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Low-Flow Purging and Sampling (or
“Micropurge® sampling”) as a procedure for groundwater sampling has
gathered much momentum in Australia in recent years. It represents a
scientific-based approach to groundwater sampling that is used by hundreds
of groundwater professionals and is even written into guidelines by the
Victorian EPA.
Collecting a sample that is representative
of the natural formation, and not the water in the cased section, should
be the aim of every groundwater sampling program. With low-flow sampling,
samples represent formation water and naturally mobile contaminants, not
stagnant water in the well or mobilized contaminants.
EnviroEquip has been at the forefront on
supplying and renting groundwater sampling equipment since the early
1990s. Part of this has been educating people through training workshops
and seminars. Contact your local EnviroEquip office for equipment
advice on your next groundwater sampling event. EnviroEquip are your
Micropurge® experts. |
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"We’re detecting water
chemistry that we have never
measured
before with our
previous methods"
Mining Support Company,
Tasmania
"Using the
low-flow
groundwater sampling
procedure with a
bladder pump
led to
detection of VOCs at
levels that are very difficult
to achieve with other
sampling devices".
Groundwater consultant,
Newcastle
"Faced with a
daunting sampling
program for
the life of the mine,
Low-Flow was
the only cost-effective
solution
that could deliver low
running costs and consistent high-quality
groundwater
samples..."
Mine Environmental Officer,
NSW
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General
Information
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Micropurge Quipnotes - the
procedure & equipment summarised -
Download PDF
(546 kb)
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Low-Flow Information
Seminar Report - details from EnviroEquip's recent ground
water seminars including the presentation and referenced papers.
More...
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Dedicated Sampling
Guide - Download PDF
- (4MB)
Technical Papers,
Articles & Links
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US EPA Ground Water Issue -
Low-Flow (Minimal Drawdown)
Ground-water Sampling Procedures.
Download
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ASTM -Practice for Low-Flow
Purging and Sampling for Wells and Devices Used for Ground-Water Quality
Investigations -
www
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Ritchie, J, 2002. "Low-Flow Purging and Sampling Ground
Water - Evolution of Technology and Standards" ASTM Standardization News April
2002 pp. 18-23.
Download
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US EPA ETV Verification Statement QED Well Wizard -
August 2000.
Download
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Gray, S., S. Light and M.
Cloud, 1996. "Go
with the Low Flow". The Military Engineer, October - November 1996, pp.
580-581.
Download
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Powell, Robert M. and Robert W.
Puls, 1997.
“Hitting the Bull’s-Eye in Groundwater Sampling.” Pollution Engineering,
June 1997, pp. 50-54.
Download
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Puls, R.W. and M.J. Barcelona,
1989. “Ground
Water Sampling for Metal Analyses” U.S. EPA, Ground Water Issue,
Publication Number EPA/540/4-89/001, March 1989.
Download
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QED Environmental Systems web site www
EnviroEquip Product
Links
Training Workshops
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