Total dissolved mercury concentrations (HgT) were measured in groundwaters collected along a flow path within a deep, confined aquifer (i.e., the Carrizo Sand) in southeastern Texas, USA, along with major solutes, pH, and redox sensitive parameters that include dissolved iron species [Fe(II), Fe(III)] and sulfide [S(-II)] concentrations. Mercury concentrations range from below detection (<0.43 ...

Disturbances owing to coal mining result in the movement and failure of floor strata. Mining-induced fractures within may propagate confined aquifer, thereby causing water inrush disasters. In this study, we propose using strip backfill replacement above aquifer investigate depth floor. The problem is simplified as a distributed force model on half-plane body. First, stress disturbance during c...

The implementation of all the United Nations Sustainable Development Goals (SDGs) requires sustainable energy production and consumption; hence issue accountability is vital. There are several studies on activities supreme audit institutions (SAIs); however, research question - what role SAIs in still without an answer. Meanwhile, SAIs, as critical public auditors have to evaluate how do govern...

Two models for slug tests conducted in unconfined aquifers are developed by (a) extending the unconfined KGS solution to oscillatory responses, yielding a model referred to herein as the unified model, and (b) replacing the constant head condition with the linearized kinematic condition at the water table. The models can be used to analyze the full range of responses from highly oscillatory to ...