IEMA - Guide to Radon Mitigation         (Illinois Emergency Management Agency)

    Your radon level is 4 picocuries per liter (pCi/L) or higher. What are your options?

    Contact a mitigation professional licensed by DNS to reduce the radon levels in your home.

    Request two or three price estimates from licensed mitigation professionals. The cost of a radon
    reduction system generally    ranges from $900 to $2500, depending on characteristics of the house
    and choice of radon reduction methods.

    Talk to your mitigator and be sure you understand the mitigation design.

    Residents of a dwelling may install a mitigation system in their own dwelling; however without proper
    equipment or technical  knowledge, you could actually increase your radon level or create other
    potential hazards.


















    IEMA  Assures Consumer Protection

  • IEMA-licensed mitigation professionals have passed the U.S. Environmental Protection Agency
    (USEPA) radon qualification course and exam, or an equivalent course and exam approved by
    the department.

  • IEMA-licensed radon professionals work to a Quality Assurance Program and a Worker
    Protection approved by the department.

  • IEMA investigates and resolves complaints and non-compliance reports.

  • IEMA performs performance audits on a regular basis to evaluate individual professional
    compliance.

  • IEMA radon regulations ensure that radon measurements and mitigations performed by
    licensed professionals are standardized throughout the state

    Mitigation Systems Reduce Radon By:

  • Collecting radon prior to entry into the building and discharging it to a safe location. Modifying
    building pressure differentials. Diluting radon concentrations with increased ventilation.

    Mitigation Systems In Illinois Must Include:

  • Effective radon reduction
  • Unobtrusive and permanent installation
  • Quiet operation
  • Energy efficient operation and maintenance
  • A system function indicator
  • A primary suction point independent of the sump pit
  • Sump covers with observation ports
  • Exhaust above the highest eave
  • Sub-Slab Pressurisation (SSD)
















    Active sub-slab suction uses a fan to draw radon from beneath the house. SSD systems collect radon
    prior to entry and  exhaust it to a safe location above the highest eave.

    Sub-Membrane Pressurisation (SMD)

    SMD is performed in crawl spaces and areas that are directly in contact with rock or soil. Suction is
    created:

  • Under a specified polyethylene or equivalent flexible material (plastic sheet) permanently
    installed over exposed soil or rock
  • By a fan drawing radon from beneath the plastic sheet and exhausting the radon outdoors
    above the highest eave.
  • Discharging Above The Highest Eave

    Discharge above the highest eave ensures that there is significant dilution of exhaust by outdoor air
    to minimize re-entry into  the house and minimize exposure to persons in the yard and neighboring
    areas. To ensure public health and safety, IEMA requires that the point of discharge from fan-
    powered soil Pressurisation systems be located:

  • Above the highest eave of the roof;
  • As close to the roof ridge line as possible;
  • 10 feet from any window, door or other opening (into the building) that is less than 2 feet below
    the exhaust point;
  • 10 feet or more from any opening to an adjacent building

    Sealing:

    Sealing enhances radon reduction techniques, such as SSD, SMD and Heat Recovery Ventilation.
    Reducing the loss of conditioned air increases radon reduction system effectiveness and cost
    efficiency. DNS does not recommend the use of sealing alone to reduce radon concentrations.
    Sealing alone has not been shown to lower radon levels significantly or consistently.

    New Construction Systems:

    Since 1995, radon control methods have been part of the Council of American Building Officials
    (CABO) "One and Two Family Dwelling Code." Several Illinois municipalities have adopted variations
    of the CABO code requiring the installation of radon control methods in newly constructed residences.
    These methods are known as passive and skeletal new construction systems. Passive or skeletal new
    construction systems are not acknowledged mitigation systems and may or may not reduce radon
    concentrations in homes to below the USEPA’s Action Level, 4.0 picocuries per liter of air (4pCi/L).
    IEMA encourages homeowners to test their home to determine the actual radon levels. With test
    results of 4 pCi/L or more, passive and skeletal new construction systems should be converted to
    active soil Pressurisation systems by mitigation professionals licensed by IEMA. IEMA recommends
    that post-mitigation measurements be performed by measurement professionals licensed by IEMA in
    order to ensure defensibility and reliability of test results.

    Passive New Construction:

    Passive new construction systems rely solely on the convective flow of air upward in the vent pipe for
    sub-slab Pressurisation. The system consists of a vertical vent pipe routed through conditioned space
    from the suction pit to 12 inches above the roof.

    Skeletal New Construction:

    A skeletal system is a system that is designed for the installation of a vent fan and may consist of
    multiple vent pipes. This includes vertical and angled runs that are not necessarily routed through
    living space that may be joined to a single termination above the roof or may terminate separately
    above the roof.
    Always Perform a Post-Mitigation Test!

    Post-mitigation tests are important evaluators of actual system function:

    Professional post-mitigation measurements must be performed to the applicable DNS measurement
    protocol. The Adopted Rule, 32 Illinois Administrative Code, Part 422, prohibits mitigation
    professionals from performing radon measurements at a residence where they have installed a
    mitigation system.

    For additional information about radon, radon measurement and mitigation, call IEMA at:
    (800) 325-1245 or visit the
    IEMA website at:  Illinois State Radon Information

TEL:
630-225-7997
About
Mitigation

To Schedule a Radon
Test,
630-225-7997
Video
CHICAGO - ILLINOIS - NAPERVILLE
Radon Testing
by Illinois Licensed Radon Professionals

For a list of additional

ILLINOIS LICENSED RADON
MITIGATION COMPANIES:

Please visit:

www.radon.illinois.gov
Residential Radon Testing
ILLINOIS  LICENSED
RADON MITIGATION
COMPANIES
Radon Deduction Systems, Inc
NAPERVILLE, IL,
TEL: 630-357-9474
Dave Masa
www.theradonman.com
Professional Radon Systems, Inc,  
 AURORA, IL
TEL: 630-236-4200
Eric Lewandowski
www.proradon.com
Accurate Radon
WEST CHICAGO, IL
TEL: 630-876-0800
Rich Whisler       
www.accurateradon.com
Suburban Mitigation Specialists
JOLIET, IL
TEL: 815-530-4545
Leo Perez
Heritage Radon Mitigation
ST. CHARLES, IL
TEL: 630-377-9156
Jeffrey Schuman
www.heritageradon.com
VSI Radon Reduction Corp.
LAKEMOOR, IL
TEL: 815-344-1100
Keith Volsted
www.radongas.com
Du Page Radon Contractors, Inc.,  
NAPERVILLE, IL  
TEL: 630-836-1918
Mike Rumak         
www.dupageradon.com
Elliot & Associates
HINSDALE, IL
TEL: 630-325-8005
Elliott Wall
sales@radonillinois.com
Radon Management Systems
OSWEGO, IL
TEL: 630-551-0700
Earl Wall
Radon Reduction Company
GLEN ELLYN, IL
TEL:630-544-1830
Isaak Charny
Radon Rescue
ELGIN, IL
Tel: 847-888-2001
Nick Nicholas

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