Results 141 to 150 of about 78,232 (292)

Cromwell Terrace aquifer study

open access: yes, 2012
Background: The Otago Regional Council (ORC) is responsible for managing Otago’s groundwater and surface water resources. Before this study ORC hadn’t investigated how much groundwater resource there was under the terraces surrounding Cromwell.
Rekker, J
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Demonstration of a High‐Resolution Passive Profiler for Characterizing the Distribution of PFAS in Groundwater: A Comparison of Methods in the Field

open access: yesGroundwater Monitoring &Remediation, EarlyView.
Abstract Characterizing the concentration and mass flux spatial distributions at sites with complex hydrogeologic conditions is critical to evaluate the fate and transport of contaminants, as well as to design effective remediation programs. PFAS (per‐ and polyfluoroalkyl substances)‐contaminated sites are even more complex due to the large number of ...
Morgan Eldridge   +8 more
wiley   +1 more source

In Situ Colloidal Activated Carbon for PFAS Remediation in Groundwater: Principles, Performance Expectations, and Lessons from the First Decade

open access: yesGroundwater Monitoring &Remediation, EarlyView.
Abstract Injectable colloidal activated carbon (CAC) has been commercially used to remediate per and polyfluoroalkyl substances (PFAS) in groundwater since 2016. The basis of the technology is enhanced PFAS retention within the aquifer from engineered increases in aquifer‐matrix sorptivity (“PFAS enhanced retention”), with re‐equilibration from the ...
Jeremy Birnstingl
wiley   +1 more source

Reconnaissance‐Scale Methods for the Identification of Groundwater Discharge to Streams

open access: yesGroundwater Monitoring &Remediation, EarlyView.
Abstract Identifying groundwater discharge locations is critical for understanding and monitoring groundwater contributions to streams in terms of water quantity and quality. Streams and rivers are under increasing strain from factors, including increased urbanization, agricultural land use, groundwater extraction, and climate change, which can alter ...
Corey M. Zanatta   +2 more
wiley   +1 more source

Going, Going, Almost Gone: How the Depletion of the Alluvial Aquifer Will Affect Cropping Decisions in the Arkansas Delta

open access: yes
The U.S. Geological Survey (USGS) has determined that agricultural irrigation in Arkansas’ Delta is unsustainable with significant negative economic repercussions on producers net returns affected by the Alluvial aquifer.
Popp, Michael P.   +2 more
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A description of aquifer units in eastern Oregon

open access: yes, 1985
Report -- Plate 1. Aquifer units in eastern Oregon -- Plate 2. Geologic cross sections of aquifer units in eastern Oregon -- Plate 3. Ground-water-level contours and distribution of irrigation, industrial, and public supply wei Is in eastern Oregon ...

core  

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