Canadian Association of Radon Scientists and Technologists

Helping Canadians Reduce Radon Risk

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  • 07 Dec 2016 4:20 PM | Pam Warkentin (Administrator)

    The Canadian Association of Radon Scientists and Technologists (CARST) is making efforts to encourage all citizens to join in the effort to advocate for changes to the building code.  Acceptance of proposed changes to Ontario Building Code (OBC) are governed by consensus.  Residents of Ontario need your help to protect their lives and health by ensuring radon testing is conducted in all new construction.  Every comment is an important vote!

    The Ontario Building Code is currently open for review on proposed changes and are accepting comments until December 20.  Please take time to add your comment now!

    If you would like to further educate yourself about the proposed changes to the OBC, we have provided links to the relevant sections:    Radon    Resistance to Air Leakage    Good Engineering Practice    Radon   Soil Gas Control   Required Soil Gas Control   Required Barrier to Air Leakage

    According to Public Health Ontario, almost 850 lung cancer deaths that occur each year in Ontario are attributable to radon (2)(Ontario Public Health, 2016), yet mandatory radon testing for all newly constructed buildings with residential occupancy is not in the current OBC.  

    Eleven (11) people, on average, in Ontario die annually from carbon monoxide poisoning (1)(Ontario Association of Fire Chiefs 2016).  Radon kills 77 times more people in Ontario every year than carbon monoxide.  Both inhalable gases (i.e. carbon monoxide, radon) are colourless and odourless and both gases pose a risk to almost all Canadians. Precedence has dictated that building code requirements are in place to protect 11 Ontario residents annually from death due to toxic carbon monoxide, so surely such protection is prudent to protect 850 Ontario residents annually, and future occupants, from death due to radon induced lung cancer.

    We would like to see that the changes to the OBC include mandatory radon testing and that the testing be completed by certified C-NRPP Measurement Professionals.

    To add your comments click here: 

    The specific code change reference # is B-09-13-05.

    We are recommending that people add comments to state their support for mandatory radon testing after construction an occupancy with a certified C-NRPP  Measurement Professional.

    Works Cited in above:

    (1)Ontario Association of Fire Chiefs. (2016). Ontario Association of Fire Chiefs. Retrieved 11 27, 2016, from Ontario Association of Fire Chiefs:

    (2)Ontario Public Health. (2016). Ontario Public Health. Retrieved 11 27, 2016, from Ontario Public Health:

  • 14 Nov 2016 11:38 AM | Pam Warkentin (Administrator)

    CARST’s focus for this year’s Radon Action Month is to help our members increase radon awareness in their communities.  To do this, we have developed a range of ideas and supporting materials and are providing them to you here.  We hope these ideas will inspire you to choose one or more interest groups in your community, and reach out and connect!

    You are welcome to download and print any of the following items yourself; if you’d like us to print the material and ship it to you please allow 2 weeks before the items will be delivered. 

    Check out information on the Take Action on Radon November 2, launch at the Ontario Science Centre, here.

    Municipal Outreach:

    Child Care Centers:

    As part of Radon Outreach we anticipate the release of a report on daycares by CAREX (CARcinogen EXposure Canada) and CPCHE (Canadian Partnership for Children’s Health & Environment); we will post the release to our Facebook and twitter account, you can also find the twitter feed on the front page of our website, so watch for it; this may be a good time to contact your local child care facility and encourage them to test for radon.

    Here are some tools to help you, including:
    • Easy to understand Pamphlet on Testing Child Care Centers
    • Postcards for parents
    • Posters to put up around the center
    • Sample letter for child care centers to send
    • Sample radon test record for keeping track of test data

    Workplace Information:

    As part of radon outreach, Pollution Probe is putting out a Radon Challenge encouraging workplaces to test for radon and to have their employees test for radon.
    • Click here for more information
    • Consider approaching local workplaces to do a “Lunch and Learn” or “Breakfast Break” session on radon for their employees

    Doctor’s Offices

    • Perhaps you can reach out to your own doctor or the doctors in your neighbourhood.  Take in with copies of “Radon is it in your Home” pamphlets; so they can make these available in their offices, and you can provide the staff with information on the MacHealth course that Health Canada has developed by giving them a - Radon Education Program card.
    • You can order these from  or (for a package of it all)

    CARST is also collaborating with other groups on the following areas to make changes happen:


    • We anticipate CAREX will soon be releasing a report on school testing.  CARST is working with various groups to make recommendations to provincial health officials on making a policy to test all the schools in the province.

    New Home Warranty Programs

    • CARST is working to protect new homeowners from high radon levels; we are preparing a letter to write to all the home warranty programs to ask if they would consider including radon as part of their coverage.

    Public Forums (check out our event page)

    • We work with various groups to get information sessions for public awareness; CARST has been working in Manitoba, Alberta and BC this fall, we will post dates on our website.  Let us know if you want support to have this happen in your area.

    That’s it for this month.  With so many ideas available, let’s all take our message to heart and make November the month we take action on radon!

  • 14 Nov 2016 11:31 AM | Pam Warkentin (Administrator)

    Cette année, pour le mois de Occupe Toi du Radon, l’ACSTR vise à aider ses membres à augmenter la sensibilisation au radon dans leurs communautés.  Pour ce faire, l’ACSTR vous présente ici plusieurs suggestions et des documents d’accompagnement qu’elle a élaborés.  Nous espérons qu’ils vous inciteront à identifier un ou plusieurs groupes d’intérêt dans votre communauté, à communiquer avec eux et à établir des contacts!

    Vous êtes invités à télécharger et à imprimer vous-mêmes les documents suivants; si vous voulez que nous les imprimions et que nous vous les envoyions, veuillez accorder 2 semaines pour le délai de livraison.  

    Activités municipales:

    • Contactez le maire et le conseil de votre municipalité et encouragez-les à participer au mois de la sensibilisation au radon en vérifiant leur propre domicile et en parlant du radon lors d’une de leurs réunions du conseil


    Dans le cadre de la sensibilisation au radon, nous espérons publier le rapport de CAREX (Exposition aux agents cancérigènes au Canada) et PCSEE (le Partenariat canadien pour le santé des enfants et l’environnement) concernant les garderies; nous afficherons la publication dans nos comptes Facebook et Twitter.  Vous pouvez aussi accéder au fil Twitter sur la page d’accueil de notre site Web, alors surveillez-le; c’est peut-être aussi l’occasion de contacter votre garderie locale et de l’inciter à vérifier le niveau de radon dans son milieu.

    Voici quelques outils pour vous aider:

    • Document facile à comprendre concernant la vérification du radon dans les garderies
    • Cartes postales pour les parents
    • Affiches à disposer dans l’établissement
    • Un exemple d’une lettre que les garderies peuvent distribuer
    • Un exemple de rapport de vérification du radon pour faire le suivi des résultats des tests

    Information en milieu de travail:

    Dans le cadre de la sensibilisation au radon, l’organisation canadienne  <<Pollution Probe>> a interpellé les milieux de travail et leurs employés à vérifier les niveaux de radon.
    • Cliquez ici pour plus d’information
    • Songez à communiquer avec les milieux de travail locaux pour proposer un “Lunch & Learn” ou une séance “Pause déjeuner” pour sensibiliser les employés au radon

    Bureaux des médecins

    • Vous pourriez aussi sensibiliser votre propre médecin ou les médecins de votre communauté.  Apportez-lui des exemplaires de la brochure  “Du radon dans votre maison?” qu’il peut rendre disponible dans son bureau. Vous pouvez aussi informer le personnel du programme d’apprentissage sur le radon de MacHealth développé par Santé Canada en laissant la carte du programme d’apprentissage sur le radon de
    • Vous pouvez commander ces cartes à

    L'ACSTR travaille aussi dans les domaines suivants pour inciter aux changements:


    • Nous espérons que CAREX publiera bientôt son rapport sur la vérification des écoles.  L'ACSTR travaille avec divers groupes pour faire des recommandations  aux responsables provinciaux du domaine de la santé pour établir une politique de vérification dans toutes les écoles de la province.

    Programmes de garantie pour les nouvelles maisons

    • L'ACSTR travaille à protéger les nouveaux propriétaires contre des niveaux élevés de radon; nous nous préparons à écrire une lettre à tous les programmes de garantie pour les nouvelles maisons leur demandant s’ils envisageraient d’inclure le radon dans leur couverture.

    Forums publics

    • Nous collaborons avec divers groupes pour organiser des séances d’information afin de sensibiliser le public; l'ACSTR travaillera avec le Manitoba, l’Alberta et la Colombie-Britannique cet automne, nous afficherons les dates dans notre site Web.  Dites-le nous si vous voulez qu’on vous aide à organiser des évènements dans votre région.


    Voilà pour ce mois-ci.  Avec autant d’idées, prenons tous ce message à cœur et profitons de ce mois de novembre pour prendre des mesures concrètes contre le radon!



  • 15 Sep 2016 10:33 AM | Pam Warkentin (Administrator)

    With great sadness, we want to share news with our CARST family on the passing of Arthur Scott.  We are saddened to learn that he passed away on Sunday, September 11, 2016 from a short, quick illness.  There will be a quiet family memorial service for him.

    In honour of the passing of Arthur Scott, CARST would like to recognize his contributions to the radon industry.  Arthur made significant contributions through his early design of the radon mitigation – active soil depressurization concept and continued through his life to share his expertise in radon mitigation and measurement.  We will miss your contributions and your wit, Arthur.

    We encourage you to post your thoughts, memories and best wishes here and we will share these with Arthur's family.  If you have more personal wishes you would like to pass on to the family, you can email and we will compile these and pass them on as well.

  • 14 Sep 2016 3:35 PM | Pam Warkentin (Administrator)

    Municipalities have a great opportunity to help in the campaign to raise awareness on radon risk in Canada.  We have some great examples of municipalities who are taking this seriously.  CARST has realized this optimal opportunity and are working to provide information to municipalities across the country in an effort to encourage more of them to join in the efforts of radon awareness.  We are encouraging others to join us in this effort.

    Chelsea, Quebec has used their resources to provide residents with information.  They have made information pamphlets available in their public library; town office and made test kits for radon in air and radon in water readily available to their residents through their town office.  They have also decided to undergo research on radon levels in their community.

    Guelph, Thunder Bay and Central Elgin in Ontario are three other municipalities who have taken initiative to take action to protect their residents from radon.  Each of these communities have developed construction standards for new buildings to include radon control measures.  

    CARST and other Non-Governmental Organizations (NGOs) have been very active in connecting with municipalities to take action on the campaign to reduce Canadians radon exposure.  In response to members, CARST has looked at the Ontario building code and has sent to all the municipalities in Ontario, an opinion letter from a lawyer on their responsibility to protect their constituents with respect to section SB9 of the building code and radon.  We have encouraged municipalities to seek their own legal counsel on this and offered them some information on radon and assistance as required. You can email CARST for a copy of this letter -

    If you are familiar with the mayor or a councilor in your municipality, we encouraged you to talk with them and discuss some suggestions as to how they can become more active in promoting radon awareness.  Here is a copy of a sample presentation that you can use if you are able to provide a presentation and a document with some suggestions and a CARST Pamphlet encouraging them to get involved.

    We are looking forward to seeing how the increase of awareness and prevention of lung cancer will grow at an exponential rate, once municipalities join the efforts.

  • 29 Jan 2014 2:15 PM | Pam Warkentin (Administrator)


    It's here.  We are officially launching our new website.  One of the exciting parts of this website is a list of almost 90 professionals who are all committed to help us reduce radon levels for Canadians and the second best is the Radon News Online which lists articles that are online in regards to radon.  I remember when 4 a year was a success, so far we have had a list of five in January alone - pass on more when you see them so we can watch the list grow. 

    When I first started went to the US for training in Radon Measurement, no one in Canada seemed to know what I was talking about.  I remember my first trade show in Winnipeg, I had to stop people to tell them about radon and how they needed to protect themselves, but they seemed to think I was trying to sell them 'snake oil'.  Now, seven years later people are emailing and calling me to ask what to do about it, and the last trade show I was at, they were so glad to have finally found someone to give them answers.  WOW.  What a long way we have come. 

    I remember one of the first pre-CARST meetings when we were talking about vision and dreams for 'someday' Bob Wood mentioned wanting bill boards advertising radon across the country.  It seemed like a grand vision then, but now it seems like a possibility.

    I realize there are still some radon professionals who are struggling to make ends meet with their radon business and many other professionals that are wondering if radon is worth the cost and time to invest in.  Canadian homeowner's need you.  We have come this far as pioneers.  It has taken dedication and hard work, help us by continuing to share the news with homeowner's to protect them.  We need to continue to get information to homeowner's so they can make an informed decision about their health.  Help us get the word out.

    Help us help Canadians reduce their radon risk!!

    Voilà! Nous lançons officiellement notre nouveau site web. La partie la plus intéressante de ce site est une liste de près de 90 professionnels qui sont tous engagés à nous aider à réduire les niveaux de radon pour les Canadiens, et en second lieu les Nouvelles en ligne sur le radon. Cette section répertorie les articles en ligne qui concernent le radon. Je me souviens que 4 articles en ligne par année était un succès, jusqu’à maintenant nous avons 5 articles en janvier seulement. Si vous nous transmettez des articles dès que vous les voyez, nous verrons tous grossir cette liste.

    Quand je suis allé aux USA pour le cours en mesure du radon, personne au Canada ne semblait savoir ce dont je parlais. Je me souviens de mon premier salon commercial à Winnipeg, je devais arrêter les gens pour leur parler au sujet du radon et de la nécessité de se protéger mais ils  semblaient penser que je voulais leur vendre de la « poudre de perlimpinpin ». Aujourd’hui, sept ans plus tard, les gens m’envoient des emails et me téléphonent pour me demander ce qu’il faut faire et lors de mon dernier salon commercial les gens étaient contents d’avoir enfin trouvé quelqu’un pouvant répondre à leurs questions. WOW ! Que de chemin parcouru.

    Je me souviens d’une des premières réunions précédent CARST/ACSTR quand nous parlions de vision et de rêves pour le futur, Bob Wood a dit qu’il voulait des panneaux d’affichage publicitaires sur le radon à travers le pays. Ça semblait alors un grand rêve mais maintenant ça semble possible.

    Je sais qu’il y a encore des professionnels du radon qui peinent à joindre les deux bouts avec leur entreprise de radon et que de nombreux autres se demandent si l’investissement pour le radon en temps et argent en valent la peine. Les propriétaires canadiens ont besoin de vous. Nous avons fait tout ce chemin de pionniers, il a fallu du dévouement et du travail acharné, aidez-nous en continuant à partager l’information aux propriétaires en vue de leur protection. Nous devons continuer à transmettre l’information aux propriétaires afin qu’ils puissent prendre une décision éclairée au sujet de leur santé. Aidez-nous à passer le message.

    Aidez-nous à aider les Canadiens à réduire leur risque au radon!

  • 12 Nov 2013 3:17 PM | Pam Warkentin (Administrator)

    November has been declared Radon Action Month.  As part of this effort, Health Canada has enlisted the help of a prominent, well-respected Canadian scientist to get the word out with an informative public service announcement. This PSA will be launched across the country on November 18 as part of Radon Action Month. 

    What activities are you doing for radon action month.  Share your ideas.

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