Basic Criteria for all Active Systems

At a minimum, the following general requirements or national mitigation standards should be observed:

• All components of radon mitigation systems designed and installed in compliance with the Standards must also be in compliance with the applicable mechanical, electrical, building, plumbing, energy, and fire prevention codes, standards, and regulations of the local jurisdiction.
• When portions of structural framing members must be removed to accommodate radon system components, the amount of the member removed should be no greater than that permitted for plumbing installations by applicable building or plumbing codes.
• Radon system piping should not block window and doors or access to installed equipment.
• Horizontal runs in radon system piping should be sloped to ensure that water from rain or condensation drains downward.

Basic Goals for All Active Systems

• Must be effective in reducing radon As Low As Reasonably Achievable [ALARA] – 4.0 pCi/L is not the goal!
• Permanent, unobtrusive, and quiet
• Durable and capable of indicating system failure
• Economical to install, operate, and maintain
• Exhaust away from vents, windows & other areas of possible re-entry.
• Must have a system failure indicator
• Must be labeled as a radon mitigation system