Implement radon control measures

Rationale: Radon is a carcinogen found in soil and rock that can seep into lower levels of buildings through cracks in the foundation; testing, monitoring and controlling radon gas effectively limits occupant exposure reducing lung cancer risk.

Requirements

Demonstrate compliance with one of the options below:

Option 1 - Radon Testing or Monitoring - (Full Credit):

To achieve full credit, demonstrate compliance with all of the following requirements:

1. Test or monitor for radon according to the following sections in the Fitwel Radon Testing or Monitoring Requirements:

• frequency
• qualifying devices
• required locations
• methods
• metrics. 

The Fitwel v3 Radon Testing and Monitoring Protocol can be found here. 

Option 2 - No Applicable Testing Locations - (Full Credit):

Demonstrate compliance with the below requirements:

1. Confirm that the project does not include any of the following spaces:
   • interior spaces located at or below grade
   • interior spaces with floors or walls that contact the ground

Option 3 - Radon Control Measures - (Partial Credit):

The project may achieve partial credit by demonstrating compliance with all of the following requirements:

1. For projects where the recommended limits for radon levels are not met, establish and implement a radon mitigation and remediation plan that includes a minimum of one of the following interventions:

• active soil depressurization or soil suction
• home or room pressurization, which uses a fan to blow air into the spaces with elevated radon levels
• installation of a heat recovery ventilator or an air-to-air heat exchanger
• natural ventilation of spaces with elevated radon levels
• sealing openings in surfaces between the indoors and the soil.

Compliance Documentation

Types of compliance documentation required:

• Annotated map/plan
• Uploaded protocol
• Certified statements