ATSDR Draft Toxicological Profile for Radon_September 2008.pdf

RADONxvii5. PRODUCTION, IMPORT/EXPORT, USE, AND DISPOSAL .......................................................... 1015.1 PRODUCTION ............................................................................................................................ 1015.2 IMPORT/EXPORT ...................................................................................................................... 1025.3 USE .............................................................................................................................................. 1025.4 DISPOSAL .................................................................................................................................. 1046. POTENTIAL FOR HUMAN EXPOSURE ......................................................................................... 1056.1 OVERVIEW ................................................................................................................................ 1056.2 RELEASES TO THE ENVIRONMENT .................................................................................... 1096.2.1 Air ....................................................................................................................................... 1106.2.2 Water ................................................................................................................................... 1116.2.3 Soil ...................................................................................................................................... 1126.3 ENVIRONMENTAL FATE ........................................................................................................ 1126.3.1 Transport and Partitioning ................................................................................................... 1126.3.2 Transformation and Degradation ........................................................................................ 1156.3.2.1 Air ................................................................................................................................ 1156.3.2.2 Water ............................................................................................................................ 1166.3.2.3 Sediment and Soil ........................................................................................................ 1166.3.2.4 Other Media ................................................................................................................. 1166.4 LEVELS MONITORED OR ESTIMATED IN THE ENVIRONMENT ................................... 1166.4.1 Air ....................................................................................................................................... 1166.4.2 Water ................................................................................................................................... 1186.4.3 Sediment and Soil ............................................................................................................... 1206.4.4 Other Environmental Media ................................................................................................ 1216.5 GENERAL POPULATION AND OCCUPATIONAL EXPOSURE .......................................... 1216.6 EXPOSURES OF CHILDREN ................................................................................................... 1246.7 POPULATIONS WITH POTENTIALLY HIGH EXPOSURES ................................................ 1266.8 ADEQUACY OF THE DATABASE .......................................................................................... 1266.8.1 Identification of Data Needs ............................................................................................... 1276.8.2 Ongoing Studies .................................................................................................................. 1297. ANALYTICAL METHODS ............................................................................................................... 1317.1 BIOLOGICAL MATERIALS ..................................................................................................... 1317.2 ENVIRONMENTAL SAMPLES ................................................................................................ 1337.3 ADEQUACY OF THE DATABASE .......................................................................................... 1377.3.1 Identification of Data Needs ............................................................................................... 1407.3.2 Ongoing Studies .................................................................................................................. 1408. REGULATIONS, ADVISORIES, AND GUIDELINES ..................................................................... 1419. REFERENCES .................................................................................................................................... 14710. GLOSSARY ...................................................................................................................................... 209***DRAFT FOR PUBLIC COMMENT***