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baseline studies
Geotechnical Baseline Reports – ground models you can just make up?
A long term baseline and variability of natural radionuclides in groundwater at the Vaalputs low-level radioactive waste disposal facility, Namaqualand, South Africa: regional implications
Case study: methane gas in a groundwater system located in a dolerite ring structure in the Karoo Basin; South Africa
Abstract The Eastern Cape Karoo region is water stressed and will become increasingly so with further climate change. Effective and reliable groundwater management is crucial for a development such as the proposed hydraulic fracturing for shale gas. This is especially critical across this region of agriculture and protected ecosystem services. The research, as part of baseline data gathering, aims to characterize the hydrochemistry for both the shallow groundwater (<500 m) and saline groundwater closer to the c. 2–5 km deep shale gas. The classification will be used to determine possible vertical hydraulic connectivity between the shallow and deep aquifers, prior to anticipated hydraulic fracturing. This paper reports on the baseline framework that includes the sampling design and a hydrocensus with field-recorded parameters shown as interpolated maps. This includes electrical conductivity, groundwater level and borehole yield. Together with completed sampling results, these data provide a record against which the environmental impact of hydraulic fracturing and the reinjection of production water can be determined. The research is a critical first step towards the successful governance of groundwater in light of proposed shale gas development in the Karoo. In its absence, effective regulation of the sector will not be effective.
Interpretation of regional-scale distribution of high Hg in soils of karst area in southwest China
Mo, Sn and W patterns in topsoils of the Campania Region, Italy
Evaluating crop yields, crop quality and soil fertility from organic and conventional farming systems in South Africa’s southern Cape
Geochemically Based Solutions for Urban Society: London, A Case Study
High density, regional, stream sediment geochemistry data as a product of undergraduate training in the Central Wales lead-zinc orefield, UK
Regional distribution of temperature in the Chalk of the western London Basin syncline
Airborne geophysics: a novel approach to assist hydrogeological investigations at groundwater-dependent wetlands
The geochemistry of niobium and its distribution and relative mobility in agricultural soils of Europe
Coral reefs at 34°N, Japan: Exploring the end of environmental gradients
Geochemical background, baseline and origin of contaminants from sediments in the mining-impacted Altiplano and Eastern Cordillera of Oruro, Bolivia
Distribution of iodine in soils of Northern Ireland
Estimating natural background groundwater chemistry, Questa molybdenum mine, New Mexico
Abstract This 2½ day field trip will present an overview of a U.S. Geological Survey (USGS) project whose objective was to estimate pre-mining groundwater chemistry at the Questa molybdenum mine, New Mexico. Because of intense debate among stakeholders regarding pre-mining groundwater chemistry standards, the New Mexico Environment Department and Chevron Mining Inc. (formerly Molycorp) agreed that the USGS should determine pre-mining groundwater quality at the site. In 2001, the USGS began a 5-year, multidisciplinary investigation to estimate pre-mining groundwater chemistry utilizing a detailed assessment of a proximal natural analog site and applied an inter-disciplinary approach to infer pre-mining conditions. The trip will include a surface tour of the Questa mine and key locations in the erosion scar areas and along the Red River. The trip will provide participants with a detailed understanding of geochemical processes that influence pre-mining environmental baselines in mineralized areas and estimation techniques for determining pre-mining baseline conditions.