Start Date
15-2-2013 8:50 AM
Description
Studies in the 1970s found potentially toxic levels of metals entering Mammoth Cave’s underground streams through storm recharge. Additional studies confirmed that stormwater from parking lots and buildings fl owed rapidly into critical cave habitats. The Park’s management responded to these findings by installing storm runoff filter systems on the most heavily used parking lots in 2001. The Park entered an agreement (2010-12) with Tennessee State University, the USGS, and WKU-Mammoth Cave International Center for Science and Learning to evaluate the filter systems to determine if they were removing hazardous compounds from stormwater runoff . The objective of this study was to evaluate stormwater filters before and after replacing 2-year-old ZPG cartridge filters. The study focused on the first-flush runoff waters during the storms. The filters were not effective at removing quaternary ammonia compounds (QACs), and moderately eff ective at removing zinc and copper. The filters were very effective at removing diesel-range aromatic ring compounds (fuels). Regression analyses were used to evaluate trends between parking lot size and filter efficiency. The efficiency of the filters to remove fuels improved with basin size. The efficiency to remove QACs decreased with basin size. Basin size did not appear to have any correlation to zinc or copper removal efficiency. Human activity, such as construction, probably played a role in the storm-water chemistry and the efficacy of the filters to remove certain contaminants.
Recommended Citation
McMillian, Sean; West, Ashley; Solomon, David; Diehl, Roger; Roland, Victor; Embry, Irucka; and Toomey, Rick, "Evaluation of Stormwater Filters at Mammoth Cave National Park, Kentucky, 2011-12" (2013). Mammoth Cave Research Symposia. 3.
https://digitalcommons.wku.edu/mc_reserch_symp/10th_Research_Symposium_2013/Day_two/3
Included in
Animal Sciences Commons, Forest Sciences Commons, Geology Commons, Hydrology Commons, Other Earth Sciences Commons, Plant Sciences Commons
Evaluation of Stormwater Filters at Mammoth Cave National Park, Kentucky, 2011-12
Studies in the 1970s found potentially toxic levels of metals entering Mammoth Cave’s underground streams through storm recharge. Additional studies confirmed that stormwater from parking lots and buildings fl owed rapidly into critical cave habitats. The Park’s management responded to these findings by installing storm runoff filter systems on the most heavily used parking lots in 2001. The Park entered an agreement (2010-12) with Tennessee State University, the USGS, and WKU-Mammoth Cave International Center for Science and Learning to evaluate the filter systems to determine if they were removing hazardous compounds from stormwater runoff . The objective of this study was to evaluate stormwater filters before and after replacing 2-year-old ZPG cartridge filters. The study focused on the first-flush runoff waters during the storms. The filters were not effective at removing quaternary ammonia compounds (QACs), and moderately eff ective at removing zinc and copper. The filters were very effective at removing diesel-range aromatic ring compounds (fuels). Regression analyses were used to evaluate trends between parking lot size and filter efficiency. The efficiency of the filters to remove fuels improved with basin size. The efficiency to remove QACs decreased with basin size. Basin size did not appear to have any correlation to zinc or copper removal efficiency. Human activity, such as construction, probably played a role in the storm-water chemistry and the efficacy of the filters to remove certain contaminants.