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Risk Analysis of Drinking Water Treatment and Supply Facilities Handling Highly Hazardous Chemicals
Due to increasing public concern of risks from handling highly hazardous chemicals at various facilities, a number of state regulatory agencies, including the State of California, have...

Production of Nitrous Oxide Gas under Sequencing Batch Reactor System
N₂O, like CO₂, H₂O, and CH₆,...

Fluidized Bed Denitrification of Secondary Effluent during Wastewater Reclamation in Southern California
A pilot scale fluidized bed denitrification bioreactor was operated for a period of three years as one unit process in a series designed to repurify secondary effluent for subsequent indirect...

Optimal Geometric Shape of a Surface Aeration Tank
This paper presents the results of a laboratory investigation on three cross-sectional shapes?square, rectangular and circular of surface aeration tanks, without any baffles, to find out...

Evaluation of Modelling Needs for Central Valley Project Operations
The Bureau of Reclamations Central Valley Operations Office (CVO) has responsibility for planning, implementing, overseeing, and coordinating the various operations of the Central Valley...

Annual Delivery Decisions in the Simulation of the California State Water Project and Federal Central Valley Project using DWRSIM
This paper presents a new annual contractor delivery determination procedure for the California Department of Water Resources' State Water Project (SWP) and Central Valley...

Genetic Algorithms for the Design of Groundwater Remediation Systems
The performance of genetic algorithms (GAs) to solve optimal aquifer remediation design problems is investigated. Some difficulties associated with GA models include premature convergence,...

Groundwater Remediation Design When Pretty Good is Good Enough
This paper introduces some new approaches toward the optimal design of groundwater remediation systems or any other engineered systems. These new approaches primarily consist of making...

Overview of Drought Response Strategies
An overview of drought response strategies in the United States is presented. The paper focuses on tactical strategies for mitigating the impacts of drought conditions. A general structure...

Drought Management in Northeastern Colorado
The Northern Colorado Water District (the District) has established a set of policies and procedures and constructed a water storage and distribution system that allows for the effective...

California's Response to Drought
A reliable water supply is essential in supporting our society. Past experience during droughts in California suggest that appropriate action must be consistent with the severity of the...

Non-point Source Policies for Agricultural Drainage
There is limited experience in regulating the water quality impacts of nonpoint source subsurface agricultural drainage discharges. Recent efforts in California to regulate selenium discharges...

Results of Field Evaluations of the New Modular Inclined Fish Diversion Screen
The Electric Power Research Institute (EPRI) has developed and biologically evaluated a new type of fish diversion screen known as the Modular Inclined Screen (MIS). The MIS is designed...

Water Conservation Definitions From a Hydrologic Viewpoint
The definition of water management principles needed to satisfy societys water use objectives requires the use of terms and definitions that clearly describe the effects of various water...

Impact of Agricultural Water Conservation on Water Quality in Arid Irrigated Areas
Water quality constituents of concern in irrigation return flow include sediment, nitrate, pesticides, and trace elements. Each of these components can be affected by irrigation and drain...

Urban Water Conservation Efforts of the Irrigation Association
Water conservation, wise water use, efficient water management: no matter what terminology one uses to describe it, the fact is the topic of using less water permeates the irrigation industry....

Application of the Newton Method in Valve Discharge Coefficient Relationships
This paper presents a methodology that utilizes the Newton Method to compute the dimensionless valve discharge coefficient Cd from a manufacturers valve discharge coefficient Cv. The implicit...

Rethinking Well Efficiency
Many authors have suggested ways to evaluate water well efficiency. Most of these have either compared some form of measured drawdown with theoretical drawdown or measured the fraction...

Wellhead Protection Area Predictions and Implications for the Biscayne Aquifer in Miami, Florida
The need to protect groundwater supplies from sources of contamination is of particular relevance to densely populated urban areas, such as Dade County (Greater Miami), in South Florida....

Liability of Engineers When Wetlands Laws Change
Engineers who perform wetlands delineations or design facilities in wetlands areas are increasingly sued in court when wetlands laws or regulations change. Owners and developers whose...

 

 

 

 

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