This is a definitive contract awarded by the Department of the Interior's National Park Service Northeast Region to THD Contract Services LLC, a minority-owned small business limited liability company, to replace the HVAC systems at the Hopewell Furnace National Historic Site in Elverson, Pennsylvania. The $24,126.00 firm fixed-price contract involves the removal and installation of new, energy-efficient HVAC units in the Bally building. The contract was set aside for total small business participation and was awarded under FAR 13 procedures.