Showing results for: groundwater sampling Articles
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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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Low Flow Groundwater Sampling Using RotaPump Inertial Lift Pump
This article tells you how to perform low flow groundwater sampling using a portable, surface-mounted pump with no decontamination required before each use and no chance of cross contamination between wells. An inertial lift pump moves a dedicated (stored in the well) pumping tube rapidly up and down. A one-way valve on the bottom admits water on the down stroke and retains water on the ...
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Fractured Bedrock Remediation - Case Study
ABSTRACT BOS 200® successfully remediates petroleum groundwater impacts in fractured bedrock at a former truck stop. Based on the post-injection groundwater results from the pilot test and full-scale injection, a No Further Action letter was issued in February 2015. CHALLENGES Over a period of 20 years, site investigation activities revealed a 320 foot (ft) long dissolved hydrocarbon plume ...
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Get high quality samples with your drive-point Piezometer
The results from short-term and long-term groundwater monitoring studies have shown that samples taken from Direct Push wells are comparable in quality to those obtained from conventional monitoring wells (ITRC, 2006). Solinst offers the Model 615 Drive-Point Piezometers that can be driven into suitable soils for groundwater sampling up to 20 to 25 ft. (6 – 7.5 m). High quality samples ...
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Integrated Nutrient Pollution Control Project - Case Study
Client Romanian Ministry of the Environment Project name Integrated Nutrient Pollution Control Project Country Romania Background and aim project Romania became a member of the European Union in January 2007. As a consequence, the Romanian Ministry of the Environment set up the Integrated Nutrient Pollution Control Project. The aim of this project is to help the Romanian government to ...
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Multilevel Groundwater Assessment of Confining Unit in a Bedrock Sequence near Sarnia, Ontario
Untitled Document INTRODUCTION Two sites in southern Ontario were studied through instrumentation of boreholes with Waterloo Multilevel Monitoring Systems. These sites are located approximately 7 km (4.3 miles) apart and lie between Sarnia to the northwest, and Petrolia to the east in lambton County, Ontario, Canada (figure 1). Multilevel monitoring devices were installed to ...
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QED pumps are the pumps of choice at North America’s largest landfill - Case Study
The Puente Hills Landfill in Los Angeles County, California, is the largest operating landfill in North America based on daily tonnage received. Located in an unincorporated area of Los Angeles County near Whittier, California, it is owned and operated by the Sanitation Districts of Los Angeles County. It has received approximately 118 million tons of solid waste as of April 2008, raising the ...
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Effective Groundwater Monitoring Using Dedicated Pumping Tubes
This article describes a groundwater monitoring procedure that does not require decontamination of pumping equipment, eliminates the chance of cross contamination between wells, and uses a surface pump. Two surface pumps are described, one for water level depths less than 25 feet and one for water level depths greater than 25 feet. Install Dedicated Pumping Tubes A dedicated pumping tube ...
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Rugged Pumps Survive at Puente Hills Landfill - Case Study
QED Pumps are the Pumps of Choice at North America's Largest Landfill The Puente Hills Landfill in Los Angeles County, California, is the largest operating landfill in North America based on daily tonnage received. Located in an unincorporated area of Los Angeles County near Whittier, California, it is owned and operated by the Sanitation Districts of Los Angeles County. It has received ...
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Multilevel Systems
Untitled Document Introduction A multilevel system is a groundwater monitoring device which allows the monitoring of a number of discrete groundwater zones within the subsurface. The system consists of packers and ports which are placed at varying locations along a casing string, effectively isolating and providing access to, each monitoring interval, see Figure 1. Due to ...
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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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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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