Radon transport into dwellings: Considering groundwater as a source

Oostrom, Mart; Lenhard, R. J.

doi:10.1029/96gl01433

Cited by 5 publications

(2 citation statements)

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“…Based on this MCL, the water supply of Dehradun is radon contaminated, as all observed values of radon in drinking water were greater than the proposed MCL. However, the risk factor depends on the total mass of radon partitioning from groundwater to the soil gas [17]. If the transport time of radon from groundwater-soil gas interface to dwellings is long compared to the half-life of radon, then it may not pose a risk to the inhabitants.…”

Section: Discussionmentioning

confidence: 99%

Occurrence of Radon in the Drinking Water of Dehradun City, India

Ramola¹,

Choubey²,

Saini³

et al. 1999

Indoor Built Environ

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In this paper, the results of measurements of radon (²²²Rn) in the drinking water of Dehradun City are presented. The radon was measured in water samples taken from the tube wells and hand pumps which are the usual sources of water supply in the city. The recorded radon concentrations in 19 water samples from different hand pumps were found to vary from 27 to 154 Bq·l^–1 with an average of 67 Bq·l^–1, while radon concentrations in 49 water samples from different tube wells were found to vary from 26 to 129 Bq·l^–1 with an average of 59 Bq·l^–1. The results are compared with international recommendations for human exposure. These recorded values were found to be above the average of the recommendations but well below the highest recommended value of 400 Bq·l^–1. In general, the drinking water of Dehradun city is contaminated by radon at a concentration which is reasonably uniform over the study area.

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Section: Discussionmentioning

confidence: 99%

Occurrence of Radon in the Drinking Water of Dehradun City, India

Ramola¹,

Choubey²,

Saini³

et al. 1999

Indoor Built Environ

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“…A simple radon generation problem was examined in this guide in Section 5.4 (Radon Vapor Transport into Dwellings) of this report. A more detailed look at the issue of radon generation in groundwater can be found in Oostrom and Lenhard (1996) and Oostrom et al (1996b).…”

Section: Additional Stomp Applicationsmentioning

confidence: 99%

STOMP Subsurface Transport Over Multiple Phases: Application guide

Nichols¹,

Aimo²,

Oostrom³

et al. 1997

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This Application Guide is a software document written to provide a suite of example applications of the STOMP (Subsurface Transport Over Multiple Phases) simulator, a scientific tool for analyzing multiple phase subsurface flow and transport. A description of STOMP'S governing equations and constitutive functions and numerical solution algorithms are provided in a companion document, the STOMP Theory Guide. The use, compilation, and execution of the STOMP simulator are described in a second companion document, the STOMP User's Guide. Creation of input files for the STOMP simulator with the sTeP utility is described in a third companion document, the sTeP User's Guide. In writing these guides to the STOMP simulator, the authors have assumed that the reader or code user has received training or is knowledgeable on the topics of multiple phase hydrology, thermodynamics, radioactive chain decay, and nonhysteretic relative permeability-saturation-capillary pressure (k-S-P) functions. The authors further assume that the reader is familiar with the computing environment on which they plan to compile and execute the STOMP simulator. Computer requirements for the STOMP simulator are strongly dependent on the complexity of the simulated system and the translation of the physical domain into a computational domain. The simulator requires an ANSI FORTRAN 77 compiler to generate an executable code. The speed at which the STOMP simulator solves subsurface flow and transport problems depends on the computing platform, problem complexity, and computational domain size and dimensionality. One-dimensional problems of moderate complexity can be solved on conventional desktop computers, but multidimensional problems involving complex flow and transport phenomena typically require the power and memory capabilities of workstation or mainframe computer systems. Pacific Northwest National Laboratory is operated for the U.S. Department of Energy by Battelle Memorial 1 Institute. under Contract DE-AC(M76RL01830. V Acknowledgments This work was funded by the Office of Science and Technology, within the Department of Energy's Office of Environmental Management, under the Plumes Focus Area, with the support of

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