bladder pump Articles
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Decontaminating Groundwater Sampling Devices
These studies are the second part of a two year project that examines decontaminating groundwater sampling devices. In the first year, the efficiency of various decontamination protocols was tested using small test pieces of materials that are commonly used in groundwater sampling devices. Those tests showed that a hot detergent wash and rinse followed by hot air drying (105°C) was the most ...
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Norfolk County Council tackle groundwater contamination with low-flow - Case Study
Geotech low flow groundwater analysis equipment has enabled quick and easy access to samples at 2m intervals down a 28m screen in deep boreholes. Elizabeth Guilford of Norfolk County Council hired the low flow kit from Geotech and used it on a Norfolk CC landfill where leachate contamination of groundwater was suspected. Samples taken at 2m intervals close to elevation of the suspected ...
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Norfolk CC tackle groundwater contamination with low-flow
Quick and easy access in deep wells Geotech low flow groundwater analysis equipment has enabled quick and easy access to samples at 2m intervals down a 28m screen in deep boreholes. Elizabeth Guilford of Norfolk County Council hired the low flow kit from Geotech and used it on a Norfolk CC landfill where leachate contamination of groundwater was suspected. Samples taken at 2m intervals close to ...
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A method for reducing purge volumes in deep monitoring wells: a purging experiment.
Regulatory agencies often require three well casing volumes or more be purged prior to collection of groundwater samples for chemical analysis. Costs are high for testing and disposing of potentially hazardous purge water; therefore, efforts must be made to minimize waste-water volume while obtaining representative groundwater samples. Lockheed sponsored a purge experiment on two deep monitor ...
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Leaks and spills - LNAP and DNAPL detection and clean up
Any tank can leak. Most leaks can be cleaned up and responsible operators need equipment that does what’s needed. With an ATEX Zone 0 certified interface meter site operators can successfully achieve LNAP and DNAPL detection when monitoring petrochemical sites, tank farms, petrol station forecourts, landfills or remediation sites. If site technicians detect leaked product with an interface ...
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Evaluation of Sampling and Field-Filtration Methods for the Analysis of Trace Metals in Ground Water
Selected ground water sampling and field-filtration methods were evaluated to determine their effects on field parameters and trace metal concentrations in samples collected under several types of field conditions. The study focused on conditions where traditional approaches may produce turbid samples, which often leads to filtration of suspended particles from the sample before laboratory ...
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Groundwater Monitoring with the Waterra Inertial Pump
Untitled Document Abstract The Waterra Inertial Pump has been available for use in narrow diameter monitoring wells for several years. This device offers many advantages over other types of sampling equipment. Since this pump operates via a principle not used by any other type of device and is commonly constructed of materials not widely used in field sampling, some ...
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Performance Testing of Conventional and Innovative Downhole Samplers and Pumps for VOC`s in a Laboratory Monitoring Well
Untitled Document ABSTRACT Concentrations of groundwater contaminants in samples that differ from concentrations in the aquifer can lead to incorrect conclusions about the extent and severity of contamination and the effectiveness of remedial measures. Sample collection and storage techniques affect measured concentrations in samples, particularly of organic compounds that ...
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Performance Testing of Conventional and Innovative Downhole Samplers and Pumps for VOC`s in a Laboratory Monitoring Well
Untitled Document ABSTRACT Concentrations of groundwater contaminants in samples that differ from concentrations in the aquifer can lead to incorrect conclusions about the extent and severity of contamination and the effectiveness of remedial measures. Sample collection and storage techniques affect measured concentrations in samples, particularly of organic compounds that ...
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4 ways to perform a joint test: A how-to guide
Last month we discussed why consistent joint testing is a crucial and often overlooked step. This month, let's get practical and outline some common ways you can joint test, break down the benefits and drawbacks of each, and summarize the steps involved. [LINK] To start, there are essentially 4 different ways to joint test. Hydrostatic Testing Internal Joint Testing Traditional External ...
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Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures
Untitled Document Background The Regional Superfund Ground Water Forum is a group of ground-water scientists, representing EPA's Regional Superfund Offices, organized to exchange information related to ground-water remediation at Superfund sites. One of the major concerns of the Forum is the sampling of ground water to support site assessment and remedial performance ...
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