In order to estimate the number of people who will use the proposed facility, we need to know the residential density in the area. The most accurate way to do this is using a Geographic Information System (GIS). Iii. Using block-level population data from the U.S. Census, calculate the residential density of the area between zero and 800 meters of the facility, between 801 and 1,600 meters, of the facility, and between 1,601 and 2,400 meters of the facility. Enter the result for each area into the appropriate field.