Reservoir Water Quality Modeling in Northern Portugal?Some Case Studies
In the last two decades environmental problems have become a major concern in Portugal as the effects of water pollution have gradually impaired the quality of water resources. Mathematical...
Hillsboro Basin Surface Water Management Model
This study presents the results of the hydrologic and hydraulic analysis of the 103-square mile Hillsboro Basin located in South Florida. The purposes of the project were to develop a...
Identifying the Critical Path and Building Coalitions for Restoring Degraded Areas of the Great Lakes
Since 1985, eight Great Lakes States, the Province of Ontario, and the governments of Canada and the United States have led the development and implementation of remedial action plans...
Use of Contaminant Mobility and Transport Parameters to Determine Water Testing Protocol
By 1994, EPA plans to regulate 83 contaminants in public water supplies. For rural communities and individuals who are not classified as public systems, the cost to monitor all 83 contaminants...
BRASS Modeling of Lo?za Reservoir, Puerto Rico, for Sediment Management Operations
Loiza reservoir, the principal water supply for metropolitan San Juan, delivers 3.5 m3/s (80 mgd) to the Sergio Cuevas filter plant. Sedimentation...
Statewide NPS Management Strategies
Statewide nonpoint source (NPS) management strategies are necessary because there are several different levels of authority involved, and the priority of action needs to be related to...
Expert System for Operating A Treated Water Supply System
This paper presents a systematic approach to the development of an expert system to operate a treated water supply system for meeting daily water requirements. A treated water supply system...
A TVD MacCormack Method for Open Water Hydraulics and Transport
Water Quality and Hydrologic Characteristics of a Wet Detention Pond
A small wet detention pond was instrumented to determine treatment efficiencies. Annual loads showed a reduction from the inflow to the outflow for ammonia as nitrogen (39%), organic nitrogen...
The Potential Fate of Particulate Contaminants from the Rehabilitated Ranger Uranium Mine
In the initial period after rehabilitation of the Ranger Uranium Mine most particulate matter released into Magela Creek will be wash load. 10% of the annual deposits on the backwater...
Engineering Mechanics
This proceedings,
Reuse Rules
Cities that discharge sewage effluent to surface water are under increasing pressure to reduce concentrations of heavy metals, ammonium and nitrate, and substances such as toxic organic...
Use of the Break-Off Method for the Evaluation of High Performance Concrete
The Break-Off test is one of the recent developments for testing in-place concrete strength. This research was undertaken to investigate the reliability of the Break-Off test as a measure...
Realistic Specifications for Manufactured Sand
Data which demonstrate the beneficial effect of using fine aggregate having high fines contents on concrete properties are presented. All data indicate that the use of a high fines content...
Procedures for Evaluating Aggregate Gradation Specifications
The construction and rehabilitation of transportation facilities annually consumes huge quantities of aggregates. And, the variability in supply and demand for these materials as well...
Consistency and Fairness in Geotextile Specifications
By clearly defining required material properties in terms of 'Minimum Average Roll Values' for routine quality control tests and 'Average Test Values in the Weakest Principal Direction'...
Concreting at Subfreezing Temperatures
Temperature affects the rate at which portland cement concrete develops strength. Below about 20?C, strength gain is retarded, whereas at higher temperatures it is accelerated. Strength...
Aerogel?A Transparent, Porous Superinsulator
Silica aerogel is an unusual, transparent, low density, thermally insulating solid useful for a variety of applications. We have been investigating silica aerogel for use in transparent...
Physicochemical and Rheological Properties of Microwave Recyled Asphalt Binders
The purpose of this study was to analyze microwave recycled asphalt binders using Gel Permeation Chromatography (GPC), Fourier-Transform Infrared Spectroscopy (FTIR), and Dynamic Mechanical...
Concrete Surface Treatments?A Selection Guide
Concrete deterioration can take many forms. The most common forms of concrete surface deterioration includes delaminations, spalling and scaling. This deterioration is usually caused by...
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