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Putnam County
Indoor Radon Estimates
Percent Homes Above 4 pCi/L
June 1999

Town or City
homes
measured
living area*
basement**
best
estimate
(%)
range #
(%)
best
estimate
(%)
range #
(%)
Carmel town 279 5 (4 - 6) 26 (24 - 29)
Kent town 87 11 (9 - 14) 42 (39 - 47)
Patterson town 65 5 (4 - 7) 25 (21 - 30)
Philipstown town 103 16 (14 - 19) 48 (45 - 52)
Putnam Valley town 125 11 (10 - 13) 42 (39 - 46)
Southeast town 111 6 (4 - 8) 23 (20 - 26)
           
Putnam county 770 8   33  

* Long-term measurement, 90 days to one year.

**Short-term measurement, typically 2 to 7 days.

# Uncertainty range of one sigma corresponds to a 68% confidence interval.


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New York State Department of Health - Wadsworth Center

Revised: June 2001