The U.S. Fish and Wildlife Service requires professional microbial assessment and remediation services for Quarters #1 at Culebra National Wildlife Refuge in Culebra, Puerto Rico, to address mold and moisture intrusion. The estimated budget for this firm-fixed-price contract is between $15,000 and $21,000. Performance is anticipated to occur over 90 calendar days, from July 1, 2026, through September 29, 2026. This opportunity is a total small business set-aside under NAICS code 236220, with a size standard of $19.0 million. The contractor must demonstrate relevant experience and comply with federal, state, and industry standards for mold remediation and indoor environmental quality.