Vehicle Greenhouse Gas Emissions Standards

Vehicle Greenhouse Gas Emissions Standards

Date: 2010
Creator: Pew Center on Global Climate Change
Description: This map shows states that have adopted or are planning to adopt California's vehicle standards.
Contributing Partner: UNT Libraries
Estimation of Aircraft Emissions for the Corpus Christi International Airport, Corpus Christi, Texas

Estimation of Aircraft Emissions for the Corpus Christi International Airport, Corpus Christi, Texas

Date: May 2013
Creator: Thomas, Gregson Johann
Description: Commercial aviation is a vital part of the United States economy. It generates over $1 trillion annually, which is more than 5% of the U.S. GDP, and produces approximately 10 million jobs. Every year there is an increase in commercial air traffic. This is attributed to expanding trade between states and other countries, which requires larger amounts of cargo aircraft in operation, and also catering to the growing number of middle and upper class passengers who travel for business and pleasure purposes. A rise in commercial aviation leads to the use of more aviation fuel on a monthly and annual basis. This in turn leads to escalated levels of combustion by-products from jet and turbofan engines into the atmosphere. The negative effects of these by-products range from producing poor air quality and consequent health hazards to contributing to global warming. This study is aimed at assessing the impacts of aircraft emissions on the local air quality in Corpus Christi using the Emissions and Dispersion Modeling System. Flight data for the study was obtained from the Department of Transportation's Research and Innovative Technology Administration. Analyses of the emissions were compared on monthly, annual, engine type and airline provider bases. Climatic, economic ...
Contributing Partner: UNT Libraries
Air Quality: TVA Plans to Reduce Air Emissions Further, but Could Do More to Reduce Power Demand

Air Quality: TVA Plans to Reduce Air Emissions Further, but Could Do More to Reduce Power Demand

Date: March 8, 2002
Creator: United States. General Accounting Office.
Description: A letter report issued by the General Accounting Office with an abstract that begins "The Tennessee Valley Authority (TVA) relied on its 11 coal-burning plants to supply 60 percent of its electric power in fiscal year 2001. These plants account for almost all of TVA's emissions of two key air pollutants--sulfur dioxide (SO2), which has been linked to reduced visibility, and nitrogen oxides (NOx), which contribute to the formation of harmful ozone. To meet an increase in demand of 1.7 percent annually through 2010, TVA estimates that it will need to expand its current generating capacity of 30,365 megawatts by 500 megawatts annually. Building new generating capacity can produce more emissions, which raises environment concerns. To lessen the need for new capacity, TVA and other electricity suppliers promote the efficient use of electricity through "demand-side management" programs, which seek to reduce the amount of energy consumed or to change the time of day when it is consumed. Even though TVA intends to increase its capacity to generate electricity through 2005, it also expects to reduce its SO2 and NOx emissions during the same time period, primarily by burning lower-sulfur coal, installing devices to control emissions at its existing plants, and ...
Contributing Partner: UNT Libraries Government Documents Department
Air Quality: Information on Tall Smokestacks and Their Contribution to Interstate Transport of Air Pollution

Air Quality: Information on Tall Smokestacks and Their Contribution to Interstate Transport of Air Pollution

Date: May 11, 2011
Creator: United States. Government Accountability Office.
Description: A letter report issued by the Government Accountability Office with an abstract that begins "Tall smokestacks--stacks of 500 feet or higher, which are primarily used at coal power plants--release air pollutants such as sulfur dioxide (SO2) and nitrogen oxides (NOx) high into the atmosphere to help limit the impact of these emissions on local air quality. Tall stacks can also increase the distance these pollutants travel in the atmosphere and harm air quality and the environment in downwind communities. The 1977 amendments to the Clean Air Act encourage the use of pollution control equipment over dispersion techniques, such as tall stacks, to meet national air standards. Section 123 of the Act does not limit stack height, but prohibits sources of emissions from using the dispersion effects of stack heights in excess of a stack's good engineering practice (GEP) height to meet emissions limitations. GAO was asked to report on (1) the number and location of tall stacks of 500 feet or higher at coal power plants and when they began operating; (2) what is known about such stacks' contribution to the interstate transport of air pollution and the pollution controls installed at plants with these stacks; and (3) the number ...
Contributing Partner: UNT Libraries Government Documents Department
Air Pollution Control Act

Air Pollution Control Act

Date: May 30, 2006
Creator: China (Republic : 1949- ). Huan jing bao hu shu
Description: This law was passed by the Republic of China (Taiwan) to control air pollution and protect the environment and human health.
Contributing Partner: UNT Libraries
Air Quality Forecasting: A Review of Federal Programs and Research Needs

Air Quality Forecasting: A Review of Federal Programs and Research Needs

Date: June 2001
Creator: National Science and Technology Council (U.S.). Air Quality Research Subcommittee.
Description: This report provides a brief overview of the state of science of air quality forecasting. The report was composed to guide future federal research in air quality forecasting.
Contributing Partner: UNT Libraries
Atmospheric Ammonia: Sources and Fate.  A Review of Ongoing Federal Research and Future Needs

Atmospheric Ammonia: Sources and Fate. A Review of Ongoing Federal Research and Future Needs

Date: June 2000
Creator: National Science and Technology Council (U.S.). Air Quality Research Subcommittee.
Description: This report provides a brief summary of the state of the current state of federal scientific research related to atmospheric ammonia, based on discussions from an October, 1999 meeting of the Air Quality Research Subcommittee of CENR.
Contributing Partner: UNT Libraries
National Acid Precipitation Assessment Program Report to Congress: An Integrated Assessment

National Acid Precipitation Assessment Program Report to Congress: An Integrated Assessment

Date: 2005
Creator: United States. Office of Science and Technology Policy.
Description: This report presents scientific analysis of the costs, benefits, and effectiveness of federal programming to reduce acid rain.
Contributing Partner: UNT Libraries
Preliminary Survey of Air Quality and Related Health Studies Conducted in the Vicinity of Ground Zero

Preliminary Survey of Air Quality and Related Health Studies Conducted in the Vicinity of Ground Zero

Date: December 2002
Creator: National Science and Technology Council (U.S.). Air Quality Research Subcommittee.
Description: This document represents the first survey by the research community of the impact of the collapse of the World Trade Center in New York on air quality and public health in lower Manhattan.
Contributing Partner: UNT Libraries
California Assembly Bill No. 1493

California Assembly Bill No. 1493

Date: July 2002
Creator: Governor Gray Davis & Governor Gray Davis
Description: The "Pavley" bill requires the registry, in consultation with the State Air Resources Board, to adopt procedures and protocols for the reporting and certification of reductions in greenhouse gas emissions from mobile sources for use by the state board in granting the emission reduction credits. This bill requires the state board to develop and adopt, by January 1, 2005, regulations that achieve the maximum feasible reduction of greenhouse gases emitted by passenger vehicles and light-duty trucks.
Contributing Partner: UNT Libraries
Environmental Effects of Ozone Depletion: 1994 Assessment

Environmental Effects of Ozone Depletion: 1994 Assessment

Date: November 1994
Creator: United Nations Environment Programme
Description: A change in the composition of the stratosphere becomes relevant to society only if it has noticeable effects. This places the assessment of effects in a pivotal role in the problem of ozone depletion. Decreases in the quantity of total-column ozone, as now observed in many places, tend to cause increased penetration of solar UV-B radiation (290-315 nm) to the Earth's surface. UV-B radiation is the most energetic component of sunlight reaching the surface. It has profound effects on human health, animals, plants, microorganisms, materials and on air quality. Thus any perturbation which leads to an increase in UV-B radiation demands careful consideration of the possible consequences. This is the topic of the present assessment made by the Panel on Environmental Effects of Ozone Depletion.
Contributing Partner: UNT Libraries
Uses and Limitations of Observations, Data, Forecasts, and Other Projections in Decision Support for Selected Sectors and Regions

Uses and Limitations of Observations, Data, Forecasts, and Other Projections in Decision Support for Selected Sectors and Regions

Date: August 2008
Creator: U.S. Climate Change Science Program and the Subcommittee on Global Change Research
Description: This Synthesis and Assessment Product (SAP), Uses and Limitations of Observations, Data, Forecasts, and Other Projections in Decision Support for Selected Sectors and Regions. This is part of a series of 21 SAPs produced by the CCSP aimed at providing current assessments of climate change science to inform public debate, policy, and operational decisions. This SAP focuses on the use of climate observations, data, forecasts, and other projections in decision support.
Contributing Partner: UNT Libraries
Africa: Atlas of Our Changing Environment

Africa: Atlas of Our Changing Environment

Date: 2008
Creator: United Nations Environment Programme
Description: This comprehensive atlas provides data, satellite imagery, and analysis of the environmental conditions and issues relevant to each African country, and several surrounding island nations. The atlas also covers trans-border international issues in Africa.
Contributing Partner: UNT Libraries
The Clean Air Act

The Clean Air Act

Date: February 24, 2004
Creator: United States. Congress. Senate.
Description: The United States Clean Air Act is legislation authorizing the Environmental Protection Agency to control air pollutiants on a national level.
Contributing Partner: UNT Libraries
Analysis of Sources Affecting Ambient Particulate Matter in Brownsville, Texas

Analysis of Sources Affecting Ambient Particulate Matter in Brownsville, Texas

Date: May 2012
Creator: Diaz Poueriet, Pablo
Description: Texas is the second largest state in U.S.A. based on geographical area, population and the economy. It is home to several large coastal urban areas with major industries and infrastructure supporting the fossil-fuel based energy sector. Most of the major cities on the state have been impacted by significant air pollution events over the past decade. Studies conducted in the southern coastal region of TX have identified long range transport as a major contributor of particulate matter (PM) pollution along with local emissions. Biomass burns, secondary sulfates and diesel emissions sources are comprise as the dominant mass of PM2.5 have been noted to be formed by the long range transport biomass from Central America. Thus, the primary objective of this study was to identify and quantify local as well as regional sources contributing to the PM pollution in the coastal area of Brownsville located along the Gulf of Mexico. Source apportionment techniques such as principal component analysis (PCA) and positive matrix factorization (PMF) were employed on the air quality monitoring data to identify and quantify local and regional sources affecting this coastal region. As a supplement to the PMF and PCA, conditional probability function (CPF) analysis and potential source contribution ...
Contributing Partner: UNT Libraries
Accepted Limit Values of Air Pollutants

Accepted Limit Values of Air Pollutants

Date: May 1954
Creator: Barkley, J. F.
Description: Report issued by the U.S. Bureau of Mines discussing, as stated in the introduction, the "accepted maximum permissible concentrations of air pollutants from the standpoints of health, damage to vegetation, damage to property, and requirements of industrial processes" (p. 1). This report includes tables.
Contributing Partner: UNT Libraries Government Documents Department
Drilling and Dustiness of Metal-Mine Air

Drilling and Dustiness of Metal-Mine Air

Date: March 1922
Creator: Harrington, D.
Description: Report issued by the U.S. Bureau of Mines on the air quality in metal-mines after using wet drills. Dust samples are collected and compared to samples collected from similar metal-mines in South Africa and Australia. This report includes tables.
Contributing Partner: UNT Libraries Government Documents Department
Estimation of Air Emissions During Production Phase from Active Oil and Gas Wells in the Barnett Shale Basin: 2010-2013

Estimation of Air Emissions During Production Phase from Active Oil and Gas Wells in the Barnett Shale Basin: 2010-2013

Date: May 2015
Creator: Dohde, Farhan A.
Description: The Barnett shale basin, the largest onshore gas field in the state of Texas, mainly produces natural gas. The basin’s oil and gas productions have dramatically increased over the past two decades with the enhancement via shale fracturing (fracking) technology. However, recent studies suggest that air emissions from shale fracking have significantly contributed to the growing air pollution problem in North Texas. In this study, air emissions from the Barnett shale basin during the production phase of the oil and gas activities (once the product is collected from the wells) are quantified. Oil and gas production data were acquired from the Texas Railroad Commission for the baseline years of 2010 through 2013. Methodology from prior studies on shale basins approved by the Texas Commission on Environmental Quality was employed in this study and the emission inventories from the production phase sources were quantified. Accordingly, the counties with the most gas operations in the basin, Tarrant, Johnson, Denton and Wise, were found to be the highest emitters of air pollutants. Tarrant County was responsible for the highest emitted NOx (42,566 tons) and CO (17,698 tons) in the basin, while Montague County released the maximum VOC emissions (87,601 tons) during the study ...
Contributing Partner: UNT Libraries
Evaluation of the Influence of Non-Conventional Sources of Emissions on Ambient Air Pollutant Concentrations in North Texas

Evaluation of the Influence of Non-Conventional Sources of Emissions on Ambient Air Pollutant Concentrations in North Texas

Date: August 2015
Creator: Lim, Guo Quan
Description: Emissions of air pollutants from non-conventional sources have been on the rise in the North Texas area over the past decade. These include primary pollutants such as volatile organic compound (VOC) and oxides of nitrogen (NOx) which also act as precursors in the formation of ozone. Most of these have been attributed to a significant increase in oil and gas production activities since 2000 within the Barnett Shale region adjacent to the Dallas-Fort Worth metroplex region. In this study, air quality concentrations measured at the Denton Airport and Dallas Hinton monitoring sites operated by the Texas Commission on Environmental Quality (TCEQ) were evaluated. VOC concentration data from canister-based sampling along with continuous measurement of oxides of nitrogen (NOx), ozone (O3), particulate matter (PM2.5), and meteorological conditions at these two sites spanning from 2000 through 2014 were employed in this study. The Dallas site is located within the urban core of one of the fastest growing cities in the United States, while the Denton site is an exurban site with rural characteristics to it. The Denton Airport site was influenced by natural gas pads surrounding it while there are very few natural gas production facilities within close proximity to the Dallas ...
Contributing Partner: UNT Libraries