Verplanck, P L

7 items:

Questa baseline and pre-mining ground-water quality investigation. 20. Water chemistry of the Red River and selected seeps, tributaries, and precipitation, Taos County, New Mexico, 2000-2004 As part of a multi-year project to infer the pre-mining ground-water quality at Molycorp‘s Questa mine site, surface-water samples of the Red River, some of its tributaries, seeps, and snow samples were collected for analysis of inorganic solutes and of water and sulfate stable isotopes in selected samples. The primary aim of this study was to document diel, storm event, and seasonal variations in water chemistry for the Red River and similar variations in water chemistry for Straight Creek, a natural analog site similar in topography, hydrology, and geology to the mine site for inferring pre-mining water-quality conditions. Red River water samples collected between 2000 and 2004 show that the largest variations... Categories: Publication; Types: Citation
Chemical Analyses of Ground and Surface Waters, Ester Dome, Cental Alaska, 2000-2001 Water analyses are reported for ground and surface waters collected at 33 sites on and near Ester Dome, Fairbanks area, central Alaska during 2000-2001. This interdisciplinary study focused on documenting the temporal and spatial chemical variations in arsenic concentrations to elucidate the processes that lead to elevated arsenic concentrations in ground water. Field parameters and water analyses are reported for 17 domestic wells, 13 monitoring well sites, and 3 surface water sites. Sampling occurred during November 2000, February 2001, May 2001, July 2001, and September 2001. Waters in the study area are primarily Ca-HCO3 type, with pH values ranging from 5.97 to 7.87. Dissolved arsenic concentrations ranged... Categories: Publication; Types: Citation
Estimating natural background groundwater chemistry, Questa Molybdenum Through the Generations: Geologic and Anthropogenic Field Excursions in the Rocky Mountains from Modern to Ancient Categories: Publication; Types: Citation
Water-chemistry data for selected springs, geysers, and streams in Yellowstone National Park, Wyoming, 1999-2000. Categories: Publication; Types: Citation
Environmental setting and hydrology of the Boulder Creek Watershed, Chapter 1 Categories: Publication; Types: Citation

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