Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"NAAQS"”.
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Determination of Size Fractions and Concentrations of Airborne Particulate Matter Generated From Construction and Demolition Waste Processing Facilities
… (EPA) National Ambient Air Quality Standards(NAAQS) and United States Occupational Safety and Health Administration (OSHA)standards.The results from this study are not valid for determination of compliance with NAAQS or OSHA standards. However, the data indicate that C&D processing facilities …
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An evaluation of Tennessee's early action compacts to achieve compliance with new ozone standards: a dynamic analysis of reduction strategies to decrease tropospheric ozone formation
… 8-hour National Ambient Air Quality Standards (NAAQS) set for ground-level ozone. Under the Compact, local areas will have the flexibility to design and implement ozone reduction control measures specific to the area's needs. The EAC will also defer nonattainment designation from April 15, 2004 …
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The association between ambient air pollution and cardiorespiratory health outcomes of adults residing in informal settlements of the Western Cape in a 12 month period
… the National Ambient Air Quality Standards (NAAQS) There was positive association between NO2 and shortness of breath on exertion (OR:4.02, 95% CI:2.21-7.65) adjusting for PM2,5 and other confounders. There were no other significant associations found between PM2.5 and NO2 levels and other …
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Health Risks from On-Road Truck Emissions in Little Village, Chicago Pre- and Post-COVID Pandemic
… levels in the studied months remained below the NAAQS short-term exposure limit of 35 µg/m³. However, maximum long-term average PM2.5 concentrations from AERMOD (excluding background) exceeded both the previous (12 µg/m³) and revised (9 µg/m³) NAAQS thresholds, indicating localized pollution …
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The rise and fall of open market emissions trading in New Jersey
… of National Ambient Air Quality Standards (NAAQS), this program is now slated for termination following scrutiny from the federal Environmental Protection Agency (EPA), environmental groups and a new NJDEP administration. This thesis discusses the basis for this scrutiny and other program …
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Reducing the contribution of the power sector to ground-level ozone pollution : an assessment of time-differentiated pricing of nitrogen oxide emissions
… so National Ambient Air Quality Standards (NAAQS) have been established for each. As of 2013, over 100 million people in the U.S. lived in areas with ozone concentrations above the NAAQS. NOx emissions from the power sector, roughly 12% of total NOx emissions, are and will be significant …
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Organic Tracer Analyses and Receptor Modeling of PM2.5 in Fairbanks, Alaska
… a National Ambient Air Quality Standard (NAAQS) of 35µg/m3 for a 24 hour average and 15µg/m3 for an annual average of ambient PM2.5 to improve the quality of air and reduce occurrences of respiratory illness resulting from exposure to high levels of PM2.5. Fairbanks, the largest city in …
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Organic Tracer Analyses and Receptor Modeling of PM2.5 in Fairbanks, Alaska
… a National Ambient Air Quality Standard (NAAQS) of 35µg/m3 for a 24 hour average and 15µg/m3 for an annual average of ambient PM2.5 to improve the quality of air and reduce occurrences of respiratory illness resulting from exposure to high levels of PM2.5. Fairbanks, the largest city in …
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Time Series Analysis of Fine Particulates Matter (PM2.5) in Chaoyang District of Beijing
… the US National Ambient Air Quality Standard (NAAQS). There is an urgent need for long-term studies to guide policy makers to improve the air quality in Beijing.
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Development Of A Graphical User Interface For Cal3qhc Called Calqcad
… Matter (PM) impacts based on the criteria for NAAQS standards, it is necessary to conduct dispersion modeling of emissions for mobile source emissions. Design of transportation engineering systems (roadway design) should take care of both the flow of the traffic as well as the air pollution …
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Ground-Level Ozone Across Kentucky: Modeling and a Synoptic Analysis of High Concentrations
… of the National Ambient Air Quality Standards (NAAQS), which includes O3. Prior to 1998 it was determined that al-hour average ambient O3 measurement less than 125 parts per billion (ppb) would be sufficient in achieving both the NAAQS primary and secondary goals. However, it was found that …
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Autonomous low-cost network of ozone sensors: to study the spatial distribution and exposure in underserved agricultural communities in central California
… with the national ambient air quality standard (NAAQS) for O3 (maximum daily 8-hour average of 70 ppbv) across locations. This study underscores the potential of low-cost environmental sensors for characterizing air quality and O3 exposure in rural and remote environments. Additionally, it …
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An investigation of ozone and sulfur dioxide concentrations in the Great Smoky Mountains National Park
… ozone levels in the Park frequently exceed the NAAQS by late morning and concentrations as high as 0.096 PPM were measured. Comparison of ground level and airborne data indicate that ground level ozone data were significantly lower possibly due to scavenging of ozone by trees or losses by other …
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Application of GIS in Visualization and Assessment of Ambient Air Quality for SO2 in Lima Ohio
… above national ambient air quality standards (NAAQS) and WHO guidelines when assessed at the smaller scale (block group), although it is an attainment area. The study also reveals that the majority of the population is exposed to poor air quality and a considerable number of people even live in …
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Investigating the Impacts of Meteorology and Long-Range Transport on near Surface and Free Tropospheric Ozone over Texas
… over the National Ambient Air Quality (NAAQS) standard for ozone have decreased over time, they still exhibit year-to-year variability, likely due in part to changes in meteorological patterns. This dissertation will study the impact of meteorological patterns and sources of ozone …
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Ambient air pollution monitoring, modelling and human health risks in Thulamela Municipality, Vhembe District of Limpopo Province, South Africa
… exceeded both WHO guidelines and SA NAAQS, except at one site. Monthly trends showed higher PM2.5 levels from May to September, with diurnal peaks from 6–8 am and 6–8 pm, primarily influenced by traffic emissions and residential wood combustion. The bivariate polar plot (BVP) analysis …
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Characterisation of air masses passing over the Vredefort Dome world heritage site
… with the National Ambient Air Quality Standards (NAAQS). The proxy method applied had some limitations, since the frequency of such back trajectories was limited and those that did comply passed mostly over the cleaner south-western sector from the Vredefort Dome. Additionally, dilution during …
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Developing Procedures for Screening High Emitting Vehicles and Quantifying the Environmental Impacts of Grades
… the National Ambient Air Quality Standards (NAAQS). However, tailpipe emissions in grams cannot be directly measured using RSDs because they use a concentration-based technique. Therefore, converting a concentration measurement to mass emissions is needed. The research combines the carbon …
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Environmental education's influence on awareness and perception of air quality in Grade 5 learners and their parents/guardians
… The National Ambient Air Quality Standards (NAAQS) and World Health Organization air quality standards were implemented to protect human health but are frequently exceeded. Due to the pressing need for socioeconomic growth, environmental concerns are often not a top priority. The purpose of …
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The Impact of Environmental Policies and Innovation on the Investment in and Use of Natural Gas-Fired Combined Cycle Generators in the US Electricity Sector
… matter National Ambient Air Quality Standards (NAAQS) rushed to complete installations before new environmental regulations took place in 2004 and 2005. I use EIA and EPA data from 1997-2009 to evaluate the role of policy anticipation on capacity investment with difference-in-difference models. …
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