North Village Ground Source Heat Pump ProjectCX(s) Applied: A9, B5.1Date: 03/29/2010Location(s): South CarolinaOffice(s): Energy Efficiency and Renewable Energy, Golden Field Office
Office of NEPA Policy and Compliance
March 29, 2010
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CX(s) Applied: A9, B5.1
Date: 03/29/2010
Location(s): South Carolina
Office(s): Energy Efficiency and Renewable Energy, Golden Field Office
The proposed project will be located in the Northeast quadrant of campus on an approximate 25 acre site and has a total system capacity of 661.5 tons comprised of 258, 2.5-ton heat pumps and 11, 1.5-ton heat pumps. The well field will contain 265 boreholes at depths ranging from 300 to 500 feet. The heat exchange system will be a closed loop type utilizing potable water as the heat exchange media. This will eliminate the risk of contamination to any surrounding ground water in the event of a leak. The recipient states that they will consult with a representative from the South Carolina Department of Natural Resources throughout installation to ensure that this project does not negatively impact any surface or subsurface water ways. However because the heat exchange fluid used will be Propylene Glycol and the effects to ground water resources are completely benign. The system will use high density polyethylene pipe that is heat fused at the joints to minimize the risk of leakage even further. The drilling will be executed by a State licensed and board certified drilling company and both International Ground Source Heat Pump Association and the National Ground Water Association guidelines were used for the design and installation of the system. The land disturbance is projected to be minimal and will occur on previously developed and landscaped land from when the apartments were first built. A Certified Erosion Prevention and Sediment Control Inspector will be managing the installation of this system and will ensure that generally accepted erosion control measures are followed including the use of silt fences, straw bales, and erosion control socks as required.