The US Fish and Wildlife Service has a requirement for Roof Replacement of the WILAPA NWR-JULIA BUTLER HANSEN REFUGE in Wahkiakum, WA. The bases of award will be lowest price fair, and reasonable NAIC... The US Fish and Wildlife Service has a requirement for Roof Replacement of the WILAPA NWR-JULIA BUTLER HANSEN REFUGE in Wahkiakum, WA. The bases of award will be lowest price fair, and reasonable NAICS code is 238160 and the small business size standard is $19 Million. The magnitude of construction is Between $25,000 and $50,000.