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SOIL AND FILL LABORATORY SUPPORT - 1991, FLORIDA RADON RESEARCH PROGRAM
Citation:
Roessler, C., R. Richards, H. Nguyen, D. Smith, AND C. Vonada. SOIL AND FILL LABORATORY SUPPORT - 1991, FLORIDA RADON RESEARCH PROGRAM. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/R-94/064.
Description:
The report gives results of soil analysis laboratory work by the University of Florida in support of the Florida Radon Research Program (FRRP). nalyses were performed on soil and fill samples collected during 1991 by the FRRP Research House program and the New House Evaluation program (NHEP). ork included textural classification, and particle size, moisture, Radium-226, and emanation coefficient determinations. uring the period, 124 samples representing 45 sites were submitted. or North Florida sites (Gainesville vicinity), Radium-226 concentrations in all but two sites were < 1 pCi/g. t one site, moderately elevated radioactivity fill (3 pci/g) was found over low activity (<1 pCi/g) surficial substrate. t another site, the near-surface substrate was moderately elevated in radioactivity (5 pCi/g), but the associated fill sample was of low reactivity. entral Florida sites (Polk County) were characterized by predominantly moderately elevated (1-10 pCi/g) or elevated (> 10 pCi/g) fill over either low activity or moderately elevated substrate. onclusions from this work include: North Florida observations support earlier conclusions that a large proportion of the fill actually used in Florida construction is of a low radium content, and elevated radium concentrations do occur in some soil and fill samples in actual house construction.