Name: Acetaldehyde air toxics - Respiratory risk (hazard quotient)
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates non-cancer respiratory risk (hazard quotient) due to acetaldehyde air toxics from the National Air Toxics Assessment. A hazard quotient is defined as the ratio of the potential exposure to the substance and the level at which no adverse effects are expected. A hazard quotient less than or equal to one indicates that adverse noncancer effects are not likely to occur, and thus can be considered to have negligible hazard.
Name: Acetaldehyde air toxics - Cancer risk per million
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates cancer risk per million due to acetaldehyde air toxics from the National Air Toxics Assessment. Cancer risk is defined as the probability of contracting cancer over the course of a lifetime, assuming continuous exposure (assumed in NATA to be 70 years).
Name: Acrolein air toxics - Respiratory risk (hazard quotient)
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates non-cancer respiratory risk (hazard quotient) due to acrolein air toxics from the National Air Toxics Assessment. A hazard quotient is defined as the ratio of the potential exposure to the substance and the level at which no adverse effects are expected. A hazard quotient less than or equal to one indicates that adverse noncancer effects are not likely to occur, and thus can be considered to have negligible hazard.
Name: Arsenic air toxics - Cancer risk per million
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates cancer risk per million due to arsenic air toxics from the National Air Toxics Assessment. Cancer risk is defined as the probability of contracting cancer over the course of a lifetime, assuming continuous exposure (assumed in NATA to be 70 years).
Name: Benzene air toxics - Cancer risk per million
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates cancer risk per million due to benzene air toxics from the National Air Toxics Assessment. Cancer risk is defined as the probability of contracting cancer over the course of a lifetime, assuming continuous exposure (assumed in NATA to be 70 years).
Name: Butadiene air toxics - Cancer risk per million
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates cancer risk per million due to butadiene air toxics from the National Air Toxics Assessment. Cancer risk is defined as the probability of contracting cancer over the course of a lifetime, assuming continuous exposure (assumed in NATA to be 70 years).
Name: Chromium air toxics - Respiratory risk (hazard quotient)
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates non-cancer respiratory risk (hazard quotient) due to chromium VI (hexavalent) air toxics from the National Air Toxics Assessment. A hazard quotient is defined as the ratio of the potential exposure to the substance and the level at which no adverse effects are expected. A hazard quotient less than or equal to one indicates that adverse noncancer effects are not likely to occur, and thus can be considered to have negligible hazard.
Name: Chromium air toxics - Cancer risk per million
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates cancer risk per million due to chromium VI (hexavalent) air toxics from the National Air Toxics Assessment. Cancer risk is defined as the probability of contracting cancer over the course of a lifetime, assuming continuous exposure (assumed in NATA to be 70 years).
Name: Diesel PM air toxics - Respiratory risk (hazard quotient)
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates non-cancer respiratory risk (hazard quotient) due to diesel PM air toxics from the National Air Toxics Assessment. A hazard quotient is defined as the ratio of the potential exposure to the substance and the level at which no adverse effects are expected. A hazard quotient less than or equal to one indicates that adverse noncancer effects are not likely to occur, and thus can be considered to have negligible hazard.
Name: Formaldehyde air toxics - Respiratory risk (hazard quotient)
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates non-cancer respiratory risk (hazard quotient) due to formaldehyde air toxics from the National Air Toxics Assessment. A hazard quotient is defined as the ratio of the potential exposure to the substance and the level at which no adverse effects are expected. A hazard quotient less than or equal to one indicates that adverse noncancer effects are not likely to occur, and thus can be considered to have negligible hazard.
Name: Formaldehyde air toxics - Cancer risk per million
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates cancer risk per million due to formaldehyde air toxics from the National Air Toxics Assessment. Cancer risk is defined as the probability of contracting cancer over the course of a lifetime, assuming continuous exposure (assumed in NATA to be 70 years).
Name: Naphthalene air toxics - Respiratory risk (hazard quotient)
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates non-cancer respiratory risk (hazard quotient) due to naphthalene air toxics from the National Air Toxics Assessment. A hazard quotient is defined as the ratio of the potential exposure to the substance and the level at which no adverse effects are expected. A hazard quotient less than or equal to one indicates that adverse noncancer effects are not likely to occur, and thus can be considered to have negligible hazard.
Name: Naphthalene air toxics - Cancer risk per million
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates cancer risk per million due to naphthalene air toxics from the National Air Toxics Assessment. Cancer risk is defined as the probability of contracting cancer over the course of a lifetime, assuming continuous exposure (assumed in NATA to be 70 years).
Name: PAH / POM air toxics - Ambient concentration (μg/m3)
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates ambient concentration (microgram/m3) of polycyclic aromatic hydrocarbons (PAH) / polycyclic organic matter (POM) from the National Air Toxics Assessment.
Name: PAH / POM air toxics - Cancer risk per million
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates cancer risk per million due to polycyclic aromatic hydrocarbons (PAH) / polycyclic organic matter (POM) air toxics from the National Air Toxics Assessment. Cancer risk is defined as the probability of contracting cancer over the course of a lifetime, assuming continuous exposure (assumed in NATA to be 70 years).
Description: This map estimates non-cancer neurological risk (hazard quotient) due to lead air toxics from the National Air Toxics Assessment. A hazard quotient is defined as the ratio of the potential exposure to the substance and the level at which no adverse effects are expected. A hazard quotient less than or equal to one indicates that adverse noncancer effects are not likely to occur, and thus can be considered to have negligible hazard.
Name: Respiratory risk (hazard index) due to cumulative air toxics
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates non-cancer respiratory risk (hazard quotient) due to cumulative air toxics from the National Air Toxics Assessment, expressed as a hazard index. A hazard index is defined as, The sum of hazard quotients for toxics that affect the same target organ or organ system. A hazard index (HI) of 1 or lower means air toxics are unlikely to cause adverse noncancer health effects over a lifetime of exposure.
Name: Non-cancer neurological risk (hazard index) due to cumulative air toxics
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates non-cancer neurological risk (hazard quotient) due to cumulative air toxics from the National Air Toxics Assessment, expressed as a hazard index. A hazard index is defined as, The sum of hazard quotients for toxics that affect the same target organ or organ system. A hazard index (HI) of 1 or lower means air toxics are unlikely to cause adverse noncancer health effects over a lifetime of exposure.
Name: Cancer risk per million due to cumulative air toxics
Display Field: NAME10
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This map estimates cancer risk per million due to cumulative air toxics from the National Air Toxics Assessment. Cancer risk is defined as the probability of contracting cancer over the course of a lifetime, assuming continuous exposure (assumed in NATA to be 70 years).