Rarely Considered Health Effects of Radon

Radon – It may be more of a health issue than previously thought.

As we’ve known since about 1986, radon is a residential health issue. In 1986, a worker at a nuclear power plant in Pennsylvania was setting off the radiation detectors on his way into work.  It was determined that the source of his radiation was coming from the radon in his house, not from the nuclear power plant. The federal government bought his house and it has been used as a residential radon lab and study center since. Subsequent to that it was determined that radon gas is the leading cause of lung cancer for non smokers. At some training in March 2021, the instructor pointed out that being in an environment with a radon level of 1pCi/L for 24 hours is equivalent to smoking 2 packs a day.

First, let’s review what is radon and why is it a cause of cancer?  First, radon is a naturally occurring gas, in fact an element. If you remember from High School Chemistry, the Periodic Table of the Elements, radon is an element.  Oxygen, gold, silver, iron are elements as well. However, radon is a radioactive gas. Its origins begin with Uranium 238 in the bedrock in the soil.  A radioactive element spontaneously releases protons, neutrons or electrons. As they do they change their state. Eventually, due to many spontaneous changes and over many, many years, the Uranium 238 eventually becomes radium, another natural element and from Uranium to radium they’ve all been solids stuck in the bedrock.  When radium decays (aka spontaneously changes) it becomes radon which is a gas. For the next 3.8 days, the radon gas rises from the soil and can enter homes or any other building (Schools, businesses, etc.) that have contact with the soil. When radon decays, it A) Releases alpha radiation and B) Turns back into a solid so it basically stops moving. It’s the radiation that is harmful. Radiation in large doses can cause cancer. Any radiation (From the Sun for example causing skin cancer) is dangerous. When you get an X-Ray, for example, there’s some exposure to radiation but since most of us don’t get X-Rays on a regular basis, it’s not harmful. It’s the exposure to radiation that results in the Dental Technician to place the lead lined apron over you so the exposure to the radiation is focused on the area it’s needed.

Second, when radon enters a home it can enter homes with basement, concrete slabs and crawl spaces. While I have not personally done a test resulting in a high radon reading in a house with a crawl space, I have had high radon readings in homes with basements, of course, and with slabs (No basements).

Third, when we inhale radon gas (Red sphere in the diagram below), if it’s not expelled in the next breath, it’s possible that it will go through its radioactive decay while the radon is in our lungs.  Now, just like the sun exposure to our skin, inside our lungs the radon elements are releasing atomic levels of energy in the form of alpha radiation. When it does, it spontaneously changes to lead (Pb), a solid (All following elements are also solids) with a radioactive half life of 26.8 minutes then bam! Another punch of energy but this time it’s beta radiation. Beta radiation is more powerful than alpha radiation and the Pb atom changes to an element called Bismuth (Bi).  In 20 minutes, the Bi spontaneously changes and becomes a nasty element called Polonium (Po). From the site, Polonium-210: Effects, symptoms, and diagnosis (medicalnewstoday.com) there are 25 variations of Po.  Also noted at this site, “Polonium-210 is the deadly poison that was used to kill the former Russian spy, Alexander Litvinenko, in London in 2006. He died of radiation sickness.”

In the radon radio-active-decay process, we see three varieties of Po (Green spheres in the illustration below). Po-218 initially, then Po-214 and eventually Po-210.

All of these characteristics are why the potential to get cancer from radon exists!

That information alone should motivate you to conduct annual radon tests!  But more information was learned at some 2022 training the I attended for my current NJ DEP Radon Measurement Technician licensing. That new information is that there are studies that point to not only lung cancer from radon by childhood leukemia.  Here are a couple of links below that shed some light on that issue.

Environmental radon exposure and childhood leukemia – PubMed (nih.gov)

From the above link, “Among 12 ecological studies, 11 reported a positive association between radon levels and elevated frequency of childhood leukemia, with 8 being significant. In conjunction with ecological studies, several case-control studies on indoor radon exposure and childhood leukemia were examined, and most investigations indicated a weak association with only a few showing significance.”

Childhood leukaemia in areas with different radon levels: a spatial and temporal analysis using GIS | Journal of Epidemiology & Community Health (bmj.com)

For the health and safety of your family, what should you do?

  • Test for radon annually. Conducting short term tests are what’s used for real estate transactions. By radon testing protocols, a real estate, short term test is at a minimum of 48 hours long and up to 6 days. Even if you’ve been in your home for years, test annually.
  • Know your “Radon potential”. The NJ DEP classifies every Borough, Township and City in the state as either, “High Radon Potential”, “Moderate Radon Potential” or “Low Radon Potential”. The classification has to do with the percentage of homes tested vs the probability of having a radon test above 4.0pCI/L. 4.0 is the recognized, “Action Level”. In a real estate transaction, a radon level of 4.0 or higher requires mitigation. 3.9 or below and no further action is required for the sale of the home.

Anecdotally, I live in a NJ DEP classified, “High radon potential” area.  When we moved in radon tests were not common. When I became a home inspector and licensed for radon, I became aware and tested my home. I’ve conducted about 6 tests in my home over the past 9 years and they’ve always come back at around 2.5pCi/l in the basement. We don’t live in the basement but we do exercise there.  I recently purchased a radon detector from a company called Air Things – https://www.airthings.com/

After activating it this past summer, after a week or 10 days of calibration, it provided an reading of that same, 2.3 – 2.7pCI/L range.  About 6 weeks prior to writing this piece, the weather was cool enough to turn off the AC and open windows. After about 10 days of open windows on the floor above the basement, the radon levels in the basement exceeded 4.0pCi/L ! I was shocked but remembered from training over the years that opening windows on the floors above the basement can increase radon levels. Air passing through the house on the 1st level above the basement can cause negative pressure inside the basement. As the pressure inside the basement naturally wants to equalize, it has the potential to draw radon in from the soil and I believe that’s what happened in my home. In addition to not, “airing out” the house, I cracked a few basement windows open (Which I had not previously done).  Our basement is also a walk out so I leave the basement door to the outside open more now than I did before and the radon levels are in the 1.2 – 1.6pCi/L range pretty reliably.

Conclusions:

  • Take radon seriously. For all people, young and old. Help prevent lung cancer and potentially leukemia.
  • Either test for radon regularly or purchase an active radon monitor like the products sold by Air Things.

Final notes: The NJ DEP is implementing new radon measurement protocols effective December 3, 2022. Unfortunately, the new protocols will drive the price of radon testing up.  Currently, a 1200 square foot split level house would require 1 test device in the, “Lowest livable level” (aka basement). The new protocols will require at least four (4) tests in the same house.  If you’d like to have us conduct a radon test for you, prior to December 1, 2022, prices start at $100 (There are other factors that determine the number of tests now but 1 can is often allowable).  After December 1, the prices will definitely be increasing.

Frank J. Delle Donne is a NJ DEP Licensed Radon Measurement Technician. First licensed for radon testing in December 2013. He is co-owner of Regal Home Inspections, LLC along with his son, Brian.

Frank is licensed to do NJ home inspections, NJ DEP Core and 7B termite (Wood destroying insect) inspections and radon testing. Brian is licensed to do NJ home inspections, radon testing and lead paint testing.

 

radon inspector colts neck nj

Radon Testing Monmouth County NJ

Radon Testing: It’s Someone Else’s Problem, Not Mine. Right?

Originally published in 2014.

Updated March 16, 2023

My name is Frank J. Delle Donne, and I am a NJ Licensed Home Inspector.  I am the co-owner and Inspector at Regal Home Inspections, LLC. My son and co-owner, Brian, works with me and he’s also a licensed home inspector, radon measurement technician and he’s licensed to test for lead paint. I was a volunteer Emergency Medical Technician for over 26 years and was a member (Now retired) of the Colts Neck, NJ Board of Health and was Chairman of that Board for 2008 and 2009. During my studies to become a Home Inspector and earning my NJ Certification to be a Radon Measurement Technician I learned a great deal about Radon and felt compelled to share that information in a manner that is easy to understand and increases awareness.  Every home in New Jersey should be tested for Radon on a regular basis. The, “Action Level” where mitigation is required is 4.0pCi/L. That’s “Pico Curries per liter” of air which is the measurement of radioactivity. I’ve had many above 4.0. Some in the low double digits such as 10+, 20+, 30+ (None in the 40s) but 50+ and even a 317!

The federal Environmental Protection Agency (EPA) has been leading the effort to make citizens aware of radon and closer to home, the NJ Department of Environmental Protection (NJ-DEP) has been following suit.  Please read our earlier post for general information about radon.   This piece is intended to point out that a radon problem may be closer to home than you think.

Radon: The Basics

A few points that I’d like to repeat from the earlier article is that radon is everywhere and it is naturally occurring.  It is a radioactive gas which means that it transforms spontaneously and in that transformation it releases tiny bursts of energy.  When radon is inhaled in your home (living levels, bedrooms or basement) it is these tiny bursts of energy, occurring inside your lungs, that cause harm.

Radon is a colorless, odorless gas.  Radon IS NOT flammable, toxic or noxious.  It is, however, radioactive and it occurs naturally.  This article will look at the radon potential, as identified by the NJ-DEP, in various parts of the Garden State.   As you can see from the map, NJ is divided into 3 classifications of radon potential; Low (Blue), Moderate (Green) and High (Red).  Let’s look closer.certified home inspector monmouth county nj

What Areas of NJ are of Concern and What Types of structures?

New Jersey Administrative Code N.J.A.C. 5:23-10 (2013), among other things, specifies the construction codes, as they relate to radon mitigation in “E” and “R” Use Groups.  “E” stands for educational and “R” is for some Residential.  The International Building Code (New Jersey Edition) identifies educational as a building that houses 6 or more people for educational purposes through grade 12.  Section 305.1 identifies K-12 and Section 305.2 refers to younger facilities (Pre-K and day care) that may have five or more children 2&1/2 years of age or older.  The same source identifies five different residential types, R-1 through R-5.  These include basically any and all residence structures from single family homes to apartments, dormitories, convents and more. Frank and Brian are both certified to conduct radon measurements in Single Family Homes. Currently, Frank is also certified to conduct radon measurements in schools and large, non-residential homes such as commercial buildings of all sizes.

N.J.A.C. also identifies two other very important aspects (among many other good things).  First, Sub Section 5:23-10.4 states the specific construction techniques that must be followed for E and R construction in Tier 1 areas.  Tier 1 are the High Radon Potential areas shown in red in the previous map.  Before I go to that discussion, let’s finish the discussion on the construction.  Among other important elements, for example, the N.J.A.C. states that, “Basement slabs with interior foundation pipe drains installed shall have a solid, three-inch minimum diameter vent pipe installed in conjunction with this drainage system and be connected to an independent vent stack pipe terminating at an approved location on the exterior of the building.”

This accommodation is to allow for the future installation of a vent fan in order to actively draw air from below the basement slab and out of the house before the sub slab gasses have a chance to seep into the house. These are referred to sub-soil depressurization systems.

Therefore, new construction in these Tier 1 areas should have the basics for a radon mitigation system installed right from the start. So then, where are these Tier 1 areas?

NJ Counties and Towns that are Deemed to be Tier 1

As you can see from the map above the Tier 1 areas are nearly in every part of the state. From northern Sussex County to southern Cumberland County, high radon readings are possible in many areas. One thing you might notice is the sandy soils of the areas along the shore and the Pine Barrens are the lowest areas. As written about in other articles, these sandy soil areas don’t have a lot of the bedrock with uranium as some of the other areas. Northern Jersey has granite and shale that are ripe for the presence of Uranium 238 which is at the beginning of the radioactive decay process that results in Radon-222. The N.J.A.C. specifically mentions counties and towns that are Tier 1 areas so if you can’t quite figure out if you live in a red area or a green one, this list should help.

If you live in one of these areas, you live in an area of High Radon Potential. You should get your home checked regularly. Even if you have a radon mitigation system it wouldn’t hurt to check annually. If you do not have a radon mitigation system, you should check quarterly for a period of time. Radon levels can change season to season and month to month. It would be a good idea to have a baseline of seasonal levels. If you have young children and you haven’t checked your home for radon it is something that you should do immediately. When you are dealing with the health of you and your family, the cost to install a mitigation system is reasonable. It’s a lot less costly compared to dealing with the illnesses that can occur from extended and continued exposure to radon.

Testing is easy and relatively inexpensive considering the health hazard that radon is.  

Conclusion | Radon Inspector Colts Neck NJ

Radon is a serious health issue, but it can be minimized. You need to test now and then every 6 months.  Likely, it cannot be 100% eliminated but mitigation can usually get the radon levels very low.  It’s naturally occurring and exists in nature. It’s not man-made nor can we stop it from existing.  We can, however, minimize its pathways into our homes and help ensure a healthy and safe environment.  It is better to know than to hope.

Please call today to schedule your radon test for your family.  Regal Home Inspections, LLC does not mitigate so we are not motivated to find elevated readings so we can clean them up.  We inspect homes and we are both, Frank & Brian, licensed as a Radon Measurement Technicians – MET13186 & MET14070 respectively.

Other Monmouth County NJ Certified Home Inspector Services

Regal Home Inspections, LLC offers Monmouth County NJ certified home inspections, condo inspections, estate inspections, and townhouse inspections.

It’s likely your mortgage company will require a wood-destroying insect inspection. Regal Home Inspections has the NJ DEP Core & 7B Pesticide Applicator license, so we can offer professional termite and wood-destroying insect inspections as well!

Call Frank @ 908-902-2590 or Brian @ 732-740-8365 for your free quote or if you have any questions!