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"The City of Austin (City) requested that a preconstruction groundwater assessment be completed to address potential impacts of the construction of the Jollyville Transmission Main tunnel project. This assessment evaluated the groundwater conditions in the project area and assessed the potential impacts of tunnel and shaft construction on groundwater flow in the project area, in particular, on springs that are found on hillsides and on flow in Bull Creek. Springs and seeps in the project area provide habitat for the Jollyville Plateau Salamander, a candidate species for listing under the Endangered Species Act that occupies habitat along Bull Creek. The base flow in Bull Creek is seasonally supplied by discharge from springs along the creek, which originate as groundwater discharge from the hillsides. The City is taking actions to avoid or mitigate potential groundwater impacts from construction and operation of the four access shafts and the tunnel that comprise the Jollyville Transmission Main (JTM) project. Adverse impacts on spring flows in the vicinity of project facilities would be considered a significant environmental issue for the project." -- Authors Open Access - Permission by Author(s) See Extended description for more information.
United States, Geology
City of Austin
"Preconstruction groundwater assessment for the Jollyville transmission main WTP4" (2010). KIP Data Sets and Technical Reports. 110.