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Groundwater Hydrology
Lectures Summary - Apr 2008
Thank you to all those who attended their local Groundwater Hydrology
Lecture during April.
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Geoprobe Soil Vapour Implants -
Apr
2008
Geoprobe permanant implants can be used for soil vapour sampling,
groundwater sampling or air sparging to shallow depths and you don’t
necessarily need a drill rig to install...
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Submersible Pump Guide - Mar
2008
An interactive pump selection guide that allows you to compare three types
of pumps commonly used for landfill leachate and condensate pumping, and
for remediation sites.
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Case Study - Landfill Gas Well Dewatering - Mar 2008
Article by QED Environmental Systems on how Autopumps lowered liquid
levels in landfill gas extraction wells
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The Monitoring of Landfill Gas - Nov 2007
Article from Roger Riley, NPI Manager, Geotechnical Instruments
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In-Situ Product Updates – Aug 2007
New features for LevelTROLLs and new communication cables
- ORP, Eh, SHE? I'm
confused! - Updated July 2007
What is ORP, how is it measured, and what is ORP, Eh and SHE?
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Acquisition Announcement -
April 07
We are pleased to announce that in January of this year EnviroEquip
accepted an offer from Biolab (Aust) Pty Ltd, a division of Alesco
Corporation, to purchase our business.
- PID Correction
Factors, Ionization Energies, and Calibration Characteristics -
Jul 05
"Can I detect TCE with a 10.6eV
lamp, or do I need an 11.7eV lamp?" "What method is best for
calibrating a PID?"
Questions such as these are answered in our
most requested technical document.
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Workhorse for
Tough Environments
- Jul 05
After a dream run in its Californian trials, QED’s new air-driven piston
pump has arrived in Australia.
- Digital
Detection of Wastewater in Stormwater - Jul 05
This paper was written by the South Gippsland Shire Council, and published
in "Environmental Health" Vol.5 No.1 2005. In the paper the
predecessor to the LevelTroll, the
MiniTroll was used obtain the crucial data for this study.
- Pump
Placement for Low Flow Sampling
- Oct 03
Pump placement is often an issue when changing to Low Flow Sampling from
traditional purging; concern is that samples will come from a narrow zone
within the well screen, possibly missing contamination above or below the
pump intake. However this is not the case!
Read on...
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Preferred Installers for Remediation Equipment - August 2003
EnviroEquip is excited to offer improved
installation services through our association with Austech Petroleum
Services and the JFT Group of Companies.
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Measuring trichloroethylene with PIDs - May 2003
Can I measure trichloroethylene with a standard 10.6 eV PID lamp?
- Measuring
diesel fuel or kerosene with PIDs - May 2003
Can I use a PID to measure diesel fuel or kerosene?
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Options for Sampling Very Low Yield Monitoring Wells - May 2003
Obtaining samples from wells set in low hydraulic conductivity formations
is a challenge.
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Groundwater Monitoring Gets a Direct Push! - March 2003
So, why is groundwater monitoring important you ask? And what does 'direct
push' have to do with it? And for that matter, what is 'direct push'?
- How to
prevent humidity condensation on your PID sensor - Dec 2002
Great advice for PID users
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Performance Comparison: Direct-Push Wells Versus Drilled Wells
- May 2002
A large-scale U.S. Navy sponsored performance comparison was conducted at a major MTBE cleanup site in Port Hueneme, California. The study found almost no difference between samples collected from small diameter direct push wells and those collected from conventional drilled wells.
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Use
of PIDs for Soil Headspace Measurements - May 2002
A guide to using PIDs for sampling organics from potentially
contaminated soils.
- Introduction to Bailers
- August 2001
A brief introduction to bailers and their application in groundwater sampling.
- VOC Sampling with
bailers - August 2001
How to obtain a sample with VOCs into a Voss Disposable Bailer.
- Hydrocarbon Recovery Factors...What to Consider
- May 2001
Current risk-based practices in groundwater remediation often target the removal of floating hydrocarbon layers without the removal of water.
- Low-Flow (Minimal Drawdown)
Ground Water Sampling Procedures - December 1999
This paper from the United States Environmental
Protection Agency is widely respected as a resource for persons who need or wish to use
Low-Flow purging and sampling as a method of sampling the groundwater at their site.
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Low Flow
Sampling by J.Ritchie (319kb) - November 2002
- The
Why's, What's & Hows of Micropurge Sampling (843kb)
- October 2001
Explains the benefits of low-flow sampling versus traditional methods
such as bailers
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Micropurge
Sampling, Long & Sort Term Strategies (1.66Mb) - October
2001
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Portable
Groundwater Pumps (755kb) - October 2000
A Complete Guide on Portable Groundwater Pumps for Sampling and Purging Bores to 50 m using only your 12 Volt Battery
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