Wrapping up Environmental Issues in an Embankment
Contamination on a construction site can lead to increased risk of unanticipated construction delays and increased costs. In response, some owners are opting for proactive approaches to...
Going Where No Man Can Go
After the 1979 accident at Three Mile Island Unit 2 in Harrisburg, Pa., some areas of the reactor plant were too contaminated for workers to survey, much less clean. The article describes...
Nutrified Sludge
A new biological treatment process, Nutrification, enables a wastewater treatment plant to remove phosphorus from influent water at an operating and maintenance cost 35% less than that...
Isotropic Fractionation During Air-Water Transfer of Oxygen and Nitrogen
We present empirical results that show the kinetic fractionation during gas exchange is 0.9972 ? .0002 for oxygen and 0.9987 ? .0001 for nitrogen. These values are larger than the solubility...
Hypolimnetic Aeration in Three Swiss Lakes
Eutrophication is quite common in low altitude Swiss lakes. Government agencies have set up phosphorus and oxygen limits for streams and lakes. Aeration equipment has been in use for up...
Oxygen Mass Transfer to Flowing Ground Water Using Oxygen Microbubbles
Mass balance and transfer of oxygen has been studied from oxygen microbubbles to low dissolved oxygen ground water passing through variously configured pilot scale vertical slice test...
Ground Water in the Pacific Rim Countries
This proceedings,
Symposium on Ground Water
This proceedings,
Ground-Water Modeling Without Fear
Computerized ground-water modeling has leapt from the cloistered laboratory to the field project as more and more programs are written for the personal computer. These easy-to-understand...
Determination of Vertical Leakage for Nile Valley
The determination of vertical groundwater leakage is particularly important for irrigated agriculture where adequate drainage is required to prevent high water tables and related problems...
Remediation and Mitigation Associated with Contamination of Water by Irrigation Drainage
Inorganic trace constituent or pesticide contamination problems associated with irrigation drainage from Federally constructed or managed irrigation projects have been identified in several...
Regional Risk Assessment of Environmental Contamination from Oil Pipelines
This paper presents a methodology for assessing the risk of environmental contamination from oil pipeline leaks due to earthquakes. Risk is measured both as volume of oil released and...
A Methodology for Assessing the Risk of Hazardous Materials Release Following Earthquakes?A Demonstration Study for the Los Angeles Area
A methodology for estimating the risk of post-earthquake hazardous materials releases was developed for the National Science Foundation and the National Center for Earthquake Engineering...
Marina Del Rey: 30 Years of Environmental Impact
Marina del Rey - the world's largest man-made recreational boating harbor - also holds primacy in pollution. Marina del Rey is home port to more than 6,100 vessels in wet...
Pressure-Treated Wood Effect on Marina Environment
Pressure treated Southern Pine and Douglas Fir are the most commonly used materials for marina construction in the United States. The preservatives currently used, creosote, chromated...
Meeting MARPOL Annex V Requirements, A Model for Recreational Ports and Harbors
MARPOL (an abbreviation for marine pollution) is an international agreement to reduce marine pollution globally. It is comprised of five annexes, and the purpose of Annex V is to reduce...
Avalon Harbor: Example of a Successful Destination Harbor
Avalon Harbor, which is located on the southeast side of Catalina Island approximately 25 miles (40 km) off the coast of Southern California, is an excellent example of a destination harbor...
Simplified Tidal-Flushing Model for Small Marinas
This paper describes the development and application of a new water quality screening model - STEAM (Simplified Tidal Embayment Assessment Model). This model simulates the first-order...
Marina Flushing Along a Structurally Controlled Canal
Evaluation of flushing characteristics of a proposed marina located along a structurally controlled navigable canal is reported. This canal is operated to maintain the water level of Lake...
Predictive Techniques for Marina Water Quality Assessment
The construction of new marinas in coastal areas requires as assessment of potential impacts on water quality as a part of the permit process. This paper summarizes a study sponsored by...
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