Search Results

open access

Validation and sensitivity of a simulated photograph technique for visibility modeling

Description: The Los Alamos Scientific Laboratory (LASL) visibility model is capable of producing simulated before and after pictures that illustrate visual effects of smoke plumes. Although the model has been under development for a few years, until recently there had been very little testing of the model against field experience or testing of sensitivity of the model results to numerical approximations used in the model. Further validation and sensitivity testing of the LASL model began in late 1979. The … more
Date: January 1, 1980
Creator: Williams, M.; Chan, L.Y. & Lewis, R.
Partner: UNT Libraries Government Documents Department
open access

(Environmental investigation of ground water contamination at Wright-Patterson Air Force Base, Ohio)

Description: This report presents information concerning field procedures employed during the monitoring, well construction, well purging, sampling, and well logging at the Wright-Patterson Air Force Base. Activities were conducted in an effort to evaluate ground water contamination.
Date: October 1, 1991
Partner: UNT Libraries Government Documents Department
open access

Environmental assessment for the Satellite Power System (SPS) Concept Development and Evaluation Program (CDEP). [Microwave and non-microwave health and ecological assessment]

Description: In the satellite power system (SPS), satellites in geosynchronous earth orbit would collect solar energy in space, convert it to microwaves, and transmit the microwaves to receiving antennas (rectennas) on earth. At the rectennas, the microwave energy would be converted to electricity. This SPS environmental assessment considers the microwave and nonmicrowave effects on the terrestrial environment and human health, atmospheric effects, and effects on electromagnetic systems. No environmental pr… more
Date: August 1, 1980
Creator: Valentino, A.R.
Partner: UNT Libraries Government Documents Department
open access

Simulation of chlorinated water discharges from power plants on estuaries and rivers

Description: The fast-transient (tidal-transient) one-dimensional discrete-element chemical transport model and its associated computer code CHMONE were applied to study the effects of chlorinated water discharges from power plants on tidal estuaries and controlled rivers. The mathematical model has the capability to predict simultaneously the hydrodynamic, thermal, and chemical composition of water as one-dimensional time-dependent distributions. (LTW)
Date: January 1, 1977
Creator: Eraslan, A. H.; Lietzke, M. H.; Fischer, S. K. & Kalmaz, E. V.
Partner: UNT Libraries Government Documents Department
open access

Innovative approach to asbestos removal

Description: The most common asbestos materials used at the Savannah River site include: steam pipe insulation; powerhouse boiler insulation; wallboards; roofing materials; and cement products. Asbestos was also found in a number of other materials: aprons; gaskets; laboratory hot pads; and talcum powder used for gloves. Techniques for removal; personnel training; mechanical ventilation; and personnel isolation techniques are described for completing asbestos removal safely and without boiler downtime. (PSB) more
Date: January 1, 1984
Creator: Kahal, E J
Partner: UNT Libraries Government Documents Department
open access

(Environmental investigation of ground water contamination at Wright-Patterson Air Force Base, Ohio)

Description: An environmental investigation of ground water conditions has been undertaken at Wright-Patterson Air Force Base (WPAFB), Ohio to obtain data to assist in the evaluation of a potential removal action to prevent, to the extent practicable, migration of the contaminated ground water across Base boundaries. Field investigations were limited to the central section of the southwestern boundary of Area C and the Springfield Pike boundary of Area B. Further, the study was limited to a maximum depth of… more
Date: March 1, 1992
Partner: UNT Libraries Government Documents Department
open access

Statistical relationship between median visibility and conditions of worst-case manmade impact on visibility

Description: A study was conducted of the statistical relationships between median visibility and the levels of visibility associated with worst-case manmade impacts. The data base for the study consisted of midday visibility recordings for the years 1974-1976 at 28 suburban/nonurban airports throughout the United States. The visibility recordings were converted to estimates of extinction coefficients with the use of the Koschmeider formula. The data were sorted according to meteorology in order to eliminat… more
Date: January 1, 1980
Creator: Gins, J.D.; Nochumson, D. & Trijonis, J.
Partner: UNT Libraries Government Documents Department
open access

An update on environmental, health and safety issues of interest to the photovoltaic industry

Description: There is growing interest in the environmental, health, and safety issues related to new photovoltaic technologies as they approach commercialization. Such issues include potential toxicity of II--VI compounds; the impacts of new environmental regulations on module manufacturers; and, the need for recycling of spent modules and manufacturing wastes. This paper will review these topics. 20 refs.
Date: January 1, 1992
Creator: Moskowitz, P. D.; Viren, J. & Fthenakis, V. M.
Partner: UNT Libraries Government Documents Department
open access

Review of Gaussian diffusion-deposition models

Description: The assumptions and predictions of several Gaussian diffusion-deposition models are compared. A simple correction to the Chamberlain source depletion model is shown to predict ground-level airborne concentrations and dry deposition fluxes in close agreement with the exact solution of Horst.
Date: January 1, 1979
Creator: Horst, T.W.
Partner: UNT Libraries Government Documents Department
open access

Surface footprint from initial Chernobyl release as indicated by the meso-alpha MLAM (Multi-Layer Air Mass) model

Description: This document reports the results of dose calculations from the Chernobyl reactor accident in April 1986. The calculations were completed in 1987. The results are now being published to disseminate the information to an audience of potential users. This study's objective was to model the transport path of materials released during April 26 and 27, the first 48 hours of the accident. 5 refs., 15 figs.
Date: December 1, 1989
Creator: Davis, W. E.; Olsen, A. R.; Didier, B. T.; Tucker, P. E. & Damschen, D. W.
Partner: UNT Libraries Government Documents Department
open access

Diagnosing vegetation injury caused by air pollution

Description: The structure and function of plants in relation to air pollution injury is discussed. The sources, atmospheric chemistry, monitoring data, symptomatology, factors affecting plant response, injury threshold doses, air quality standards, relative sensitivity of plants, and leaf tissue analysis are discussed for major air pollutants. Among the pollutants discussed are: the photochemical oxidants (ozone, PAN, nitrogen oxides, sulfur dioxide, and fluorides). Minor pollutants discussed in the same f… more
Date: February 1, 1978
Partner: UNT Libraries Government Documents Department
open access

Study of the health effects of bicycling in an urban atmosphere. Final report

Description: This report analyzes data on the health effects of bicycling in an urban environment through intensive study of ten healthy male subjects bicycling or driving in systematically varied conditions in the streets of Washington, D.C. Evaluation criteria for available technology and instrumentation are included and a methodology is developed for route selection. Specific air pollutants (carbon monoxide, ozone, sulfates, nitrates, and particulates) are measured concurrently with exposure and subseque… more
Date: October 14, 1977
Creator: Waldman, M.; Weiss, S. & Articola, W.
Partner: UNT Libraries Government Documents Department
open access

Estimated risk from exposure to radon decay products in US homes

Description: Recent analyses now permit direct estimation of the risks of lung cancer from radon decay products in US homes. Analysis of data from indoor monitoring in single-family homes yields a tentative frequency distribution of annual-average /sup 222/Rn concentrations averaging 55 Bq m/sup -3/ and having 2% of homes exceeding 300 Bq m/sup -3/. Application of the results of occupational epidemiological studies, either directly or using recent advances in lung dosimetry, to indoor exposures suggests tha… more
Date: May 1, 1986
Creator: Nero, A.V. Jr.
Partner: UNT Libraries Government Documents Department
open access

Oak Ridge Reservation Environmental report for 1990

Description: The first two volumes of this report are devoted to a presentation of environmental data and supporting narratives for the US Department of Energy's (DOE's) Oak Ridge Reservation (ORR) and surrounding environs during 1990. Volume 1 includes all narrative descriptions, summaries, and conclusions and is intended to be a stand-alone'' report for the ORR for the reader who does not want to review in detail all of the 1990 data. Volume 2 includes the detailed data summarized in a format to ensure th… more
Date: September 1, 1991
Creator: Wilson, A.R. (ed.)
Partner: UNT Libraries Government Documents Department
open access

Diffusion estimation for small emissions. Preliminary report

Description: A simplified approach is presented to the calculation of ground level concentrations of effluents from small industrial and fuel burning installations. It is intended to serve as a first approximation to a very complex process. Because each stack, building, and terrain configuration is different, actual ground concentrations may frequently differ from the values calculated here by a factor of two. Nonetheless, this procedure should be useful for determining whether ambient air quality standards… more
Date: May 1, 1973
Creator: Briggs, G.A.
Partner: UNT Libraries Government Documents Department
open access

Radiological assessment report for the Lansdowne property, 105-107 East Stratford Avenue, Lansdowne, Pennsylvania, October-December 1984

Description: Areas with elevated levels of radioactivity were found throughout both residences, as well as on the surrounding property. Contamination was also found in the garage behind the 105 East structure. The 105 East residence had substantially more contamination than the 107 East residence, as was expected. The chimneys, particularly the rear chimney, from the 105 East residence had extensive contamination, indicating that contaminated materials may have been burned at the site. The high background r… more
Date: September 1, 1985
Creator: Wynveen, R.A.; Smith, W.H.; Sholeen, C.M. & Flynn, K.F.
Partner: UNT Libraries Government Documents Department
open access

Krakow Clean Fossil Fuels and Energy Efficiency Project

Description: In Karkow, Poland almost half of the energy used for heating is supplied by local, solid-fuel-fired boilerhouses and home stoves. These facilities are referred to as the low emission sources'' and are primary contributors of particulates and hydrocarbon air pollution in the city and secondary contributors of sulfur dioxide and carbon monoxide. The Support of Eastern European Democracy Act of 1989 directed the US Department of Energy to undertake an equipment assessment project aimed at developi… more
Date: May 1, 1992
Creator: Butcher, T.A.; Pierce, B.; Krajewski, R.; LaMontagne, J. & Kirchstetter, T.
Partner: UNT Libraries Government Documents Department
open access

Transport and transfer rates in the waters of the continental shelf. Annual report

Description: The goal of govern project is to understand and quantify the processes that the transport and dispersal of energy-related pollutants introduced to the waters of the continental shelf and slope. The report is divided into sections dealing with processes associated with suspended solids; processes associated with sediments sinks for radionuclides and other pollutants; and spreading of water characteristics and species in solution. (ACR)
Date: September 1, 1980
Creator: Biscaye, P. E.
Partner: UNT Libraries Government Documents Department
open access

MAP3S precipitation chemistry network. Third periodic summary report, July 1978-December 1979

Description: The MAP3S Precipitation Chemistry Network consists of eight collection sites in the northeastern United States. Precipitation event samples are collected by cooperating site operators, using specially developed sampling equipment. In this, the third periodic summary report, are listed field and concentration data for the period July 1, 1978 to December 31, 1979. Over three years' samples have been collected at most of the sites, which went into operation between September 1976 and October 1978.… more
Date: May 1, 1980
Partner: UNT Libraries Government Documents Department
open access

Isotope applications in the environmental field

Description: Established uses of enriched isotopes in the environmental field were surveyed to determine future trends in isotope needs. Based on established isotope uses, on the projected increase in the pollution problem, and on the apparent social and economic pressure for pollution abatement, a significant demand for enriched isotopes appears to be developing for the assessment and control of air, water, and soil pollutants. Isotopic techniques will be used in combination with conventional methods of de… more
Date: February 17, 1978
Creator: DeWitt, R.
Partner: UNT Libraries Government Documents Department
open access

Indoor concentrations of radon 222 and its daughters: sources, range, and environmental influences

Description: The author here reviews what is presently known about factors affecting indoor concentrations of radon 222 and its daughters. In US single-family homes, radon concentrations are found to average about 1.5 pCi/1, but substantially higher concentrations occur frequently: perhaps a million US homes have concentrations exceeding 8 pCi/1 (from which occupants receive radiation doses comparable to those now experienced by uranium miners). The major contributor to indoor radon is ordinary soil underly… more
Date: April 1, 1985
Creator: Nero, A.V. Jr.
Partner: UNT Libraries Government Documents Department
open access

Outdoor sources of indoor air pollution

Description: Conservation measures that seal a building, like storm window installation, can significantly reduce its energy requirements. These measures also protect its occupants from air pollutants having outdoor sources but amplify any harmful effects of those generated indoors. Using these Fourier series techniques and an approximation of outdoor pollution peaks by step functions, we obtained the following results: the average daily concentration indoors is the same as outdoors for any pollutant with n… more
Date: November 1, 1977
Creator: Silberstein, S.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen