"thesis:degree_discipline":["Chemical Engineering"],"thesis:degree_name":["Master of Science in Engineering"],"thesis:institution_name":["The University of Texas at Austin"]},"updated_at":"2026-07-24T05:00:58Z"}