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SOME RESULTS FROM THE DEMONSTRATION OF INDOOR RADON REDUCTION MEASURES IN BLOCK BASEMENT HOUSES
Citation:
Henschel, D. AND A. Scott. SOME RESULTS FROM THE DEMONSTRATION OF INDOOR RADON REDUCTION MEASURES IN BLOCK BASEMENT HOUSES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/D-87/089 (NTIS PB87176426), 1987.
Description:
The paper gives results of tests of active soil ventilation techniques in 24 block-wall basement houses in eastern Pennsylvania having significantly elevated indoor radon concentrations, generally above 740 Bq/cu m. The results indicate that radon levels can be reduced substantially (often below the U.S. EPA guideline of 148 Bq/cu m) if effective suction can be drawn on the soil underneath the concrete slabs of these houses. Such effective suction appears achievable when either: (a) the house has a complete loop of drain tile around its footings for water drainage purposes, and suction is drawn on that loop; or (b) a sufficient number of suction pipes can be inserted at the proper locations into the crushed rock or soil underneath the slab.