Report on a formation thermal conductivity test that was performed on the geothermal test bore at Ulbrich Heights at 38 Louis Circle Lane in Wallingford, Connecticut. Data are applicable only within the Wallingford region and should not be extrapolated for other climatic and geographic regions. The analysis assumes no systemic defects in the borehole prior to and during installing and testing. A graphite and Bentonite grouting mixture was assumed to be consistent throughout borehole length. These data were collected as part of the Community Geothermal Heating and Cooling Design and Deployment Grant Program. This associated project's goal is to design and develop a district geothermal heating and cooling system that will serve at least 50% of the heating and cooling load of a 132-unit, affordable housing complex in Wallingford, CT. The project is led by Connecticut Department of Energy and Environmental Protection (DEEP). Borehole drilling and thermal conductivity testing were conducted by Connecticut Wells Inc. and data were analyzed by Geothermal Resource Technologies Inc. (GRTI).