Geologic radon potential of EPA Region 10

Alaska, Idaho, Oregon, and Washington

Publisher: The Survey, Publisher: [Books and Open-File Reports Section, distributor] in [Denver, CO]

Written in English
Published: Pages: 146 Downloads: 872
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Subjects:

  • Radon,
  • Radioactive pollution of soils -- Northwest, Pacific

Edition Notes

StatementU.S. Department of the Interior, U.S. Geological Survey ; prepared in cooperation with the U.S. Environmental Protection Agency
SeriesOpen-file report -- 93-292-J, U.S. Geological Survey open-file report -- 93-292-J
ContributionsSchumann, R. Randall, Geological Survey (U.S.), United States. Environmental Protection Agency
The Physical Object
FormatMicroform
Paginationii, 146 leaves
Number of Pages146
ID Numbers
Open LibraryOL14450253M
OCLC/WorldCa30696884

Geologic radon potential of EPA Region 2; New Jersey and New York Open-File Report B Edited by: R.R. Schumann. Geologic radon potential of EPA Region 3; Delaware, Maryland, Pennsylvania, Virginia, and West Virginia Open-File Report C Edited by: R.R. Schumann.   We detected arsenic at levels higher than the EPA maximum contaminant level in 10 (%) samples. We detected elevated radon in 48 (%) samples. Geologic age of the region was indicative of whether arsenic and radon were present at levels that exceeded current EPA drinking water standards. Get this from a library! Geologic radon potential of EPA Region 8: Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming. [R Randall Schumann; United.

Geologic radon potential of EPA Region 7; Iowa, Kansas, Missouri, and Nebraska Open-File Report G Edited by: R.R. Schumann.   Two of these four formation categories had median radon values of pCi/L or greater, the EPA action level for radon (U.S. Environmental Protection Agency (EPA), ). The two geologic formation types with the highest radon levels were older bedrock units (Ordovician or Silurian; to million years old). Radon Map. Here you can see a map showing the areas predicted to be at particular risk from radon, called High Radon Areas. A High Radon Area is any area where it is predicted that 10 per cent or more of homes will exceed the Reference Level of bequerel per cubic metre (Bq/m 3).Any area that is coloured light or dark brown on the map is a High Radon Area. radon potential categories. However, provisional high or moderate radon potential assignments are not made based upon soil data alone (i.e., if indoor-radon or uranium data are unavailable). The data evaluation steps just described result in groupings of very high, high, moderate, low and unknown radon potential geologic units.

The dependence of IRC on building and geologic factors has previously been studied in various papers. Statistical associations between radon measurements and housing factors as well as geologic indicators of high radon potential have been investigated in Canada, USA [15,16,18,19] and Europe [11,20–26]. Indoor Radon Abatement Act directed the US EPA to identify geographical areas with the potential for elevated indoor radon concentrations within the United States (US) (EPA ). The US EPA Radon Index Matrix Model was developed to determine these geographical areas. The model used five factors: indoor radon measurements, domicile.   Sections and of the Indoor Radon Abatement Act of (IRAA) directed EPA to list and identify areas of the U.S. with the potential for elevated indoor radon levels. EPA’s Map of Radon Zones assigns each of the 3, counties in the U.S. to one of three zones based on radon potential.   Purpose. Therefore, the purpose of this study is to evaluate the effectiveness of in situ gamma instrument readings from nearby/interspersed undisturbed environments for assessing radon potential in urbanized environments. The two main objectives are as follows: (1) to create a spatially complete database of forest-soil gamma instrument readings for the entire study region, and (2) to.

Geologic radon potential of EPA Region 10 Download PDF EPUB FB2

Get this from a library. Geologic radon potential of EPA Region Alaska, Idaho, Oregon, and Washington. [R Randall Schumann; Geological Survey (U.S.); United. EPA REGION 10 GEOLOGIC RADON POTENTIAL SUMMARY by James K, Otton, Kendall A. Dickinson, Douglass E.

Owen, and Sandra L. Szarzi U.S. Geological Survey EPA Region 10 includes the states of Alaska, Idaho, Oregon, and Washington. For each state, geologic radon potential areas were delineated and ranked on the basis of geologic, soils, housing.

The USGS geologic radon potential books are organized by EPA region, with individual chapters for each of the 50 states. The reports also include summaries of existing indoor radon data for each state.

Return to USGS Radon Information. Moderate radon potential indicates that one-third to one-half of the homes have more than 4 pCi/L. High Radon potential means that the majority of homes contain more than 4 pCi/L. (55 kb) Radon potential, Montgomery and Prince Georges County, Maryland, and Fairfax County, Virginia.

( kb) Several factors are used to estimate the geologic. Instead, soil-gas radon distribution appears to be controlled by the solution of carbonate bedrock and the subsequent development of thick, red, clay-rich residuum, which may contain as much as 4 times the concentration of radium, 10 times the concentration of uranium, and 5 times the concentration of thorium as the underlying bedrock.

The Indoor Radon Abatement Act of (Public Law ) directed the U.S. Environmental Protection Agency (EPA) to identify areas of the United States that have the potential to produce harmful levels of indoor radon. These characterizations were. In comparison with other geologic terranes, the Coastal Plain of the eastern and southern United States is a region of low to moderate radon potential with local areas of high radon potential.

Analyses were made of soil radon concentrations, soil permeability, and equivalent uranium concentrations. The Map of Radon Zones was developed using data on indoor radon measurements, geology, aerial radioactivity, soil parameters, and foundation types.

EPA recommends that this map be supplemented with any available local data in order to further understand and predict the radon potential. USGS publishes "geologic radon potential" books which give thorough information on local radon conditions.

These books are available for each of the EPA's 10 regions, each region covering from 3 to 8 states. Millions of homes and buildings contain high levels of radon gas. EPA's efforts are directed at locating the homes with high.

Geologic radon potential of EPA Region 4 [microform]: Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee / U.S. Department of the Interior, U.S. Geological Survey ; prepared in cooperation with the U.S. Environmental Protection Agency The Survey: [Books and Open-File Reports Section, distributor.

GEOLOGIC RADON POTENTIAL OF EPA REGION 6 Arkansas, Louisiana, New Mexico, Oklahoma, and Texas R. Randall Schumann EDITOR OPEN-FILE REPORT F Prepared in cooperation with the U.S.

Environmental Protection Agency This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey. Soil-air radon data Soil surveys Indoor radon data Radon potential maps Evaluating radon potential Sources of Radon Information; Suggested Reading.

This publication is one of a series of general interest publications prepared by the U.S. Geological Survey to provide information about the earth sciences, natural resources, and the environment. EPA REGION 5 GEOLOGIC RADON POTENTIAL SUMMARY - by R. Randall Schumann, Douglass E. Owen, and Sandra L.

Szarzi U.S. Geological Survey EPA Region 5 comprises the states of Illinois, niuiana, Michigan, Minnesota, Ohio, and Wisconsin. MASSACHUSETTS - EPA Map of Radon Zones Zone 1 Zone 2 Zone 3 BARNSTABLE BERKSHIRE BRISTOL DUKES ESSEX FRANKLIN HAMPDEN HAMPSHIRE MIDDLESEX NANTUCKET NORFOLK PLYMOUTH SUFFOLK WORCESTER This map is not intended to determine if a home in a given zone should be tested for radon.

Homes with elevated levels of radon have been found in all three zones. Nearly one out of every 15 homes in the U.S. is estimated to have elevated radon levels (EPA, ). That number is likely to be much higher throughout most of Colorado.

Maps recently published by the EPA showing radon potential in Colorado on a county by county basis, rate most counties in the highest of three categories (EPA, ). A new high spatial resolution radon risk map of Ireland was developed in this project, based on a combination of indoor radon measurements collated by the Environmental Protection Agency (n=31,) and relevant geological information (i.e.

bedrock geology, subsoil geology, soil permeability and aquifer type). We find that bedrock and drift geology classes can account for around 40% of the total observed variation in radon potential. We test geology-based predictions of RP (radon potential) against locally-derived estimates of RP, and produce classification matrices with kappa values in the range – 1.

The USGS/EPA State Radon Potential Assessments: An Introduction 1 Linda C.S. Gundersen, R. Randall Schumann, and Sharon W. White Appendix A: Geologic Time Scale 19 Appendix B: Glossary of Terms 20 Appendix C: EPA Regional Offices, State Radon Contacts, 26 and State Geological Surveys 2.

EPA Region 7 Geologic Radon Potential Summary The geologic radon potential of the United States was recently assessed by the U.S. Geological Survey. Results indicate that approximately 33% of the U.S.

population lives within geologic provinces where the average indoor radon levels have the potential to be greater than 4 pCi/L ( Bq/m3). Rock types most commonly associated with high indoor radon include: 1) Uraniferous metamorphosed.

characteristics of geologic provinces to radon potential. With reference to this work, the "EPA's Map of Radon Zones: Illinois," (United States Environmental Protection Agency, ) states: "It is important to note that EPA's International Radon Symposium 1 - The following summary of radon potential in Region 1 is based on these provinces.

Figure 2 shows average screening indoor radon levels by county, calculated from the State/EPA Residential Radon Survey data. Figure 3 shows the geologic radon potential of areas in Region 1, combined and summarized from the individual state chapters.

An example of a national radon potential map of Norway using mapped geology and indoor radon, and based on RP with 70% confidence limits. Download: Download full-size image; Fig. A detail from Fig. 7, showing a radon potential map of the Oslo region using mapped geology and indoor radon, and based on RP with 70% confidence limits.

california - epa map of radon zones zone 1 zone 2 zone 3 butte dorado fresno glenn imperial inyo kern kings lassen madera merced modoc mono nevada placer plumas riverside san bernardino shasta siskiyou sonoma tehama tulare ventura yuba del norte humboldt mendocino yolo colusa napa el lake diego san orange san luis obispo monterey lumne tuo-posa.

The Department of Conservation, California Geological Survey (CGS) has completed a radon potential map and report for Amador, Calaveras, and Tuolumne Counties, California. The map identifies areas more likely, and areas less likely, to have indoor-radon measurements exceeding the U.S.

EPA recommended action level of 4 pCi/L. Get this from a library. Geologic radon potential of EPA Region 2: New Jersey and New York. [R Randall Schumann; Geological Survey (U.S.); United States.

Environmental Protection Agency.;]. Geologic radon potential of EPA Region 8; Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming Open-File Report H. alabama - epa map of radon zones 3 e n o 2z e n o 1z e n o z baldwin barbour bibb blount bullock butler chilton clarke clay coffee colbert conecuh coosa cullman dale dallas elmore escambia etowah fayette franklin geneva greene hale henry houston jackson jefferson lamar lauderdale lee lowndes macon madison marengo marion mobile monroe morgan.

Radon Mapping Methodology The company based its core methodology on the USGS approach to the development of the Geologic Radon Potential Map of the United States. Several data sets common to both Canada and the US were identified.

The relationship of these datasets to the three radon potential classes in the US was evaluated. The combination of archive geological data and the results of representative radon survey allow estimating the typical parameters of radon concentration distribution for selected categories of buildings (multi-storey or rural type houses) situated in geological zones with the different radon potential.

GEOLOGIC RADON POTENTIAL OF EPA REGION 3 Delaware, Maryland, Pennsylvania, Virginia, and West Virginia R. Randall Schumann EDITOR OPEN-FILE REPORT C Prepared in cooperation with the U.S. Environmental Protection Agency This report is preliminary and has not been reviewed for conformity with U.S.

Geological Survey. The following is a brief, generalized discussion of the bedrock and glacial geology of EPA Region 5 as they pertain to indoor radon. More detailed discussions may be found in the individual state geologic radon potential chapters. Western and southern Minnesota are underlain by deposits of the Des Moines and Red River glacial lobes.Figure 3 shows the geologic radon potential areas in Region 8, combined and summarized from the individual state chapters.

Rocks and soils in EPA Region 8 contain ample radon source material (uranium and radium) and have soil permeabilities sufficient to produce moderate or high radon .The following information is from the EPA Region 6 Geologic Radon Potential Summary (): The geologic radon potential of Arkansas is generally low to moderate.

Paleozoic marine limestones, dolomites, and uraniferous black shales appear to be associated with most of the indoor radon levels greater than 4 pCi/L in the State.