Risk as a Sustainable Development Criteria
Project alternatives can be compared on a relative basis when all factors contributing to social, environmental and economic risks are weighed by all the stakeholders concerned. It is...
The Integration of Receiving Water Impacts in the Evaluation Process of Alternative Designs for CSO Abatement in Providence, RI
The Providence, Rhode Island sewer system is undergoing a combined sewer overflow abatement program. One measure of the program's effectiveness is the reduction of water quality...
Selecting Design Conditions as Part of a Watershed Approach to Water Quality Control
EPA water quality guidance recommends that water quality criteria be exceeded no more than once in three years. Standard approaches, based on the use of critical design conditions, have...
Application of Mathematical Models for Flood Forecasting in Sri Lanka
With the introduction of microcomputers, the application of mathematical models in water-resources planning and forecasting became increasingly popular during the last decade in Sri Lanka....
Using HEC-RAS to Compute Scour at Bridges
HEC-RAS (River Analysis System) is an integrated system of software, designed for interactive use in a multi-tasking environment. The system is comprised of a graphical user interface...
Effect of Surface Water and Ground Water Interaction on Atrazine Transport to Pumping Wells
High concentrations of agricultural chemicals in flood waters have been reported in many Midwestern rivers and streams. The public water supply wells of a number of riparian communities...
Pollutant Transport Across Porous Stream Beds
The presence of porous streambeds generates a significant interaction between the main stream flow above it and the flow through the porous sub-stratum. This coupling affects both flows,...
Simulation of Interaction between Canal Regulation and Groundwater
l-D canal routing module has been developed to perform the operation of controlled structures for regulating flow in the canal network system and incorporated in the Three-Dimensional...
Mixing Influences on Cement-Based Waste Forms
High-shear, medium-shear, and low-shear mixing tests were conducted on paste and paste + fly-ash mixes: The specimens, cured for 28-days, were tested for free water generation, compressive...
Innovative Effluent Management for Sustainability
The City of San Jose, California (USA) has developed an original, integrated approach to managing wastewater treatment plant effluent and preserving the receiving water ecosystem. Highlights...
Simulation of Perilithic Algae as a Biofilm and Its Interaction with the Water Column
A one-dimensional bioflim model has been constructed consisting of a particulate phase of algae and inert material and diffusive transport of nutrients and oxygen. Also included is mass...
Survival of Coliform Microorganisms in Sediments from a Treated Water Reservoir
Experiments were performed seeking the source of coliform contamination in a treated drinking water reservoir operated by the Los Angeles Department of Water and Power. In recent years...
A Process Unit Based Approach to Media-Integrated Waste Minimization: A Paint Manufacturing Case Study
Research conducted at the School of Engineering, University of Guelph, has developed a media-integrated waste minimization plan for a major Ontario paint and coatings manufacturer. The...
New Block Copolymers for Membrane Materials
New fluorine containing polymer materials, which contain n-fluoro octylacrylate (pFOA) or n-fluorooctylmethylacrylate (pFOMA) repeating units, are being explored for use in thin film composite...
Protecting Drinking Water: Rapid Detection of Human Fecal Contamination, Injured, and Non-Culturable Pathogenic Microbes in Water Systems
The rapid, potentially-automatable extraction of filter retentates has allowed quantitative detection of the unique biomarker for human fecal contamination, coprostanol, and the signature...
Reservoir Sediment Management Practices of the Los Angeles County Department of Public Works
The Los Angeles County Department of Public Works (Department), which includes the Los Angeles County Flood Control District, owns and operates 15 major flood control dams. Most of these...
Application of Regime Theory in Practice: A Case Study
Alluvial channels are known to adjust their slope, width, depth and velocity to achieve stable conditions given a supply of water and sediment. Scientific investigations of stable channels...
Modeling the Lake Decatur Watershed in Illinois to Evaluate Effects of Best Management Practices on Nitrate Loading
The Illinois State Water Survey recently completed a two-year monitoring and modeling study of the Lake Decatur watershed in Illinois to develop land use management alternatives that would...
Use of Artificial Neural Networks for Agricultural Chemical Assessment of Rural Private Wells
The detection of agricultural chemicals in rural private wells has prompted for numerous studies at regional, state, and national levels. A principal concern arises from the fact that...
Neural Networks Predict Pesticide Leaching
The goal of this work was to determine whether artificial neural networks (ANN) can be used to predict the percentage of applied pesticide that leaches through 50 cm of turfgrass covered...
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