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Dr. John Einarson, director of the Rappahannoek-Rapidan Health District, recommends that all homeowners do a preliminary screening test of their home for the presence of radon gas.
That screening can be done with an activated charcoal detector, available at many hardware stores and other retail outlets. The cost is $5-$15. The test takes three to seven days, after which the canister is mailed to a laboratory for analysis. The results are returned to the homeowner.
If the screening test reveals concentrations above the recommended maximum level (four picocuries per liter of air), a second test using an alpha track indicator is recommended. Those kits are available from the American Lung Association of Northern Virginia and several other distributors. The price is about $25 per kit. The alpha track tests take a period of months, but are closer to the average exposure in the home than the charcoal tests.
The health department’s Bureau of Radiological Health and the Rappahannock County Health Department have a listing of companies and products which meet EPA radon testing standards. Any radon testing service or product sold in Virginia must be on that list. Con-' sumers may request that list by
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