Abstract
Air quality in most parts of Kay County is good and unlikely to cause major health problems. However, Kaw Nation wants to know if the concentration of Particulate matters (PM2.5) and Sulfur dioxide (SO2) released from power plants, refinery and carbon black plant in Oklahoma reaches the Tribal land at Kanza Travel Plaza, Braman, Kay Co. Oklahoma. Kanza Travel Plaza is located in the north central Oklahoma 22 miles Northwest of Ponca City at a latitude of 36.9395 degrees North and longitude of -97.3453 degrees West. In order to estimate the concentration of PM2.5 and SO2 that reaches the Tribal land, Kaw Nation run the U.S. Environmental Protection Agency regulatory air quality model called AERMOD (Version 15181). AERMOD is a steady state plume model that measures dispersion of gases and particulate matters from the source to the point of impact within source radius. The study sites are flat and rural conditions with less complex terrain. Meteorological data representative of the study area was preprocessed using AERMET program. AERMET prepares hourly surface data and upper air data. The hourly surface data was obtained from Station #3965 (Stillwater Regional), while the upper air data was obtained from Station #3948 (Norman). The Building parameters such as height and length were processed using the building profile called BPIB. To calculate the concentration of PM2.5 and SO2 air pollutants released from the coal power plant the Gaussian air molding (AERMOD) used Control, Source, Receptor, Metrological and Output pathways. The AERMOD result indicates at least 19-26% of PM2.5 and SO2 released from the stacks of the power plants, refinery and carbon black plant into the atmosphere reaches the Tribal land. Based on the Gaussian air modeling (AERMOD and BAM 1020 Continuous Air monitor) less than 12 µg/m3 of pollutant has been captured that falls within the attainment zone as per the National Ambient Air Quality Standards (NAAQS).
Highlights
The Kaw Nation Environmental Department in 2014 conducted an emission inventory of some selected stationary or point sources for criteria pollutants
The Kaw Nation Environmental Department wants to measure the concentration of criteria pollutants mainly PM2.5 and SO2, released from a Coal fired power plants, refineries, carbon black plants on its Tribal land in Braman, Oklahoma
In order to measure the concentration of PM2.5, the Kaw Nation installed a BAM 1020 Continuous Monitor at the Kanza Travel Plaza, Braman, Oklahoma
Summary
The Kaw Nation Environmental Department in 2014 conducted an emission inventory of some selected stationary or point sources for criteria pollutants. The emission inventory of the criteria pollutants measured was particulate matter, sulfur dioxide, nitrogen dioxide, carbon monoxide and ozone. The Kaw Nation wants to determine how much of these pollutants fall on Tribal land. The Kaw Nation decided to run a U.S EPA regulatory dispersion model called AERMOD. AERMOD is a steady state plume model that calculates the dispersion and concentration of pollutants within the range of 80 km (about 50 miles) radius from the industrial sources to the point of impact (U.S EPA 2004). A dispersion model can predict concentration of pollutants, from the site of generation to a site of deposition based on emissions and meteorological data available
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