The U.S. Fish and Wildlife Service is seeking information from businesses capable of providing design-build services for critical repairs to the sanitary sewer system and harbor infrastructure at Midway Atoll National Wildlife Refuge. The project involves replacing major sewer system components and repairing or replacing inner harbor and south seawall infrastructure, with a construction magnitude exceeding $10,000,000. Performance timelines include 730 days from the Notice to Proceed for sewer system replacement and NEPA compliance, and up to 1,825 days for all other tasks. Services will be performed at Midway Atoll National Wildlife Refuge. This is a sources sought notice for market research only, not a solicitation for proposals.