Fundamentals and Advancements in Hydraulic Measurements and Experimentation
This proceedings,
Computer Control of CSOs
Like many older cities, St. Louis has a combined sewer system and is faced with the difficulties of dealing with combined sewer overflows (CSOs). The Metropolitan St. Louis Sewer District...
Sludge Under Pressure
Few wastewater engineers ever have to deal with high-pressure pumping. In San Diego, however, city engineers will soon oversee a 100,000 ft long psi main that will transport sewage sludge...
Development of High Performnance Shotcrete (Theoretical Considerations)
This paper presents some theoretical considerations for studies on high performance wet-mix shotcrete. A new laboratory shotcrete pump and rheometer are being developed to study the effects...
Automatic Calibration of 3D Finite Differences Model Parameters? Application to the Finnsjon Site (Sweden)
Calibration of 3D finite difference model parameters is usually carried out using a noon-automatic 'manual' procedure until observed heads, for instance, are simulated with a sufficient...
A Comparison of Geostatistically-Based Inverse Techniques for Use in Performance Assessment Analyses at the WIPP Site?Results from Test Case No. 1
The groundwater flow pathway in the Culebra Dolomite aquifer at the Waste Isolation Pilot Plant (WIPP) has been identified as a potentially important pathway for radionuclide migration...
Coupled Simulation-Optimization Approach to Wellhead Protection Area Delineation to Minimize Contamination of Public Ground-Water Supplies
A loosely coupled simulation-optimization procedure is used to determine the steady-state pumping rates for individuals wells in a multiple well municipal wellfield that result in the...
Agricultural Water Conservation Technology Transfer
Efforts to implement computer programs which encourage water and energy conservation in the Columbia Basin, are described. Irrigators use the irrigation scheduling program to receive recommendations...
Water Pipelines: Tackling Toxics
In the spring of 1988, residents of Girwood, Alaska contacted the state's environmental agency to complain of foul-tasting drinking water. While most complaints came after...
T. L. James Marine Group Beach Nourishment Projects
To complete the referred to projects as used the highly maneuverable, 1,300 cubic-yard-capacity hopper dredges ATCHAFALAYA and MERMENTAU, both of which are self-propelled, split-hopper,...
Tidal Pumping Effects in Coastal Loop Canals
During the last half century the world's coastal zones have been rapidly developed and urbanized, especially in the industrialized world. The coastline of the State of Florida is a typical...
Pumping or Slurry Walls?Which Works Best for Groundwater Containment?
Results of a numerical optimization model capable of designing containment systems for sites with three-dimensional groundwater flow indicate that site hydrogeology and economic considerations...
Kern County Water Agency?1991 Emergency Ground Water Recovery Program
The 1991 Emergency Ground Water Recovery Program was conceived and implemented by the Kern County Water Agency to deliver water to four water districts to save permanent crops. The Program...
Computer Modeling Approach to Optimize Pumping for Containment of LNAPL Contamination in Unconfined Aquifers
This paper presents an approach to optimize pumping for immobilizing a floating contaminant consisting of a light non-aqueous phase liquid in an unconfined aquifer. The approach combines...
OCEA Goes Green
While spanning the range of civil engineering work, most of the nominees for this year's Outstanding Civil Engineering Achievement Award were either designed to clean the...
Well Response in a Leaky Aquifer and Computational Interpretation of Pumping Tests
An analytic solution is derived describing flow in a horizontal confined leaky aquifer of infinite extent around a fully penetrating well of negligible storage capacity. The differences...
Concentration History During Pumping from a Leaky Aquifer with Stratified Initial Concentration
Analytical and numerical solutions are employed to examine the concentration history of a dissolved substance in water pumped from a leaky aquifer. Many aquifer systems are characterized...
An Overview of Methods to Delineate Capture Zones of Pumping Wells
Rainfall over the surface area of an unconfined aquifer, which contributes flow to a pumping well under Dupuit conditions, was estimated. Using a two-dimensional analytical model with...
Designing Self-Cleaning Wet Wells for Wastewater Pumping
Guidelines for the design of self-cleaning wet wells for variable speed pumps are given. The progress of research on the design of wet wells for constant speed pumps, including submersible...
Removal of Tidal Fluctuations from Pumping Test Data
A simple technique for removing tidal fluctuations from drawdown data was examined. This technique relied simply upon transforming measured surface water level data to fit the pretest...
Return to search