This document summarizes Vikas Tandon's hydrogeology modeling qualifications and expertise at Shaw Environmental & Infrastructure Group. It outlines his PhD in hydrogeology, 14 years of experience, and leadership roles. It then describes Shaw's modeling capabilities and applications in areas like groundwater flow analysis, contaminant fate and transport modeling, dewatering design, and modeling of plant discharges to surface water. Example projects are provided and uncertainties in modeling are discussed. The document promotes Shaw's modeling services for evaluating complex environmental problems.
Upstream Suburban Philadelphia Sub-Watershed Cluster Modeling OverviewKim Beidler
Upstream Suburban Philadelphia Sub-Watershed Cluster Modeling Overview by Jeffrey Featherstone, Ph.D., Director, Center for Sustainable Communities, Temple University
Presented by Charlotte MacAlister, Birhanu Zemadim, Teklu Erkossa, Amare Haileslassie, Dan Fuka, Tammo Steenhuis, Solomon Seyoum, Holger Hoff, Kinde Getnet, and Nancy Johnson to the Nile Basin Development ChallengeScience and Reflection Workshop, Addis Ababa, 4-6 May 2011
February 2022 TAGD Business Meeting
Study Results: Delineating Injection Well Buffer Zones in Brackish Aquifers
Juan Acevedo, BRACS Hydrologist, TWDB Jack Sharp, Professor Emeritus in Geology, UT- Austin
Cost (& Time) Optimization of Hydrogeological StudiesGidahatari Agua
Cost optimization has to identify the most common problems to the hydrogeological investigation as travel time and transport issues, seasonal restrictions, personal availability, protocols, etc. This post is focused on strategies and best practices for cost (& time) optimization, specially for hydrogeological investigation on mining projects.
Upstream Suburban Philadelphia Sub-Watershed Cluster Modeling OverviewKim Beidler
Upstream Suburban Philadelphia Sub-Watershed Cluster Modeling Overview by Jeffrey Featherstone, Ph.D., Director, Center for Sustainable Communities, Temple University
Presented by Charlotte MacAlister, Birhanu Zemadim, Teklu Erkossa, Amare Haileslassie, Dan Fuka, Tammo Steenhuis, Solomon Seyoum, Holger Hoff, Kinde Getnet, and Nancy Johnson to the Nile Basin Development ChallengeScience and Reflection Workshop, Addis Ababa, 4-6 May 2011
February 2022 TAGD Business Meeting
Study Results: Delineating Injection Well Buffer Zones in Brackish Aquifers
Juan Acevedo, BRACS Hydrologist, TWDB Jack Sharp, Professor Emeritus in Geology, UT- Austin
Cost (& Time) Optimization of Hydrogeological StudiesGidahatari Agua
Cost optimization has to identify the most common problems to the hydrogeological investigation as travel time and transport issues, seasonal restrictions, personal availability, protocols, etc. This post is focused on strategies and best practices for cost (& time) optimization, specially for hydrogeological investigation on mining projects.
Catchment Water Quality Management | eWater.com.aueWater
Source Catchments is a water quality and quantity modelling framework that supports decision making and a whole-of-catchment modelling approach. It is designed to help natural resource managers and consultants develop targets, prioritize improvement programs and measure the effectiveness of a broad range of catchment management activities.
The software provides a framework for modelling the amounts of water and contaminants flowing though a catchment and into major rivers, wetlands, lakes, or estuaries. Source Catchments integrates an array of models, data, and knowledge that can be used to simulate how climate and catchment variables (like rainfall, evaporation, land use, vegetation) affect runoff, sediment and contaminants.
Visit http://www.eWater.com.au for more information
Nonpoint source monitoring and sampling systems, Stormwater magazine, by Don Talend, brand storytelling, content management and demand generation expert. Water engineering industry
Preliminary Technical Evaluation of Three Reports by U.S. Environmental Prote...LPE Learning Center
http://www.extension.org/72802 The Yakima Valley is a large agricultural area where there are multiple potential sources of nitrate in groundwater. Potential sources are intermingled, i.e., homes with septic systems are on the same properties as the dairies or adjacent to farms and/or dairies. In 2012, Region 10 of the US Environmental Protection Agency undertook a study to source track and identify nitrogen sources in the Yakima River Basin as part of an enforcement effort focusing on dairies. EPA position was that the targeted dairies did not properly apply nutrients to land application fields at agronomic rates, resulting in groundwater contamination. The study area is underlain by 3 aquifers, a shallow perched aquifer likely related to irrigation return flows, an alluvial aquifer and an underlying basalt aquifer. The three aquifers are hydrologically connected either through natural pathways or through wells completed into more than one aquifer. Because none of the potential sources are isolated, source tracking requires an in-depth knowledge of aquifer properties such as aquifer thickness, groundwater flow direction, hydraulic conductivity, and vertical leakance in addition to understanding localized effects of ditches, drains and production wells on groundwater flow. EPA focused on groundwater chemistry, assuming that indicators such as pesticides and other trace organic compounds would tie the groundwater nitrate to a specific source. EPA’s study failed to yield clear indicators pointing to specific sources and did not collect hydrologic data for its 2012 report to gain a detailed understanding of aquifer properties. This presentation will address how to accurately characterize the hydrogeology below dairy production areas and land application fields, and how to proactively manage nutrients to protect dairies from unsubstantiated enforcement actions.
The Texas A&M Transportation Institute’s (TTI) Sediment and
Erosion Control Laboratory (SEC Lab) provides the transportation industry with a research and performance
evaluation program for roadside environmental management. Research at the SEC Lab includes stormwater quality improvement, erosion and sediment control, and vegetation
establishment and management.
Civic Problems and Solutions for Perambalur Town, TN, IndiaRajaram T
contains suggestions for solving civic problems in Perambalur. The District Collector (Dr. Darez Ahamed) has already asked the civic officials to act on most of them. This is being shared to invite comments and solicit co-operation from residents for effective implementation
Suitability Assessment of Shallow Groundwater of a Typical Coastal Aquifers f...iosrjce
Shallow Groundwater of a coastal aquifer has been intensively used as a source of water for
irrigation farming in the Niger Delta region of Nigeria. To assess the usability of this water for irrigation use,
twenty locations at buguma city were mapped out and five water wells were sampled for each location using
Simple random sampling technique. Each sample was analyzed for the cations(magnesium(Mg2+), sodium(Na+
),
potassium(K+
),calcium(Ca2+)),anion(nitrate ion(N03
-
)), trace elements(cadmium(Cd), iron(Fe), and zinc(Zn)and
other phsico-chemical parameters(Salinity(SI), electric conductivity(EC) and pH) adopting standard methods.
Based on the analyzed parameters, irrigation water quality parameters (RSC, SAR, %Na and %MR) and
indexes(Kelly index(KI), Permeability Index(PI) and the Canadian water quality index(CWQI)) were calculated
.To assess the usability of the shallow groundwater, results of the Water quality index models and other
calculated irrigation parameters were compared with the standards. On the average, virtually all the sampling
locations except Ombu, Igba and Jackreech were unsuitable for irrigation use.
Hydrological Calibration in the Mount Lofty Ranges using Source Paramenter Es...eWater
The catchments of the Mount Lofty Ranges (MLR) provide a crucial water resource for the rural and urban community of Adelaide. The Source Catchments model is one planning tool used to assess current and future water, sediment and nutrient yields from the catchment. The modelling is critical for future planning to ensure a safe and reliable water supply is maintained.
Linking PEST and Source Catchments for hydrology calibration was an efficient and repeatable method for calibration. Future work to improve the process could include calibrating with other rainfall runoff models such as Sacramento which better account for groundwater losses or explicit representation of groundwater in the model.
This project has focused solely on rainfall and runoff. It has not considered how external impacts (e.g. climate change) may change catchment hydrological characteristics or constituent characteristics such as EMC/DWC values. Future projects through the Goyder Water Research Institute aim to address some of these
issues. This project may produce data which will inform further work in this respect.
Catchment Water Quality Management | eWater.com.aueWater
Source Catchments is a water quality and quantity modelling framework that supports decision making and a whole-of-catchment modelling approach. It is designed to help natural resource managers and consultants develop targets, prioritize improvement programs and measure the effectiveness of a broad range of catchment management activities.
The software provides a framework for modelling the amounts of water and contaminants flowing though a catchment and into major rivers, wetlands, lakes, or estuaries. Source Catchments integrates an array of models, data, and knowledge that can be used to simulate how climate and catchment variables (like rainfall, evaporation, land use, vegetation) affect runoff, sediment and contaminants.
Visit http://www.eWater.com.au for more information
Nonpoint source monitoring and sampling systems, Stormwater magazine, by Don Talend, brand storytelling, content management and demand generation expert. Water engineering industry
Preliminary Technical Evaluation of Three Reports by U.S. Environmental Prote...LPE Learning Center
http://www.extension.org/72802 The Yakima Valley is a large agricultural area where there are multiple potential sources of nitrate in groundwater. Potential sources are intermingled, i.e., homes with septic systems are on the same properties as the dairies or adjacent to farms and/or dairies. In 2012, Region 10 of the US Environmental Protection Agency undertook a study to source track and identify nitrogen sources in the Yakima River Basin as part of an enforcement effort focusing on dairies. EPA position was that the targeted dairies did not properly apply nutrients to land application fields at agronomic rates, resulting in groundwater contamination. The study area is underlain by 3 aquifers, a shallow perched aquifer likely related to irrigation return flows, an alluvial aquifer and an underlying basalt aquifer. The three aquifers are hydrologically connected either through natural pathways or through wells completed into more than one aquifer. Because none of the potential sources are isolated, source tracking requires an in-depth knowledge of aquifer properties such as aquifer thickness, groundwater flow direction, hydraulic conductivity, and vertical leakance in addition to understanding localized effects of ditches, drains and production wells on groundwater flow. EPA focused on groundwater chemistry, assuming that indicators such as pesticides and other trace organic compounds would tie the groundwater nitrate to a specific source. EPA’s study failed to yield clear indicators pointing to specific sources and did not collect hydrologic data for its 2012 report to gain a detailed understanding of aquifer properties. This presentation will address how to accurately characterize the hydrogeology below dairy production areas and land application fields, and how to proactively manage nutrients to protect dairies from unsubstantiated enforcement actions.
The Texas A&M Transportation Institute’s (TTI) Sediment and
Erosion Control Laboratory (SEC Lab) provides the transportation industry with a research and performance
evaluation program for roadside environmental management. Research at the SEC Lab includes stormwater quality improvement, erosion and sediment control, and vegetation
establishment and management.
Civic Problems and Solutions for Perambalur Town, TN, IndiaRajaram T
contains suggestions for solving civic problems in Perambalur. The District Collector (Dr. Darez Ahamed) has already asked the civic officials to act on most of them. This is being shared to invite comments and solicit co-operation from residents for effective implementation
Suitability Assessment of Shallow Groundwater of a Typical Coastal Aquifers f...iosrjce
Shallow Groundwater of a coastal aquifer has been intensively used as a source of water for
irrigation farming in the Niger Delta region of Nigeria. To assess the usability of this water for irrigation use,
twenty locations at buguma city were mapped out and five water wells were sampled for each location using
Simple random sampling technique. Each sample was analyzed for the cations(magnesium(Mg2+), sodium(Na+
),
potassium(K+
),calcium(Ca2+)),anion(nitrate ion(N03
-
)), trace elements(cadmium(Cd), iron(Fe), and zinc(Zn)and
other phsico-chemical parameters(Salinity(SI), electric conductivity(EC) and pH) adopting standard methods.
Based on the analyzed parameters, irrigation water quality parameters (RSC, SAR, %Na and %MR) and
indexes(Kelly index(KI), Permeability Index(PI) and the Canadian water quality index(CWQI)) were calculated
.To assess the usability of the shallow groundwater, results of the Water quality index models and other
calculated irrigation parameters were compared with the standards. On the average, virtually all the sampling
locations except Ombu, Igba and Jackreech were unsuitable for irrigation use.
Hydrological Calibration in the Mount Lofty Ranges using Source Paramenter Es...eWater
The catchments of the Mount Lofty Ranges (MLR) provide a crucial water resource for the rural and urban community of Adelaide. The Source Catchments model is one planning tool used to assess current and future water, sediment and nutrient yields from the catchment. The modelling is critical for future planning to ensure a safe and reliable water supply is maintained.
Linking PEST and Source Catchments for hydrology calibration was an efficient and repeatable method for calibration. Future work to improve the process could include calibrating with other rainfall runoff models such as Sacramento which better account for groundwater losses or explicit representation of groundwater in the model.
This project has focused solely on rainfall and runoff. It has not considered how external impacts (e.g. climate change) may change catchment hydrological characteristics or constituent characteristics such as EMC/DWC values. Future projects through the Goyder Water Research Institute aim to address some of these
issues. This project may produce data which will inform further work in this respect.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
The Development of a Catchment Management Modelling System for the Googong Re...GavanThomas
A scenario assessment model to assist the end-user in determining priorities for a series of agreed management prescriptions that can be enacted through controls on existing landuse
Oscillating water column and government regulation of oceanArjun Puthusseri
This paper describes the methods developed by Wavegen during the design and development phase of its air turbines suitable for installation into active renewable energy breakwater schemes, like the one being built in Mutriku, Northern Spain, ref. Fig.1.The breakwater water is located in 7m of water MWL and is NNE facing. The majority of the structure is of a conventional rubble mound construction and has a crescent shape with an overall length off 600m. The active zone where the oscillating water columns (OWC) are positioned are made from reinforced concrete and are of a novel modular construction.
DSD-INT 2016 Regional groundwater flow systems in the Kenya Rift Valley - Mur...Deltares
Presentation by Patrick Murunga Wakhungu (University of Twente) at the iMOD International User Day, during Delft Software Days 2016. Tuesday 1 November 2016, Delft.
Environmental Management Modeling Activities at Los Alamos National Laborator...Velimir (monty) Vesselinov
esselinov, V.V., et al., Environmental Management Modeling Activities at Los Alamos National Laboratory (LANL), Department of Energy Technical Exchange Meeting, Performance Assessment Community of Practice, Hanford, April 13-14, 2010.
66. Modeling Cooling Water / Wastewater Discharge to Surface Water NRG Dunkirk Generating Station, NY (2009) VC Summer Nuclear Power Plant, SC (2010) FMC Corporation Tonawanda Plant, NY (2008) RRI Energy, Conemaugh Power Plant, PA (2008)
67. Modeling Cooling Water / Wastewater Discharge to Surface Water RRI Energy, Keystone Power Plant, Shelocta, PA (2007) El Palito Refinery, Petróleos de Venezuela, S.A., Venezuela (2006) Von Roll America, East Liverpool, OH (2005)
82. provides basis for decision making based on integrated assessment of data
83. saves on long term costsPump & Treat System Optimization Marine Corps Air Station, Cherry Point, NC Net system capacity reduction of 17% was recommended, resulting in estimated cost savings of $450,000 per year
84. Conclusions Modeling is a powerful tool for evaluating complex problems Models are useful when multiple factors affecting the results are interconnected and change with time and/or space Modeling can help projects navigate through an array of issues related to environmental impact delineation, remedial design and permitting Shaw E & I has capabilities and experience to support soil, groundwater and surface water modeling needs