A 50-year record of NOx and SO2 sources in precipitation in the Northern Rocky Mountains, USA

Ice-core samples from Upper Fremont Glacier (UFG), Wyoming, were used as proxy records for the chemical composition of atmospheric deposition. Results of analysis of the ice-core samples for stable isotopes of nitrogen (δ15N, ) and sulfur (δ34S, ), as well as and deposition rates from the late-1940s thru the early-1990s, were used to enhance and extend existing National Atmospheric Deposition Program/National Trends Network (NADP/NTN) data in western Wyoming. The most enriched δ34S value in the UFG ice-core samples coincided with snow deposited during the 1980 eruption of Mt. St. Helens, Washington. The remaining δ34S values were similar to the isotopic composition of coal from southern Wyoming. The δ15N values in ice-core samples representing a similar period of snow deposition were negative, ranging from -5.9 to -3.2 ‰ and all fall within the δ15N values expected from vehicle emissions. Ice-core nitrate and sulfate deposition data reflect the sharply increasing U.S. emissions data from 1950 to the mid-1970s

Handbook of groundwater remediation using permeable reactive barriers : applications to radionuclides, trace metals, and nutrients /

Over the last century and a half, groundwaters have become contaminated by a growing number of organic and inorganic substances ranging from petroleum-derived hydrocarbons to radioactive compounds, to cancer-causing hexavalent chromium. The importance of uncontaminated groundwater for agriculture, human consumption, and the environmental health of ecosystems is paramount to the health and productivity of industrial society. Water scientists and managers are focused on developing cost-effective methods to reverse this trend. Several methodologies have been developed, however few are as cost-eff.Includes bibliographical references and index.Print version record.Front Cover; Handbook of Groundwater Remediation Using Permeable Reactive Barriers: Applications to Radionuclides, Trace Metals, and Nutrients; Copyright Page; Contents; Contributors; Foreword; Preface; About the Editors; Acknowledgments; Chapter 1. Introduction To Groundwater Remediation of Metals, Radionuclides, and Nutrients with Permeable Reactive Barriers; Introduction; History of PRBs for Metals, Radionuclides, and Nutrients; Contaminant Uptake Mechanisms; Longevity; Designs; Goals of this Book; References.Over the last century and a half, groundwaters have become contaminated by a growing number of organic and inorganic substances ranging from petroleum-derived hydrocarbons to radioactive compounds, to cancer-causing hexavalent chromium. The importance of uncontaminated groundwater for agriculture, human consumption, and the environmental health of ecosystems is paramount to the health and productivity of industrial society. Water scientists and managers are focused on developing cost-effective methods to reverse this trend. Several methodologies have been developed, however few are as cost-eff.Elsevie

Selenium and associated trace elements in soil, rock, water and streambed sediment of the proposed Sandstone Reservoir, south-central Wyoming /

Col. map on 1 folded leaf in pocket.Shipping list no.: 92-149-P.Includes bibliographical references (p. 59-67).Mode of access: Internet

Geohydrology of tertiary rocks in the upper Colorado River Basin in Colorado, Utah, and Wyoming, excluding the San Juan Basin /

One ill. on folded leaf in pocket.Shipping list no.: 99-0054-P.Includes bibliographical references (p. 100-103).Mode of access: Internet

Geochemistry of selected aquifers in Tertiary rocks of the Upper Colorado River Basin in Wyoming, Colorado, and Utah /

Shipping list no.: 97-0079-P."Regional Aquifer-System Analysis"--Cover."Prepared in cooperation with the Wyoming State Engineer"--Cover.Includes bibliographical references (p. 44-45).Mode of access: Internet