This indicator reports total road network density in terms of road miles per square mile. Source Environmental Protection Agency, EPA – Smart Location Database, 2021. Source Description The Environmental Protection Agency (EPA) Smart Location Database (SLD) is a nationwide geographic data resource for measuring location efficiency. It includes more than 90 attributes summarizing characteristics such…
The National Walkability Index (2021) is a nationwide index score developed by EPA that ranks block groups according to their relative walkability using selected variables on density, diversity of land uses, and proximity to transit from the Smart Location Database. The block groups are assigned their final National Walkability Index scores on a scale of…
This indicator reports the employment and household entropy score from EPA’s Smart Location Dababase, 2021. This score represents the characteristics of the built environment known to be supportive of walking, especially mixed community land use. The higher the score, the higher diversity in community land use. Source Environmental Protection Agency, EPA – Smart Location Database,…
This indicator measures the proportion of the population living within 0.5 miles of a GTFS or fixed-guideway transit stop. Transit data is available from over 200 transit agencies across the United States, as well as all existing fixed-guideway transit service in the U.S. This includes rail, streetcars, ferries, trolleys, and some bus rapid transit systems….
This indicator reports the count of LUSTs (multiplied by a factor of 7.7) and the number of USTs within a 1,500-foot buffered block group. Areas with higher UST scores are placed higher in percentile (national ranking). The percentile could be interpreted as, for example, for a place at the 80th percentile nationwide, 20% (i.e., 100…
This indicator reports the count of RMP (potential chemical accident management plan) facilities within 10 km, each divided by distance in km. Areas with higher RMP Facility proximity scores are placed higher in percentile (national ranking). The percentile could be interpreted as, for example, for a place at the 80th percentile nationwide, 20% (i.e., 100…
This indicator reports the count of vehicles per day (average annual daily traffic) at major roads within 10 kilometers (km), divided by distance in km. Although proximity to roads can provide access to amenities, in EJScreen, the indicator is designed to screen for the negative aspects of very close proximity to very high volumes of…
This indicator reports the count of proposed and listed NPL sites (deleted sites excluded) within 10 km, each divided by distance in km. Areas with higher Superfund proximity scores are placed higher in percentile (national ranking). The percentile could be interpreted as, for example, for a place at the 80th percentile nationwide, 20% (i.e., 100…
This indicator reports the count of hazardous waste management facilities (TSDFs and LQGs) within 10 km, each divided by distance in km. Areas with higher RMP Facility proximity scores are placed higher in percentile (national ranking). The percentile could be interpreted as, for example, for a place at the 80th percentile nationwide, 20% (i.e., 100…
This indicator reports the RSEI modeled Toxic Concentrations at stream segments within 500 meters, divided by distance in kilometers (km). It quantifies a block group’s relative risk of exposure to pollutants in downstream water bodies. Areas with higher wastewater discharge values are placed higher in percentile (national ranking). The percentile could be interpreted as, for…