Select Target UMTRCA WL Standard

0.02 Other:

Select Target Risk

10^-6 10^-5 10^-4 Other:

Select Target Dose (mrem/yr)

1 Other:

Select Exposure Scenario

Resident Commercial Worker

Predict indoor air concentrations and WL from measured media concentrations

No Yes

Select Site Info Type

Defaults Site Specific

Select source for isotope physical properties and toxicity values

Database hierarchy defaults User-provided

Select Units

pCi Bq

Groundwater Temperature (^° C)

Attenuation Factor Sub-Slab (unitless)

For sub-slab soil gas, the recommended generic attenuation factor (α_ss) is 0.03.

Attenuation Factor Groundwater (unitless)

For groundwater, the recommended generic attenuation factor (α_gw) is 0.001.