Radon and Chemical Soil-Gas/Vapor Intrusion – Update on Testing Associations by Henry Schuver

While radon typically presents numerically higher risks in indoor air than chemical vapor intrusion (CVI), the risk of CVI typically raises more concerns for the public and is much more expensive and disruptive to assess. However, the similarities between the intrusion of these two components of soil gas could be used to increase the protection of public health from both risks.

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Compartmentalized Radon Mitigation And IAQ Enhancement Fresh Air Retrofit In High And Low Rise Multihousing By Wayne Dean, JD

A retrofit fresh air delivery alternative consists of a port ored from indoors through an exterior wall using a special boring rig, an easily removable ventilation/filtration module, and a controller sensing indoor temperature and relative humidity to control operation or speed control of the ventilation/filtration module, to maintain temperature and humidity comfort regardless of outdoor conditions.

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CORRELATING RADON ACTIVITY WITH CARBON DIOXIDE CONCENTRATION IN AN IOWA CAVE By Lawrence Welch

Lawrence E. Welch*, Yu-An I. Chen, Mark D. Jones, Christopher L. BeckKnox CollegeGalesburg, Illinois, USAlwelch@knox.edu Abstract Reports of encountering “bad air” have occasionally resulted from humans entering cave passages with high levels of carbon dioxide.  Humans breathing high concentrations of carbon dioxide will note obvious physiological impacts, ranging from breathlessness up to death at extreme […]

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Targeted Community Radon Testing: Results And Impact On Mitigations Performed by Kevin Stewart

This report describes that program, its scale and scope, findings of high results, sample means, distribution by level classes, and comparison by residence floor. Comparison of rates at which mitigations were carried out in test-program communities and in non-targeted neighboring control communities found that mitigation rates increased

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