Influence of Modern Stormwater Management Practices on Transport of Road Salt to Surface Waters
| Autor: | S. M. Lev, Grant Izzo, Robert F. Flora, David R. Ownby, Joel W. Snodgrass, Joel Moore, Ryan E. Casey |
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| Rok vydání: | 2017 |
| Předmět: |
Hydrology
010504 meteorology & atmospheric sciences Base flow Water Pollution Stormwater Environmental engineering Water General Chemistry STREAMS Sodium Chloride 010501 environmental sciences Snow 01 natural sciences Plume Environmental Chemistry Environmental science Ponds Water pollution Groundwater Surface water 0105 earth and related environmental sciences |
| Zdroj: | Environmental Science & Technology. 51:4165-4172 |
| ISSN: | 1520-5851 0013-936X |
| Popis: | Application of road salts in regions with colder climates is leading to ground and surface water contamination. However, we know little about how modern stormwater management practices affect the movement of road salt through urban watersheds. We investigated groundwater contamination and transport of road salts at two stormwater ponds in Baltimore County, Maryland. In association with the ponds, we documented a plume of contaminated groundwater that resulted in Cl– loadings to the adjacent stream of 6574 to 40 008 kg Cl– per winter, depending on winter snowfall. We also monitored Na+ and Cl– ion concentrations and the temporal dynamics of conductivity at a range of stream sites in watersheds with and without stormwater management ponds. Streams draining watersheds with stormwater ponds had consistently higher conductivities and Cl– concentrations during base flow conditions and often exhibited greater peaks in Cl– and conductivity associated with winter storms and subsequent melting events, despite the d... |
| Databáze: | OpenAIRE |
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