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Slug Testing Articles & Analysis
13 articles found
Overview Wesleyan hydrology students used the Level TROLL 700 to monitor groundwater levels and perform slug tests to understand how climate change may impact aquifer recharge in the northeastern U.S. ...
Investigation of an industrial dry cleaners near Philadelphia, Pennsylvania found concentrations of breakdown products of PCE in the soil and ground water. The parent PCE presumably was reductively dechlorinated to TCE, DCE and vinyl chloride. However, since the daughter products DCE and vinyl chloride are more readily degraded under aerobic conditions, the breakdown was incomplete and natural ...
” Mr Smith discusses the challenges that the industry faces in finding the right solution to increasing slug numbers. “I recognise that these are testing times for everyone and margins are tight, but the industry continues to evolve and change, and because of this we need to be open to changing the way we do things. ...
The slug test is still one of the simplest and cost-effective methods to interpret the hydraulic parameters for aquifer analysis. ...
They can be used to make predictions and to test hypotheses. The thermal models that we customize and construct in house at TerraTherm are a type of numerical model that implement a series of equations to simulate the physics of energy and water transfer in the subsurface during a thermal remediation project. ...
A semianalytical model of partially penetrating, overdamped slug tests achieves this objective. The short term solution is an existing fully penetrating model, the long term solution is the polar residue of an inverse Laplace transform, and an exponential spline function patches the solutions together. Large amplitude slug test ...
Both of these sensors collect data in linear, linear average, or event logging modes, and are mostly used for long-term monitoring or slow-responding slug tests. The Level TROLL 700 is the Cadillac of the Level TROLL line. ...
The objectives of this study were to determine the biodegradability of ozone-solubilized endogenous residue, the action of ozone on the active biomass and the solubilization yield of these two main sludge fractions. Batch tests were conducted with slug input of ozone stock solution into fresh or aerobically digested synthetic sludge. ...
The investigation was performed during the third year of operation and included: (1) groundwater sampling and analysis for chlorinated solvents, dissolved CH4, dissolved H2 and major inorganic constituents; (2) Fe0 core sampling and analysis by SEM-EDS, XRD, and FTIR spectroscopy for the organic fraction; (3) in situ permeability tests and flow field monitoring by water level ...
Hydraulic parameters of the aquifer (K^lO^ms-1) and overlying clay aquitard (Kal0_8ms_') were determined using grain size, permeameter and slug test analyses; when coupled with observed gradients, they indicate a net groundwater flow velocity of 0.04-0.4 ma-1 downward through the clay and 1-13 ma ' horizontally within the sand aquifer, producing aquifer residence ...
Initially, multilevel systems were created to allow delineation of contaminated groundwater in fractured bedrock (Cherry and Johnson, 1982) with the earliest systems designed for sample collection rather than full scale monitoring, including sampling, level measurements and permeability testing. Prior to advancements in multilevel instrument design this detailed monitoring was ...
A double-packer system was used to characterise the aquifer hydraulic properties (transmissivity, storativity, hydraulic gradient), with a test-zone (inter-packer) spacing of 1 m for tests in the plume and 2 m below the inferred base of the plume. ...
Effective porosity is usually assumed based on ranges of values cited in scientific literature or estimated from pumping tests. Hydraulic conductivity is usually estimated from slug tests or pumping tests. ...