aquifer Articles | Environmental XPRT

Beaver Dam Groundwater Survey Project, Utah - Case Study

In May 2014, we conducted seismoelectric survey for Willowstick Technologies LLC in Beaver Dam area, Utah, USA. According to our client’s requirement, we designed 3 seismoelectric survey lines, with total 50 measurement stations. After data processing and interpretation, we located 3 layers of aquifers. The red layers are the top and bottom of the first aquifer; the green ones for the ...

May 26, 2016

By Seismo Electronic LLC.

Aquifer Storage and Recovery (ASR) at Denver Water - Case Study

Motivation Denver Water required high resolution information on aquifer properties beneath the city of Denver to support planning for future aquifer storage and recovery operations. Project consultant Leonard Rice Associates recommended NMR logging as a low cost and high resolution methodology and selected the Vista Clara Javelin NMR logging tool for the ...

Mar. 16, 2021

By Vista Clara, Inc

Assessing transmissivity from specific capacity in an alluvial aquifer in the middle Venetian plain (NE Italy)

Defining aquifer permeability distribution accurately over large areas is often debated in hydrogeology. The operational efforts to calculate hydraulic conductivity with classical aquifer tests are significant; however, accurate knowledge of permeability areal distribution is fundamental both from a hydrogeological and a modeling standpoint. This paper presents an empirical relationship between ...

May 9, 2013

By IWA Publishing

Estimation of baseflow recession constants and effective hydraulic parameters in the karst basins of southwest China

By analysing the hydrographs of karst basin outflow, it is possible to identify aquifer characteristics and, accordingly, the main features of a karst basin. In this study, 19 basins with daily observed flow discharges during drought periods between October and April 1973–1983 were selected to analyse the master recession curve (MRC). During a drought period, the MRCs were separated into segments ...

Jan. 1, 2012

By IWA Publishing

pH and redox buffering systems of landfill leachate contaminated aquifer materials

Introduction of landfill leachate into an aerobic aquifer leads to a variety of redox and pH buffering reactions between dissolved chemical species and aquifer sediments, which play profound effects on the behaviours of contaminants beneath and down gradient from the landfill. The specific objective of this study was to determine the spatial and temporal variations of pH and redox buffering ...

Jun. 24, 2013

By Inderscience Publishers

Combining economic policy instruments with desalinisation to reduce overdraft in the Spanish Alto Guadalentín aquifer

This paper analyses the cost-effectiveness of combining several economic policy instruments to address the problem of non-renewable pumping in the Alto Guadalentín aquifer in southeastern Spain, one of the most extreme cases of aquifer depletion in Europe. Our results show that all instruments have significant economic impacts. However, the future availability of desalinisation would notably ...

Dec. 5, 2016

By IWA Publishing

LIEUVIN, France: Ecoskid–Elimination of turbidity and microbiological retention

The Saint Aubin de Scellon borehole is subject to large variations in turbidity in rainy periods (karstic aquifer).So Ultrafiltration was chosen for this site to eliminate these peaks in turbidity.The 75 m3/h Ultrafiltration unit will be extendable to 150 ...

Feb. 15, 2008

By Degremont Technologies - a subsidiary of Suez Environnement

Interconnectivity between the Superficial Aquifer and the Deep Confined Aquifers of the Gnangara Mound, Western Australia

Perth groundwater resources are obtained from three major aquifers that occur beneath the Perth metropolitan area: the Superficial aquifer, Leederville aquifer and Yarragadee aquifer. Each aquifer has a unique seasonal water level pattern controlled by soils, geomorphology and geology. Landuse is mainly responsible for variations in recharge; however, the hydraulic properties control aquifer ...

Jan. 1, 2005

By Springer-Verlag GmbH

Interconnectivity between the Superficial Aquifer and the Deep Confined Aquifers of the Gnangara Mound, Western Australia

Perth groundwater resources are obtained from three major aquifers that occur beneath the Perth metropolitan area: the Superficial aquifer, Leederville aquifer and Yarragadee aquifer. Each aquifer has a unique seasonal water level pattern controlled by soils, geomorphology and geology. Landuse is mainly responsible for variations in recharge; however, the hydraulic properties control aquifer ...

Feb. 1, 2005

By Springer-Verlag GmbH

Evaluating farmers' preferences for wastewater: quantity and quality aspects

This paper employs the Contingent Valuation (CV) method to investigate farmers' willingness to adopt a new water resource, namely treated wastewater, and to estimate their Willingness To Pay (WTP) for varying quantities and qualities of treated wastewater for irrigation. A pilot CV study is undertaken with 97 farmers located around Cyprus' Akrotiri aquifer, a common-pool water resource with ...

May 6, 2008

By Inderscience Publishers

Numerical evaluation of pumping well transmissivity estimates in laterally heterogeneous formations

Transmissivity estimates derived from non-steady-state, single well, constant discharge, aquifer tests in laterally heterogeneous environments generally are questioned relative to their representativeness of aquifer conditions. Drawdown in pumping wells reflects the removal of water from storage in the aquifer and transient refraction of groundwater path-lines during the evolution of a ...

Jan. 1, 2006

By Springer-Verlag GmbH

Surrogate-based pumping optimization of coastal aquifers under limited computational budgets

The computationally expensive variable density and salt transport numerical models hinder the implementation of simulation-optimization routines for coastal aquifer management. To reduce the computational cost, surrogate models have been utilized in pumping optimization of coastal aquifers. However, it has not been previously addressed whether surrogate modelling is effective given a limited ...

Oct. 12, 2017

By IWA Publishing

Study of the 2–D copper transport in sandy soil by laboratory scale aquifer model (sand tank) experiment

In this study, a laboratory scale aquifer model (sand tank) experiment has been carried out to simulate the 2–D transport pattern of copper into the sandy soil. The data collected from the experiment was used for verification of this physical transport experiment by using a flow and transport simulation software (MODFOLW). In case of simulation of laboratory scale aquifer model experiment ...

Jul. 24, 2013

By Inderscience Publishers

BOCQUENCE, France: Ecoskid–Elimination of turbidity, iron and microbiological retention

The resource consists of two boreholes, about 45 m deep, capturing a karstic aquifer (Cenomasian chalk).Because of the spot opening of swallets and the presence of iron, water from the boreholes is temporarily unfit for ...

Feb. 15, 2008

By Degremont Technologies - a subsidiary of Suez Environnement

Mineralisation exploration case study

This resistivity survey aimed to locate a potential mineral deposit, five lines of surface-resistivity surveys were taken in the field. In accordance to the inversion sections below, the blue areas circled in red show lows resistivity and were concluded to have mineral deposits. This result concurred with initial site investigation, where orebody outcrops were found. Other low resistivity areas ...

Jul. 8, 2013

By ZZ Resistivity Imaging Pty. Ltd.

Coastal aquifer hydrodynamics and salinity in response to the tide: case study in Lisbon, Portugal

The variability in dynamics and salinity of the coastal alluvial aquifer on which the city of Lisbon is located was evaluated. The evaluation was based on the analysis of level and groundwater electrical conductivity fluctuations depending on the tide in the Tagus River. The results obtained made it possible to recognize three sectors. First, a littoral sector where the variations in level ...

Feb. 19, 2016

By IWA Publishing

Case Study - Monitoring Natural Attenuation - Catalonia, Spain

Researchers at Universitat de Barcelona and University of Waterloo made use of EnviroInsite's advanced data visualization capabilities to contour hot-spots of TCE contamination and carbon isotopes. The results from multi-level sampling devices were then shown on a x-section to illustrate the loss of PCE in the direction of flow and variability of PCE and TCE isotopes vertically across the ...

May 19, 2016

By EI LLC

Pathogen inactivation during passage of stormwater through a constructed reedbed and aquifer transfer, storage and recovery

A study was undertaken to determine the potential inactivation rates of selected enteric microorganisms in captured urban stormwater within a constructed reedbed and in tertiary carbonated aquifer during an Aquifer Storage, Transfer and Recovery (ASTR) scheme. The study was undertaken in-situ in the constructed reedbed and aquifer using diffusion chambers. The results showed that all tested ...

Sep. 1, 2010

By IWA Publishing

Riverbank filtration and managed aquifer recharge as alternative water supply technologies for India: strengths–weaknesses–opportunities–threats analysis

As part of the Saph Pani project, a rapid assessment of a riverbank filtration site in Haridwar and data from literature on riverbank filtration and managed aquifer recharge in India are used for a strengths–weaknesses–opportunities–threats (SWOT) analysis based on environmental, social, institutional and economic aspects. Both technologies show a high potential for future ...

Aug. 6, 2014

By IWA Publishing

Questioning the applicability of the areal leakage factor as a constant hydro-geological parameter

The differential equation of the flow through a leaky aquifer considers the leakage factor a constant hydro-geological parameter. The purpose of this research paper is to examine the suitability of this constant for the simulation of the distribution of the piezometric heads through leaky aquifers. To perform this task, a proposed explicit finite difference scheme for the determination of the ...

Dec. 22, 2014

By Inderscience Publishers