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U.S. Department of Energy
Office of Scientific and Technical Information

Radon mitigation of groundwater at a commercial fish hatchery

Conference ·
OSTI ID:269814
; ; ;  [1]
  1. New York State Department of Health, Albany, NY (United States); and others
Groundwater radon levels of 83 Bq/L (2240 pCi/L) generated indoor radon levels >3300 Bq/m{sup 3} (89 pCi/L) at a commercial fish hatchery. Passive and active mitigation strategies to reduce the waterborne radon levels included a packed column, a waterfall through perforated grates, surface aeration, and bottom bubblers. Though waterborne concentrations were reduced up to 83% using a combination of mitigation procedures, a comparable reduction in indoor radon concentrations was not observed. Measurements by two continuous radon detectors agreed with those from grab flasks. A diurnal cycle showed that indoor radon levels peaked in early afternoon, probably as a result of warmer air being dissolved in the water during mitigation. Reduction of indoor radon levels below 148 Bq/m{sup 3} (4 Ci/L) was achieved by direct air ventilation at high flow rates.
OSTI ID:
269814
Report Number(s):
CONF-950999--
Country of Publication:
United States
Language:
English