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Ohio Radon Mitigation Data

Summarized by Margaret Henderson

Radon mitigation data for Ohio are presented in a presentation
created by Ashok Kumar, Charanya Varadarajan, and Suman Maroju from the Department of Civil Engineering , University of Toledo. The project was funded through the Ohio Department of Health.

Records on 17,089 mitigations were examined, which reported 15 different types of systems contractors reported using. Information is available by city/county and year in the mitigation database. (Records with complete information totaled 11,565.)

An on-line presentation about radon, created through funding by the Ohio Department of Health, discusses “Management of Indoor Radon in the State of Ohio.”

The presentation discusses the information from the website which contains information on the home, school, and water radon tests done in Ohio. Analysis of the radon data is given.

Radon concentration statistics give the results of 139,152 test records, with a maximum of 927.6 pCi/L and an arithmetic mean of 7.64 pCi/L. The unified database includes 1500 zip code areas in Ohio. Of those, 442 had a geometric mean indoor radon concentration more than 4.0 pCi/L.

Statistical computations of the data give breakout of the findings. Of the 88 counties in Ohio, 23 counties have indoor radon concentrations with concentrations of more than 4.0 pCi/L. One county, Licking, reported radon concentrations greater than 8 pCi/L. Additionally, an aerial radiometric map of Ohio shows the concentrations of uranium in superficial sediments and soils.

Radon concentrations in schools are given for schools in each county. Testing has covered 865 schools in 41 counties, with 259 schools having findings exceeding 4pCi/L. There were 1694 rooms having radon concentrations greater than or equal to 4 pCi/L of the total tested 28,649. Approximately 30.5% of schools in Ohio have a potential for at least one room in excess of 4 pCi/L.

Radon concentration in water in public and private water systems in counties are given for those in which testing has been done.

To view the presentation, see http://www.eng.utoledo.edu/aprg/radon/concentrations/main.html

The presentation was created by:
Ashok Kumar
Charanya Varadarajan
Suman Maroju
Department of Civil Engineering
University of Toledo

For more information, contact:
Ohio Department of Health
Radon Hotline