Browsing by Author "Teasley, Rebecca"

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    Compressed Air Energy Storage (CAES) in Northern Minnesota Using Underground Mine Workings and Above Ground Features
    (University of Minnesota Duluth, 2015) Fosnacht, Donald R; Wilson, Elizabeth J; Marr, Jeffrey D; Carranza-Torres, Carlos; Hauck, Steven A; Teasley, Rebecca
    The goal of this research project is to determine the potential viability, environmental sustainability, and societal benefits of CAES, as a vital, enabling technology for wind turbine based power generation. The intent of this research is to provide a clear roadmap for CAES development in Minnesota. This project is multifaceted and draws resources across the University System and from key industrial partners: Great River Energy and Minnesota Power. The results from the project will provide vital information to decision makers on the potential of CAES and give guidance on how the technology can be implemented using the unique assets of the Minnesota’ various Iron Ranges (Mesabi and Cuyuna) or in other areas, so that renewable mandates and greenhouse gas reduction can be effectively accomplished. The results show that the topography and water resources exist at various sites that could allow a 100 to 200 MW facility to be constructed if the overall economic, mineral rights, and environmental issues associated with a given site can be properly managed. This report delves into the possibilities and outlines selection criteria that can be used for site selection. Other information is developed to compare the potential economic impact of implementation of the project within the constraints of the factors that can be monetized using the current policy environment. Finally, potential life cycle, regulatory, environmental, and permitting issues that are associated with implementation of the concept are discussed.
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    Data for Impacts of beaver dams on low-flow hydrology and hydraulics, Knife River, Minnesota
    (2021-06-07) Gran, Karen B; Behar, Hannah; Burgeson, Emma; Dymond, Salli; Dumke, Josh; Teasley, Rebecca; kgran@d.umn.edu; Gran, Karen B
    These data were collected as part of a two-year investigation into the impacts of beaver dam removal on low-flow hydrology and hydraulics in the Knife River, Minnesota, USA. Eight sub-basins were monitored for two years, organized as four pairs of sub-basins. The study focused on small headwater sub-basins, with areas ranging from 1.58 to 6.4 km2. In 2018, all of the study basins had active beaver dams. In 2019, the beavers were removed and dams notched in half of the sub-basins, one half of each of the four pairs. Data collection continued throughout the 2019 season measuring impacts post-dam removal.