Radon in Saguenay–Lac-Saint-Jean the 2012 survey
Saguenay–Lac-Saint-Jean sits on the Canadian Shield, old rock that can contain uranium depending on the spot. Winters there are long. A house that is heated and little aired for months is exactly the condition in which radon has time to build up.
91 days rather than a snapshot
A short test says whether a quick screen is reassuring or not. To decide on work, Health Canada uses a measurement of at least three months. In this region, starting it in November lands it in the middle of the heating season. See the 91-day test.
Lived-in basements
A bedroom, apartment or office in the basement: the detector goes there, between 0.8 m and 2 m from the floor, away from supply vents. Why the basement concentrates the gas.
The 4-day test gives a first reading. The 91-day test covers the three-month minimum Health Canada asks for. Both are $59 before tax: shipping, return and the laboratory are included, taxes extra. The PDF report is sent within 2 business days after the laboratory receives the detector.
Above 200 Bq/m³, mitigation is confirmed with a quote. Gaz Radon is C-NRPP certified for measurement and mitigation.
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