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An evaluation of well-water nitrate exposure and related health risks in the Lower Umatilla Basin of Oregon

Creator:: Mitchell, Thomas J.
Abstract:: Excessive nitrates in drinking water pose a human health threat, especially to infants. Methemoglobinemia, or blue-baby syndrome, is a potentially fatal condition that inhibits the ability of red blood cells to bind and transport oxygen. Nitrates/nitrites have also been linked to such conditions as cancer, birth defects, and behavioral and...
Resource Type:: Masters Thesis
Full Text:: ) in Morrow and Umatilla counties of Oregon represents an intensively farmed and irrigated area in

Nitrate leaching and model evaluation under winter cover crops

Creator:: Minshew, Hudson F.
Resource Type:: Masters Thesis
Full Text:: of Master of Science in Soil Science presented on November 11, 1998. Title: Nitrate Leaching and

Nitrate and water under terraced dryland wheat production in Oregon

Creator:: Strock, Jeffrey S.
Abstract:: Dry land agriculture using summer fallow is a common crop production practice in the Columbia Plateau region of eastern Oregon. Farmed-over level terraces are used to control surface water runoff and soil erosion. More than 70 percent of the average annual precipitation around Pendleton, Oregon (350 - 400 mm) falls...
Resource Type:: Masters Thesis
Full Text:: Nitrate and water under terraced dryland wheat production in

Quantification of the nitrate attenuation capacity of low-permeability Missoula Flood deposits in the Willamette Valley of Oregon

Creator:: Arighi, Louis M.
Abstract:: Low-permeability geologic units may offer significant chemical and hydraulic protection of adjacent aquifers, and are important for managing groundwater quality, especially in areas with significant non-point source contamination. Nitrate in the Willamette Valley is attenuated across the Willamette Silt, a semi-confining unit overlying a regionally important aquifer. To quantify the...
Resource Type:: Masters Thesis
Full Text:: Survey, the Oregon Department of Environmental Quality, and ChevronTexaco. TABLE OF CONTENTS

Temporal and spatial variability of groundwater nitrate in the southern Willamette Valley of Oregon

Creator:: Mutti, Jeffrey Glenn
Abstract:: Groundwater nitrate contamination is a well-documented issue in the Southern Willamette Valley (SWV) of Oregon, as a Groundwater Management Area (GWMA) has recently been declared. As a GWMA, groundwater nitrate monitoring must occur until regional concentrations are below 7 mg/L NO3-N. However, the presence of temporal variability can make it...
Resource Type:: Masters Thesis
Full Text:: Oregon Abstract approved: Roy D. Haggerty Groundwater nitrate contamination is a well

Deep soil nitrogen survey, Lower Umatilla Basin, Oregon

Creator:: del Nero, Zachary Augustus
Abstract:: Soils of 49 agricultural and 2 "native condition" sites in the Lower Umatilla Basin, Oregon were sampled for nitrate-nitrogen, ammonium-nitrogen, chloride, and pH beginning in Fall of 1992. Several sites were sampled in Spring and Fall 1993 in order to indicate movement or loss of residual soil nitrogen over time....
Resource Type:: Masters Thesis
Full Text:: Umatilla Basin, Oregon were sampled for nitrate-nitrogen, ammonium-nitrogen, chloride, and pH beginning

A statistical evaluation of the water quality impacts of Best Management Practices installed at Tillamook County dairies

Creator:: Dorsey-Kramer, Jadene
Abstract:: The overall goal of this study was to determine if the Tillamook Bay tributaries' water quality has improved as a result of the Best Management Practices (BMP) installed at Tillamook County Dairies. The Rural Clean Water Program (RCWP) was a 10 to 15 year experiment designed to control agricultural non-point...
Resource Type:: Masters Thesis
Full Text:: County, Oregon promoted the installation of manure management facilities and nutrient management

Monitoring potential groundwater contamination due to agricultural production in Lane County, Oregon

Creator:: Gatchell, Lance O.
Resource Type:: Masters Thesis
Full Text:: subsurface samplers. Soil cores were collected on five farms in Lane County, Oregon at 1 m depth and soil

A household hazardous waste survey of Benton County, OR

Creator:: McEvoy, John
Abstract:: Every year, the United States produces at least 236 million metric tons of hazardous waste. Hazardous waste is defined as solid waste that can pose a substantial threat to human health and the environment when disposed of incorrectly. Some commonly used household products, when disposed of, become hazardous waste; historically,...
Resource Type:: Masters Thesis
Full Text:: an environmental health risk, and preferences for a safe disposal system. Benton County residents

Assessment of public awareness of septic systems in rural Benton County

Creator:: Gillett, Christopher S.
Abstract:: The primary objective of this study was two-fold: (1) to assess home owners awareness about issues pertaining to their septic systems; (2) and to determine the effect climate, proper care and maintenance have on septic tank performance in rural Benton County. Participants in this study were randomly selected by Benton...
Resource Type:: Masters Thesis
Full Text:: LITERATURE 7 2.1 History 7 2.2 Benton County septic systems 8 2.3 Current regulations in Oregon and

ScholarsArchive@OSU

An evaluation of well-water nitrate exposure and related health risks in the Lower Umatilla Basin of Oregon

Nitrate leaching and model evaluation under winter cover crops

Nitrate and water under terraced dryland wheat production in Oregon

Quantification of the nitrate attenuation capacity of low-permeability Missoula Flood deposits in the Willamette Valley of Oregon

Temporal and spatial variability of groundwater nitrate in the southern Willamette Valley of Oregon

Deep soil nitrogen survey, Lower Umatilla Basin, Oregon

A statistical evaluation of the water quality impacts of Best Management Practices installed at Tillamook County dairies

Monitoring potential groundwater contamination due to agricultural production in Lane County, Oregon

A household hazardous waste survey of Benton County, OR

Assessment of public awareness of septic systems in rural Benton County

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