http://www.twincitiesusa.com/video/Brad-Nyberg-from-Quality-Radon-answers-your-radon-questions
STEVE: Hi, this is Steve Westmark, Counselor Realty. Thanks for watching my video blog this week. This week, I’m bringing in Brad Nyberg with Quality Radon to talk about radon and how to deal with it. Welcome, Brad.
BRAD: Thank you.
STEVE: Many times, I have buyers who want to have a radon test done with their inspection, and what is that inspector looking for and what does it mean once they’ve done a radon test and it comes back with whatever readings it has?
BRAD: Well, initially, the inspector is going to place a radon test device most often electronic in nature and so it’s a data-gathering machine. It gathers radon data hour by hour and minute by minute and will present the inspector with a graph, a table and an average of radon levels throughout the test. What the inspector is trying to ascertain is what are the levels of radon gas on the property; are they excessive; are they moderate; are they low; and should action be taken.
STEVE: Well, I know there’s measurements that come out. There’s something like a 4.0 whatever. Why don’t you explain a little bit about what these measurements mean and what changes are going on in the marketplace with that.
BRAD: Certainly. Currently, the EPA’s action level is 4.0. What that really means is an amount of radiation per liter or volume of air. And at 4.0, the EPA has said that that is a level that’s not acceptable and 3.9 is really a passing grade. Well, what it really comes down to is how much radiation to you want to be exposed to. Now that standard has been in place for over 20 years, and it’ll be changed in the next couple years to be 2.7 or less.
And so ideally, you want your home to be as low as reasonable, as low as possible. And so the 4.0 level came out to be what is achievable for a radon mitigation system. And the World Health Organization has come out two years ago this month with a recommendation that all countries reduce their acceptable levels to 2.7 or less. Now to give you an idea of what that really means to a person, what is the risk of cancer for example due to radon exposure?
Well, if you lived in a basement environment. Minnesota. Basement bedrooms are quite common. Maybe you have a basement bedroom and you were downstairs let’s say for the sake of discussion purposes 24 hours a day at a reading of 3.9, that’s the relative equivalent of smoking 7.8 cigarettes per day, so darn near half-a-pack-a-day smoker. Now Minnesota’s a high state. They’re the fourth highest in the nation. So the average home here has a reading of 5.4.
Well, at 24-hour exposure, that’s 10.8 cigarettes. You really double the number to find out what your exposure equivalent risk of smoking would be to your lungs. We find homes in Minnesota that are as high as 120 and average 5.4. Some as low as 0.3, 0.4 without a radon system. The good news is they all can be corrected. So the highest reading we found recently is 120 in Stillwater, Minnesota, and that was a couple of months ago back in August.
And we brought that down to 0.5. So what it really means is that a radon system is very successful at reducing radon gas in a home. We talk to many buyers and consult the buyers and tell them if you like the house, that’s a house you want to buy, not to worry. It can be fixed.
STEVE: So generally, what happens is when I have an inspection the radon thing comes back at a higher than good level, I give Brad a call and I have Brad go out and do radon mitigation. So Brad, when you do radon mitigation, what are you doing?
BRAD: Well, Steve, what we’re doing is installing what’s referred to as a sub-slab depressurization system. Quite literally, it is a vacuum system from the ground into the house. So the inspector measures the issue. The issue is radon gas in the air. The real problem is there’s radon gas building up under the house, seeping into the house, and thereby exposing the owner, the occupants to radiation. So what a radon system really is is quite literally a customized vacuum system for the ground under the house.
What happens is in most cases is we come in, we cut really a 5-inch hole through the concrete slab in the basement, normally in an unfinished area—utility room, laundry room, storage room—and ideally next to the attached garage. So we cut this 5-inch hole through the slab, removing about a 5-gallon bucket or so of material. So now we have a little pit we created under the slab.
We’ll insert a 3-inch PVC pipe into the opening, reseal the concrete so that it’s airtight around the pipe, then route that pipe up along the foundation wall, run through into the attached garage, run that pipe up along the garage wall to the attic of the garage, mount a very high-quality radon blower upon that pipe, then have that pipe exit out to the roof. You’ll apply flashing and insulation materials and caulking and sealants. And we also do a nice job of sealing cracks and openings in the slab of the basement floor and seal the sump cover.
So we power that system up. The fan’s going to spin. It creates a vacuum in the pit we created, and that vacuum causes the majority of ground gases—be it methane, moisture, radon, what have you—to that point of collection and it’s discharged outside where it quickly dissipates.
STEVE: As you can tell, Brad is really knowledgeable on radon and helping people deal with this circumstance. So what’s the best way for people to get a hold of you, Brad, to have radon mitigated on their home?
BRAD: Well, the best way to call me is by phone, 612-521-3580 or actually, I love e-mail because then I have the information in front of me; I can respond quickly. And so my e-mail address is Bradradonman@gmail.com.
STEVE: Thanks.