Objective:  

Conversion of a property in Southern Germany by an American investor.

Property: 

Former Barracks, 32 acres with a total of 45 existing buildings, open warehouses and bunker.

Problem situation:

• Property is located in a radon risk area (base of granite)
• preliminary studies with radon concentrations up to 380 Bq / m³ air
• risk situation is familiar to the investor through legal situation in the US
• project financing jeopardized due to incalculable redevelopment cost risks  and health care costs

Results:

• solid measurement variations of radon levels between 67 and 1,000 Bq / m, with peaks up to 4,300 Bq / m³ deliver typical heterogeneous exposure image
• even average radon concentration of about 344 Bq / m³ is already well above the value of the U.S. EPA and the recommendation of SSK

Measures:

• Additional investment for active ventilation measures
• adjusting the land use concept to reduce employee exposure to radon
• Radon monitoring program