The U.S. Geological Survey's Eastern Ecological Science Center at Patuxent Research Refuge in Laurel, Maryland requires annual preventative maintenance, routine repair/replacement, and emergency services for its HVAC system. The contract will have a base year plus four option years and is a 100% small business set-aside under NAICS 238220 with a $19 million size standard. A site visit is scheduled for August 11, 2026, at 10:00 AM ET, with attendance strongly encouraged and RSVP required 24 hours in advance. The anticipated award date is August 28, 2026, and interested vendors must be registered in SAM.gov. Quotes will only be accepted via email, not fax.