This layer displays the daily average concentration of ozone and the percentage of days with concetrations of ozone above the National Ambient Air Quality Standard (NAAQS) of 0.075 parts per million in 2019.
This layer displays the daily average concentration of fine particulate matter and the percentage of days with concetrations of fine particulate matter above the National Ambient Air Quality Standard (NAAQS) of 35.0 micrograms per cubic meter in 2019.
This layer displays the daily average concentration of fine particulate matter and the percentage of days with concetrations of fine particulate matter above the National Ambient Air Quality Standard (NAAQS) of 35.0 micrograms per cubic meter in 2017.
This layer displays the daily average concentration of fine particulate matter and the percentage of days with concetrations of fine particulate matter above the National Ambient Air Quality Standard (NAAQS) of 35.0 micrograms per cubic meter in 2018.
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 … Continued
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 … Continued
The air toxics cancer risk indicator is the estimated lifetime inhalation cancer risk from the analyzed carcinogens in ambient outdoor air, as provided by the 2017 Air Toxics data Update. The value of the indicator is persons per million lifetime. … Continued
The air toxics respiratory HI indicator is the respiratory HI from the analyzed carcinogens in ambient outdoor air, as provided by the 2017 Air Toxics Data Update. The data is reported at the Census tract level. Block group level values … Continued
The traffic proximity indicator is based on AADT count divided by distance in meters from the Census block centroid. The proximity score is based on the traffic within a search radius of 500 meters (or further if none is found … Continued
The lead paint indicator is the percentage of occupied housing units built before 1960, calculated from the U.S. Census Bureau’s ACS 5-year summary estimates on age of housing stock. EJScreen uses age of housing stock as a surrogate for potential … Continued