The National Park Service requires a contractor to remove, replace, and upgrade heating and ventilation systems, and to add new air conditioning, at two maintenance buildings within the John Muir National Historic Site. The project's construction magnitude is between $25,000 and $100,000. This procurement is set aside exclusively for Small Business concerns under NAICS code 238220. The Government intends to award a single, firm-fixed-price contract based on a comparative evaluation of price, technical capability, and past performance. An organized site visit is tentatively scheduled.