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Groundwater Sampling System Articles & Analysis
14 articles found
As autumn arrives, shorter days and cooler weather bring not only colorful foliage but also shifts in water quality and environmental conditions. Seasonal changes can affect runoff, groundwater, and surface water supplies, making environmental sampling and water filtration more important than ever. Behind the scenes, advanced materials like fluoropolymers play a key role in ensuring accurate, ...
The Army Corps ESTCP study is the most extensive 3rd-Party evaluation of the Snap Sampler method completed to date. There are 5 complete reports and several presentations included here for free download. A Fact Sheet explaining results in a short synopsis is included ...
Leading environmental sampling equipment manufacturer QED Environmental Systems has announced the launch of a new customer portal for its BIOGAS 3000 and BIOMETHANE 3000 analysers. ...
Parsons Engineering Science, Inc. (Parsons ES) was retained by the US Air Force Center for Environmental Excellence Technology Transfer Division (AFCEE/ERT) to perform an evaluation of passive groundwater diffusion sampling technology. The diffusion sampler evaluation was funded under Contract F11623-94-D0024, Delivery Order RL72, as part of the AFCEE/ERT Remedial Process Optimization (RPO) ...
This report describes the activities and results of a field demonstration of six different diffusion and grab groundwater sampling devices at the former McClellan Air Force Base (McClellan), located in Sacramento, California. Analytical results from these samplers are compared to ‘baseline’ analytical results from samples collected using conventional (low-flow and three-casing-volume purge) ...
Field trials of a new commercially available diffusive ground-water sampling device were conducted at two industrial properties in the Blue Ridge Province of North Carolina. The test sites have extensive monitoring well networks and more than five years of historical water quality data. Volatile organic compounds (VOCs) including purgeable aromatics (petroleum hydrocarbons) and halogens ...
INTRODUCTION In recent years, there have been significant advances in the development of groundwater sampling systems. Most notable are those sampling systems that enable the collection of multiple depth-discrete groundwater samples from a single monitoring well. Prior to the ...
Ground water is often sampled to determine its water chemistry, to see if the water is acceptable for human consumption, or to sec if industrial activity may have caused contamination. Sampling ground water from monitoring wells has traditionally involved "purging" the well to remove stagnant water that may not be representative of in situ ground water quality. Regulatory guidance often ...
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 ...
Many commonly used groundwater sampling techniques and procedures have resulted from methods developed for water supply investigations. ...
The objective is to pump in a manner that minimizes stress (drawdown) to the system to the extent practical taking into account established site sampling objectives. ...
A commonly referenced paper concerning the effect of tubing materials on sample quality is 'Sample Tubing Effect on Groundwater Samples' by M.J. ...
The small diameter tube design of the system reduces purge volumes and lag time effects, making it very applicable for monitoring and sampling in low hydraulic conductivity formations. ...
The Regional Superfund Ground Water Forum is a group of ground-water scientists, representing EPA’s Regional Superfund Offices, organized to exchange up-to-date information related to ground-water remediation at Superfund sites. Filtration of ground-water samples for metals analysis is an issue identified by the Forum as a concern of Superfund decisionmakers. Inconsistency in EPA Superfund ...