clothes dryers, and room exhaust fans

can result from using outdoor air for combustion sources.

Sealing major radon sources

Extremely case-specific

Sealing major radon sources

Uses gas-proof barriers to close off and exhaust or ventilate sources of soil-gas-borne radon

Local exhaust of the source can produce significant house-wide reductions.

Extremely case-specific

Sealing areas of major soil-gas entry such as cold rooms, exposed earth, sumps, or basement drains and ventilating by exhausting collected air to the outside

Most jobs are accomplished for less than $100.

Operating costs for a small fan are minimal.

Continued on next page

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