The Superfund proximity indicator is reflective of the total count of sites proposed and listed (final) on the National Priorities List (NPL) in each block group within 5 km of the average resident in a block group, divided by distance, calculated as the population-weighted average of blocks in each block group.
The RMP facility proximity is reflective of the total count of RMP facilities in each block group within 5 km of the average resident in a block group, divided by distance, calculated as the population-weighted average of blocks in each block group
The hazardous waste proximity indicator is reflective of the total count of hazardous waste facilities in each block group within 5 km of the average resident in a block group, divided by distance, calculated as the population-weighted average of blocks in each block group. Hazardous waste facilities are defined as Resource Conservation and Recovery Act…
The UST indicator quantifies the relative risk of being affected by a LUST for a block group. The indicator is derived by the weighted sum of active LUSTs and sum of active and temporarily out of service USTs within a certain distance from a block group.
The ozone indicator in EJScreen reflects potential ozone exposure measured in terms of summer seasonal daily average maximum concentrations in an 8-hour period measured in parts per billion. Ozone information included in EJScreen highlights areas across the U.S. that are not meeting the national ambient air quality standard for ozone. In other words, the levels…
The Diesel PM indicator is the estimated concentration of Diesel PM as provided by the 2017 Air Toxics update. The value of the indicator is in µg /m3 , and reported at the Census tract level. Block group level values are assigned by repeating each parent tract level value.