Sanitary landfills can cause considerable harm to sensitive ecosystems if they are not properly located, designed, and managed. The purpose of the report is to document the proximity of sanitary landfills included in the study in Washington to wetlands and deepwater habitats, (i.e., rivers, lakes, streams, bays, etc.). The sanitary landfills were identified on U.S. Fish and Wildlife Service's National Wetlands Inventory maps. The nearness or proximity of the sanitary landfills to wetlands and deepwater habitats was determined by drawing three concentric regions around the point representing the location of each landfill. The radii of the concentric regions were: 1/4 mile, 1/2 mile, and 1 mile. The data on individual landfills include: (1) general facility/site data, and (2) wetlands/deepwater habitat data. These facilities have the potential to adversely affect sensitive ecosystems.