Tag Archives: mitigation

Residential Radon Gas Testing – Mold and Indoor Air Quality Inspection by ScanTech Technical Consulting

Radon is one of the leading causes of lung cancer

Radon is one of the leading causes of lung cancer in the United States

In a rush to test your home for radon gas or radioactivity in natural stone such as granite or marble? Did you know that radon is the 2nd leading cause of lung cancer? (Smoking is 1st and radon gas synergistically increases mortality rates for smokers)

While it is not well known, radon gas levels EXCEED EPA action limits of 4 picoCuries/liter (pCi/L) in up to 10 % of all homes in Dallas county with an additional 14 % falling into the marginal range of 2 – 4 pCi/L. This means that 1 out of 4 homes (10 % + 14 % = 24%) in Dallas either have a radon issue or fall into a caution category. Other counties, such as Tarrant, Collin and Denton are not immune either. (see the link below on Radon FAQ from ScanTech for more details)

Example areas of the Metroplex (not a complete or comprehensive list) which have been found by ScanTech testing to have excess radon levels which are statistically higher than the 24 % quoted above include:

  • North Dallas and Far North Dallas
  • Lake Highlands
  • University Park
  • Highland Park
  • Park Cities area
  • Richardson
  • Arlington

ScanTech now has the capability to test and get results within as little as 24 hours of initial deployment using a high quality digital tester in case your option period is about to expire.

Our services are both faster and cheaper than competing methods or companies and we have been performing radon testing for homeowners in the DFW area for over 10 years.

Testing is performed by an engineering graduate experienced in radioactivity measurements,  indoor air quality testing including mold inspection, formaldehyde and radon gas testing.

AARST NRPP National Radon Testing Professional Certified

AARST-NRPP Nationally Certified Radon Residential Measurement Provider ID # 108991 RT*

*Meets HUD, Fannie Mae, Freddie Mac and GSA requirements

Mold Assessment Consultant – Texas Dept. of Health Service License # MAC1387

(Activated charcoal short term radon test kits are accurate as well, but typically require at least 4 business days to get results under best case conditions and a complete kit deployment and pickup service is almost always more expensive due to the additional travel)

Call / text to 214.912.4691 – please include physical address, square footage property and email

More information is available here:

RADON FAQ Dallas /Fort Worth — DFW North Texas Area

http://www.indoorairqualitytestingdallas.com/

http://www.scantech7.com/formaldehyde-indoor-air-quality-testing-services-dallas-fort-worth/

Radon Deaths United States Annually

Annual Radon Deaths Updated Chart

Cities for radon / air quality inspection services include: Dallas, Austin, Houston, San Antonio, Spring, The Woodlands, Round Rock, Plano, Highland Park, University Park, Park Cities, Arlington, Fort Worth, Grapevine, Frisco, Denton, McKinney, Allen, Lewisville, Irving, Mesquite, Bedford, Euless, Richardson, Coppell, Grand Prairie, Garland, Addison, Farmers Branch, Rockwall, Carrollton, Parker, Rowlett, Lucas, Fairview, Park Cities, Keller, Roanoke, The Colony, Highland Village, Lake Dallas, Corinth, Prosper, Duncanville, Lancaster, Rowlett, Royse City, Trophy Club, Southlake and Hurst. Counties served include Dallas, Collin, Denton, Tarrant and Rockwall County.

 

Radon Gas Mitigation Solutions in Brief

While I do not personally perform radon mitigation, I wanted to share in brief what is generally entailed. The cost in the Dallas area for reducing radon below the EPA action limit of 4.0 pCi/l varies depending on the construction / size of the house and how high the levels are. In general, you can expect an estimate of anywhere from $2000 – $5000.

It is suggested that the solution follow the ASTM E-2121 standard for lowering radon and that information can be found in detail here:

http://www.astm.org/Standards/E2121.htm

While homes that contain excessive radon can be found in every state in the nation, many people (such as in Texas) are not aware that it is a problem, nor is testing / mitigation required by Texas law as of this writing. However it is not unusual for some relocation companies to require testing for radon gas first as a condition of a real estate purchase.

Bear in mind that radon levels do fluctuate with weather conditions and home ventilation, so before investing in a mitigation expense, it may be worth testing more than once.

The main idea behind mitigation is to ventilate the excess radon (which is heavier than air) to the outside so as to minimize impact to occupants. The method by which this is done depends on whether you have a basement (rare in the Dallas/Ft. Worth area) have a pier and beam or slab on grade foundation.

For slab foundations, sealing the interior spaces from the ground is generally not enough, and often a soil suction system is required to actively draw the radon out via a vent pipe and specialized fan. These systems are generally referred to as active soil depressurization, sub-slab depressurization or just simply soil suction.

In some cases, a heat exchanger or ERV (Energy Recovery Ventilator) can recover some of the energy lost in the process of exchanging the vented radon to the outside with fresh air.

For pier and beam foundations (houses with crawlspaces) you can cover over the base soil with a special heavy duty plastic sheet whose underside connects to a ventilation system similar to the one described above in a method known as sub-membrane suction.

Sub-membrane Suction Radon Mitigation

Sub-membrane Suction Radon Mitigation