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COMPARISON OF OZONE INDICATORS MONITORED AT CASTNET AND RURALLY - DESIGNATED SLAMS SITES
Citation:
Sickles II, J E. AND J C. Suggs. COMPARISON OF OZONE INDICATORS MONITORED AT CASTNET AND RURALLY - DESIGNATED SLAMS SITES. ENVIRONMENTAL MONITORING AND ASSESSMENT 65(3):485-502, (2001).
Impact/Purpose:
Our main objective is to assess the exposure of selected ecosystems to specific atmospheric stressors. More precisely, we will analyze and interpret environmental quality (primarily atmospheric) data to document observable changes in environmental stressors that may be associated with legislatively-mandated emissions reductions.
Description:
Many water-bodies within the United States are contaminated by non-point source (NPS) pollution, which is defined as those materials posing a threat to water quality arising from a number of individual sources and diffused through hydrologic 13romses. One such NPS pollutant is feral coliform, which is derived from animal writes, including human and is most often associated with urban and agricultural areas. It is postulated that by utilizing land cover indicators, those water-bodies that may be at risk of fecal coliform contamination may be identified. This study utilized land cover information derived from the. Multi-Resolution Land Characterization (MRLC) project to analyze fecal coliform contamination in South Carolina. Also utilized were fourteen digit hydrologic unit code (HUC) watersheds of the state, a digital elevation model, and test point data stating whether the fecal coliform levels exceeded levels assigned in section 303(d) of the Clean Water Act. Proportions of the various land covers were identified within the individual watersheds and then analyzed using a logistic, regression. TIM results reveal that watersheds with large proportions of urban- land cover and agriculture on steep slopes had a very high probability of being impaired.