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Radon in Your Home Presenter information here 4/2014.

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Presentation on theme: "Radon in Your Home Presenter information here 4/2014."— Presentation transcript:

1 Radon in Your Home Presenter information here 4/2014

2 Learning Objectives  Knowledge: Origin of Radon & Health Risk.  Comprehension: Influences of radon entry into homes.  Application: Options for testing and mitigation.

3 A Citizen's Guide to Radon: The Guide to Protecting Yourself and Your Family from Radon

4  Naturally occurring  Radioactive gas  Colorless  Odorless “ Radon What Is It?

5 Radon 3.8 days Radium 1,620 years Uranium 4.47 million years Lead Polonium Bismuth Radon – radioactive gas

6 Radon Measurement  Radon is measured in picoCuries per liter of air (pCi/L). While no level of radon exposure is considered safe, EPA has set an action level at 4 pCi/L  1 picoCurie is equal to 0.037 radioactive disintegrations per second  According to EPA, if levels are at or above 4 pCi/L, the home should be mitigated  take precautionary actions between 2-4 pCi/L


8 Radon is the leading cause of lung cancer among non-smokers claiming approximately 21,000 lives annually. Radon Health Concern

9 Inhalation of Radon Decay Products AlphaParticle Radiation Damage to DNA Radon Causes Lung Cancer

10 Radon - A Physician's Guide: The Health Threat With A Simple Solution

11 Radon and Children  Children have smaller lungs and therefore higher breathing rates.  Children spend up to 70% more time indoors than adults on average.  According to the U.S. EPA, 1 in 5 schools has at least one schoolroom with a radon level that exceeds the recommended level of 4 picoCuries per liter (pCi/L) or higher. Children are more susceptible to effects of radon.

12 Radon in soil and rocks under and adjacent to buildings, migrates through foundations, cracks and small openings and concentrates inside buildings. Well Water Building Materials

13 Radon & Granite Countertops ? Not an Issue.

14 What are the radon levels in your community?

15 Testing is the only way to know the radon level of a building. Residential Construction Team

16 short-term/charcoal 3-7 day test long-term/alpha track 3 months to a year test DIY Radon Test Kits

17 DIY Testing - FOLLOW INSTRUCTIONS  Kit Instructions Vary – follow instructions!  12-hour closed-house for 2-7 day test  Place in Lowest “lived-in” area  Place midlevel from floor & ceiling  Out of air flow (ductwork and fans)  Out of kitchen and bathroom

18 Radon Testing and Mitigation Professionals

19 Professional Continuous Monitor Cost $600+$315.00 printer


21 - de-pressurization - wind - - thermal by-passes - - stack-effect - - vented appliances - without dedicated - outside air source - - frozen/wet soils Factors that Increase Radon Levels

22 Radon Mitigation for Existing Homes

23 Consumer's Guide to Radon Reduction: How to Fix Your Home 23

24 Radon Mitigation Sub-slab Depressurization n Most common type of radon mitigation system n Suction created by fan draws radon from beneath the concrete slab and safely vents radon outdoors Fan Attic Depressurization Piping System Discharge

25 Radon Mitigation Sub-Slab Depressurization

26 26

27 Crawlspace Mitigation … Sub-Membrane Depressurization System Fan Attic Depressurization Piping System Discharge

28 Building Radon Out: A Step-by-Step Guide on How to Build Radon- Resistant Homes

29 Building Radon Resistant Homes  Pre-construction testing is costly and is not 100% - not recommend  Homes can be built to prevent radon entry.  Radon-resistant construction includes common building practices and a few added steps.  Radon-resistant features into your new home adds $350-$500 vs. $1,500-$3,000 for existing home.  Homes with radon-resistant features should be tested for radon after occupancy.

30 Radon Resistant Construction Minimum Rough-In Features  4” layer of gas-permeable material (1/4”-2” aggregate) under all concrete slabs and other floor systems in contact with ground;  Soil gas retarder (6 mil poly) under slab or on ground if crawl space  Minimizing entry routes (sumps, floor openings, etc.)  Passive sub-membrane/slab depressurization system  3-inch diameter PVC pipe embedded vertically in the sub-membrane/slab extending up through the house and terminating about the roof surface  Provisions for a vent pipe power source

31 Radon in Water  Radon gas contribution from water – 5% - always focus on radon in air first!  10,000 pCi/L in water adds 1 pCi/L to air  Private wells are greatest problem  Water outgases radon – more from hot H2O

32 Home Buyer's and Seller's Guide to Radon

33 "Healthy Indoor Environment Protocols for Home Energy Upgrades" 33

34 Thank you! Questions? Comments? 34 Radon in Your Home

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