The Maryland Dredge and Fill Permit Process Handbook
Safe navigation in the waters of the State of Maryland is made possible, in part, by the continued maintenance dredging of the State's many ports and waterways. Dredging projects...
RCRA EP Toxicity Test Applied to Dredged Material
A set of 25 Great Lakes harbor sediment samples were subjected to bulk sediment analysis and the EP Toxicity Test. Based on the results of this pilot study, there appears to be little,...
Case History: North Slope Alaska Hydraulic Dredging
Alaska's North Slope Borough, with the aid of dredging machinery consultant Michael Weston, and geotechnical consultant Rittenhouse-Zeman & Associates, has pioneered...
Activity-Based Evaluation of Potential Bioaccumulation from Sediments
Sediment bioaccumulation potential evaluations can be improved by a two-level approach. Chemical analysis of sediment interpreted using phase-activity considerations in first-level evaluations...
Aquatic Bioassays in Dredged Material Management
Dredged material ranges from gravel and coarse sand to fine silts and clays, and may be free of contaminants or highly contaminated with a variety of chemicals from industrial, municipal,...
Reliability Analysis as Reflected from the Fourth International Symposium on Stochastic Hydraulics
Reliability analysis is perhaps one of the most practically important branches of the general field of stochastic hydraulics. Its potential applications include quantitative evaluation...
Sensitivity of Model Choice in Reservoir Design
The Box-Jenkins method of model construction and tests of model adequacy and fit are applied to a reservoir design problem. The sensitivity of the stochastic models used to generate synthetic...
Stochastic Analysis and Modeling Levels of a Land-Locked Lake for Resource Development
Lakes are valuable natural resources that can be tapped for recreational, agricultural and other extensive lake side developments. Natural variability of lake levels is an important factor...
Micros Can't Stand Alone
Unlike mainframes, which usually come as turnkey systems, microcomputers require separate accessories. Add-ons for micros include storage devices, memory boards, video boards, communication...
Superplasticizers: Reducing Water in Concrete
Superplasticizers or high-range water reducers are new types of chemical admixtures which when incorporated into concrete can cause significant increases in its slump but without any loss...
Disinfecting with Ultraviolet Radiation
The benefits of disinfecting treated effluent to meet discharge permits with ultraviolet radiation instead of ozone or chlorine are that it does not produce toxic chemical residuals like...
Coastal Engineering Abstracts 1984
Proceedings of the 19th International Conference on Coastal Engineering held in Houston, Texas, September 3-7, 1984. Sponsored by the American Society of Civil Engineers, the Institute...
Superplasticized Concrete Takes Off in Dallas
Some engineers are calling superplasticized concrete the most important advance in concrete technology in over three decades. Over the past four years superplasticized concrete has begun...
Activated Sludge
A Comparison of Oxygen and Air Systems
The use of pure oxygen in biological wastewater treatment is the only major advance which has occurred in the area of activated sludge treatment since the early 1960's. Furthermore,...
Arresting a Toxic Plume
At an abandoned gravel pit in New Hampshire turned into a dump site for hazardous liquid chemical wastes (as well as drummed solid waste), engineers had to race against the clock to stem...
Underpinning with Chemical Grout
During construction of Pittsburgh's new subway, it became necessary to protect the foundations of six downtown buildings. A detailed study of building foundation support options...
Sewers: Repairing Beats Replacing
Rehabilitating decaying sewers can be up to 70% less costly than replacing them. Yet most sewerage agencies wait until a pipe collapses before taking action, necessitating expensive emergency...
Design of Port and Coastal Structures for Ice Forces
Design of ice-affected port and coastal structures cannot be addressed in a few single specific terms, but must instead account for a matrix of elements differing at each site. Evaluation...
Methods of Ice Control
Ice control is the practice of holding ice in place or directing its growth and movement. Methods of ice control in navigable waters including locks are presented. Ice carried downstream...
Upgrading Water Filtration Plants
Adding or improving mixing, flocculation, and sedimentation devices, and changing filter media can significantly increase water filtration plant capacity. Water quality can often be improved...
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