On this page:

• Resident Air Screening Level
• Worker Air Screening Level
• Groundwater Screening Level
• Soil Gas Screening Level
• Vapor Intrusion Screening Level Supporting Equations
• Indoor Air Concentration Derived from Soil Gas Concentration
• Indoor Air Concentration Derived from Groundwater Concentration
• Calculation of Risks and Hazards from Indoor Air Concentrations
• Resident Air CDI
• Worker Air CDI
• Using Unit's in ppb
• Modifications of Groundwater Temperatures

Resident Air Screening Level

Noncarcinogenic

Inhalation

Carcinogenic

Inhalation

Mutagenic

Inhalation

Vinyl Chloride

Inhalation

Trichloroethylene

Inhalation

• Trichloroethylene Supporting Equation
  Inhalation
  

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Worker Air Screening Level

Noncarcinogenic

Inhalation

Carcinogenic

Inhalation

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Groundwater Screening Level

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Soil Gas Screening Level

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Vapor Intrusion Screening Level Supporting Equations

• Pure Phase Vapor Concentration
  

• Groundwater Vapor Concentration
  

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Indoor Air Concentration Derived from Soil Gas Concentration

• Calculated Indoor Air Concentration from Soil Gas
  

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Indoor Air Concentration Derived from Groundwater Concentration

• Calculated Indoor Air Concentration from Groundwater
  

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Calculation of Risks and Hazards from Indoor Air Concentrations

• Excess Lifetime Cancer Risk
  
• Hazard Quotient
  

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Resident Air CDI

Chronic Daily Intake Resident Noncarcinogenic

Chronic Daily Intake Resident Carcinogenic

Chronic Daily Intake Resident Mutagenic

Chronic Daily Intake Resident Vinyl Chloride

Chronic Daily Intake Resident Trichloroethylene

• Trichloroethylene Supporting Equation
  Inhalation
  

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Worker Air CDI

Chronic Daily Intake Worker Noncarcinogenic

Chronic Daily Intake Worker Carcinogenic

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Using Units in ppb

• ppb Unit Conversion
  

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Modifications of Groundwater Temperatures

To Determine Unitless Henry's Law Constant at a Groundwater Temperature of 25° Celsius

To Determine Unitless Henry's Law Constant at a Groundwater Temperature of 25° Celsius

To Determine Vapor Pressure at a Groundwater Temperature other than 25° Celsius

To Determine Pure Phase Vapor Concentration at a Groundwater Temperature other than 25° Celsius

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