The US Fish and Wildlife Service has a requirement for RESIDENCE WATER FILTRATION SYSTEM at KENAI NWR in Soldotna, AK. The bases of award will be lowest price fair and reasonable NAICS code is 238220 ... The US Fish and Wildlife Service has a requirement for RESIDENCE WATER FILTRATION SYSTEM at KENAI NWR in Soldotna, AK. The bases of award will be lowest price fair and reasonable NAICS code is 238220 and the small business size standard is $19 Million. The magnitude of construction is Less than $25,000.