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Some ecological attributes and plutonium contents of perennial vegetation in Area 13

Description: Progress is reported on work conducted at the Nevada Test Site under the auspices of the Nevada Applied Ecology Group, Office of Effects Evaluation, USAEC Nevada Operations Office, Las Vegas. Nevada. Included are data on some ecological attributes of the vegetation within thc fenced portion of the Project 57 fallout pattern in Area 13. Also included are some preliminary data on the / sup 239/-240/Pu and /sup 241/Am in samples of vegetation collected in conjunction with the soil sampling program. Prominent shrub and grass species in the fallout pattern of Area 13 include Artemisia spinescens, Atriplex canescens, Atriplex confertifolia, Eurotia lanata, Grayia spinosa, Kochia americana, Lycium andersonii, and Oryzopsis hymenoides. Individual or co-dominant species distinguished local association pattarns of varied size within the fenced study area. Vegetation cover estimates in sample study plots ranged from 12.8 to 25.3 percent. Shrub densities ranged from 11.2 x 10/sup 3/ to 17.9 x 10/sup 3/ plants per hectare, and the standing shrub biomass ranged from 1592 to 4255 kilograms per hectare (0.7 to 1.9 tons per acre). Preliminary results showed rather uniform distributions of /sup 239-240/Pu and /sup 241/Am among indiividual samples of the same plant species collected within an intensive study plot. However, there was considerable variation in the contamination levels between different species, presumably from superficial entrapment of resuspended particulate material. Concentrations in Eurotia lanata were three to five times higher than in other species sampled from the same study site. The /sup 239-240/ Pu and /sup 241/Am generally tended to decrease in samples of vegetation collected at increasing distances from ground zero, but there were poor correlations between vegetation and soil /sup 239-240/Pu concertrations in isopleth strat within the fenced grazing area. Results showed inconsistencies in the Pu/Am ratios for vegettion and soil. Lower ratios found in vegetation samples indicate ...
Date: November 1, 1973
Creator: Romney, E.M.; Wallace, A.; Gilbert, R.O.; Bamberg, S.A.; Childress, J.D.; Kinnear, J.E. et al.
Partner: UNT Libraries Government Documents Department

Environmental status of the Hanford reservation for January--June 1969

Description: Data are presented on the radioactivity in environmental samples collected within the Hanford plant boundaries during the first six months of 1969. Data are included on the total BETA activity and content of /sup 90/Sr and tritium in samples of Columbia River water; the total BETA activity in samples of drinking water; the total alpha and BETA activity and content of /sup 137/ Cs, /sup 51/Cr, and /sup 65/Zn in samples of su rface waters; the content of /sup 32/P, /sup 40/K, /sup 134/Cs, /sup 137/Cs, and /sup 65/Zn in the tissues of game birds feeding on the area; the total BETA activity and content of /sup 131/I in samples of surface air; the total alpha , total BETA , and total gamma activity and content of /sup 95/Zr-Nb, /sup 106/Ru, /sup 131/I, /sup 137/Cs, /su p 140/Ba, and /sup 144/Ce in samples of air filters; the total alpha and total BETA activity and content of /sup 137/Cs and /sup 144/Ce in samples of vegetation; and results of aerial surveys of gamma activity conducted at an altitude of 500 feet. Estimates were made of the average external gamma exposure rates of personnel. Increased BETA activity in the atmosphere was due to fallout. (CH)
Date: April 1, 1970
Creator: Wilson, C.B. & Essig, T.H. (eds.)
Partner: UNT Libraries Government Documents Department

Environmental status of the Hanford reservation for July--December 1969

Description: Data are reported on the radioactivity of environmental samples collected from locations within the Hanford plant boundaries during the last six months of 1969. Data are included on: the total alpha activity and content of / sup 90/Sr and tritium in samples of Columbia River water; the total BETA activity of samples of drinking water; the total alpha , BETA , and gamma activity of samples of surface wnters; the total BETA activity and /sup 131/I content of samples of surface air; and the total alpha , BETA , and gamma activity and content of /sup 95/Zr, /sup 106/Ru, /sup 134/Cs, /sup 137/Cs, /sup 140/Ba, /sup 144/Ce, /sup 238/Pu, /sup 239/Pu and /sup 240/Pu of air filter samples. Est imates were made of the average external gamma - radiation exposure rates of personnel. (CH)
Date: May 26, 1970
Creator: Wilson, C.B. & Essig, T.H. (eds.)
Partner: UNT Libraries Government Documents Department

Project Rio Blanco radioactivity and the environment

Description: Data are presented on radiological measurements of the environment and on documenting the transfer to a subsurface disposal well of radioactive water separated from the produced gas stream. Analysis of gas and water through the drilling well control unit revealed the presence of $sup 3$H and $sup 85$Kr in the gas and $sup 3$H, $sup 137$Cs, and $sup 90$Sr in the water. The production test, disposal system, and radiological monitoring system are described. Data on effluents are presented under the headings: gas and water production, radioactivity concentrations in gas, radioactivity concentrations in separator water samples, radioactivity concentrations in injected water volumes, and disposition of radioactivity. Tritium, $sup 39$Ar, $sup 14$C, $sup 85$Kr, and $sup 222$Rn were present in gas. Tritium, $sup 134$CCs, $sup 137$Cs, $sup 90$Sr, $sup 75$Se, and $sup 106$Ru were present in separator water samples. Data on environmental monitoring and RB-AR-2 drilling and testing are presented under the headings air sampling, air moisture and precipitation sampling, soil sampling, water sampling, Fawn Creek sediments and algae/moss samples, bioassays, aerial surveillance, and potential environmental radiation doses. (HLW)
Date: October 1, 1975
Partner: UNT Libraries Government Documents Department

Natural iodine and iodine-129 in mammalian thyroids and environmental samples taken from locations in the United States

Description: From symposium on enviromnental surveillance around nuclear installation; Warsaw, Poland (5 Nov 1973). Bovine and other mammalian thyroids, air, precipitation, water, grass, and milk samples from selected locations were analyzed for their natural iodine and iodine-129 content. Particle filters and activated charcoal beds were used to collect the particulate and gaseous iodine fractions from the air. Anion exchange was used for the separation of iodine from liquid samples. Cumbustion methods were used for iodine separation from solid samples, anlon exchange resins, and air filters. Iodine-129 and natural iodine concentrations were determined by neutron activation analysis with a detection limit of about 10/sup 8/ atoms of iodine-129 per sample. Analytical results of both /sup 129/I concentrations and ratios of atoms of /sup 129/I per atom of /sup 127/I for these samples are summarized. The small radiation doses to human thyroids projected from these low /sup 129/I concentrations are also discussed. (auth)
Date: January 1, 1973
Creator: Brauer, F.P.; Soldat, J.K.; Tenny, H. & Strebin, R.S. Jr.
Partner: UNT Libraries Government Documents Department

Environmental status of the Hanford reservation for 1970

Description: Data are summarized on the radioactivity in environmental samples collected from various locations within the Hanford plant boundaries during 1970. Data are included on the content of /sup 90/Sr, /sup 32/P, /sup 46/Sc, /sup 51/ Cr, /sup 65/Zn, /sup 131/I, /sup 2 4/Na and tritium in samples of water from the Columbia River; the total BETA activity in samples of drinking water; the total alpha and BETA activity in samples of surface waters; the radioactivity in tissue samples from waterfowl, game birds, deer, and small mammals feeding on the area; the total BETA activity and /sup 131/I content in samples of surface air; and the total alpha , BETA , and gamma activity in samples of air filters from various locations. (CH)
Date: June 1, 1972
Creator: Bramson, P.E. (ed.)
Partner: UNT Libraries Government Documents Department

1973 environmental monitoring report

Description: >Results from radiation monitoring during 1973 in the environment of the Brookhaven National Laboratory are presented. Data are included on: the gross alpha and BETA activity and content of tritium and gamma-emitting radionuclides in surface air; gross BETA activity and gamma and tritium content in atmospheric precipitation; activities and concentration of gamma emitters in liquid effiuents and ground water; gross BETA , tritium and /sup 90/Sr in effluents; gross BETA and tritl um in surface waters; /sup 90/Sr and gamma- emitting radionuclides in river ecosystem; gross alpha , gross BETA , tritium, / sup 90/Sr, and /sup 137/Cs in ground and well water; /sup 137/Cs, K, /sup 131/I, and /sup 90/Sr content in area milk; and gamma-emitting radionuclides in soils and grasses. (LCL)
Date: March 1, 1974
Creator: Hull, A.P. & Ash, J.A.
Partner: UNT Libraries Government Documents Department