IEQ4: Radon Exposure Prevention

(1-3 points)

PURPOSE

Reduce occupant exposure to radon.

CRITERIA

Select one option below:

Option A. Radon Test After Substantial Completion (1 point)

Project team shall conduct a radon test of the building and provide test results to the building owner. Radon test must comply with EPA guidelines. If test indicates a radon concentration greater than four picocuries per liter (pCi/L), project must follow EPA guidelines to reduce levels to below 4 picocuries per liter (pCi/L).

Option B. Install Soil Gas Vent System (3 points)

A passive radon vent system shall be installed in compliance with EPA guidelines for “Model Standards and Techniques for Control of Radon in New Residential Buildings.” After substantial completion, perform radon test as indicated in Option A. If radon levels greater than four picocuries per liter are measured, convert passive system to active system with fan(s) and retest. Repeat modifications and testing until radon level is below acceptable level.

VERIFICATION 

• Construction Documents include soil gas vent system 
• Provide radon test results to owner and ECLC Technical Advisor 
• Site Inspection by ECLC Technical Advisor or photo documentation

RESOURCES

EPA Radon Resource Page www.epa.gov/radon