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Taming Lively Buildings
Mechanical damping systems are increasingly being used for controlling dynamic responses of tall buildings. Several types of dampers are described, and compared, beginning with the three...

Parking Lot Gets White Top
The many-acre parking lot at the Valley Fair Mall shopping center in Salt Lake City, Utah is described. In 1985 the asphalt pavement was overlaid with concrete, making it one of the relatively...

New Approaches to Rehabbing Old Dams
The U.S. Bureau of Reclamation takes a look at several new ways of building old dams for maximum flooding. A labyrinth spillway was built at Ute Dam near Logan, N.M. to increase reservoir...

Postmodern Engineering
Momentum Place is a postmodern skyscraper in Dallas designed by architects John Burgee and Philip Johnson. The Datum-Moore Partnership, structural engineers, designed the structural system...

Permeability of Grouts Subjected to Chemicals
This paper presents the more recent results of a testing program which evaluated the long-term resistance to percolation of grouted soils, using acrylate, urethane and cement-bentonite...

Decreasing Clay's Permeability Using Aluminum Salts
The permeabilities of montmorillonite and kaolinite clays were reduced by precipitating aluminum hydroxide in the pores of the clay. The precipitate was formed by permeating the clays...

Design of Final Covers for Landfills
Final covers or caps are incorporated into a completed landfill to limit the amount of moisture percolation through waste materials. A properly designed final cover system provides the...

Audits & Analyses?New Jersey's Approach
The New Jersey Department of Environmental Protection is responsible for implementing environmental policy and administering a regulatory structure based on reliable research and monitoring....

Removal of Radon and Uranium from a water supply
The removal of Radon and Radium from drinking water with the help of granulated activated carbon (GAC) adsorption was investigated. A packed bed column was used for the purpose. It has...

Incinerating Dioxin Contaminated Waste at the USEPA Combustion Research Facility
The objective of the tests reported herein was to evaluate the incinerability of the toluene stillbottoms by determining whether 99. 9999% DRE could be achieved. All tests were performed...

Application of a Relative Site Ranking Methodology to Regulation of Groundwater Contamination Sites
An assessment methodology for ranking groundwater contamination sites is described. The ranking of nearly 100 actual contamination sites, and the definition and calibration of 'zones...

Remedial Measures for a Creosote Impoundment Closure
In conformance with the 1984 amendments to the Resource Conservation and Recovery Act (RCRA) Part 264 requirements, Burlington Northern Railroad (BN) constructed a double high density...

Effects of Organic Compounds on the Adsorption and Desorption of Metals in Soils
This study evaluated the adsorption and release rates of toxic metals in a soil system also impacted with organic compounds. The soil type studied is common to hazardous waste sites throughout...

Reduction of Nitrogen and COD by Land Disposal of Dairy Wastewater
Land disposal of industrial wastewater, and in particular the ridge and furrow (R&F) process, has been a popular and simple treatment method for many years. This study, conducted...

Risk-Based Design of Inspection Programs for Detecting Leaky Underground Storage Tanks
A mathematical framework is developed for estimating the effectiveness of large-scale inspection programs for leaky underground storage tanks. The framework incorporates the leak likelihood...

Risk Assessment Methodology for Determining Groundwater Contamination from Landfilling Sludge
Contaminant concentration criteria are required to prevent contaminant infiltration from leading to conditions which exceed health criteria. A methodology of groundwater has been described...

Clay Liner Hydraulic Conductivity: Comparison of Field & Laboratory Tests
Clay liner hydraulic conductivities at three hazardous waste landfill cells in Oklahoma and Utah were measured in the laboratory and in the field during construction. Prior to construction...

Clay Liner/Leachate Compatibility Modeling
Over the past several years, the results of many laboratory studies assessing the effect of various combinations of organic and inorganic chemical mixtures on the hydraulic conductivity...

Models of Organics Transport Through Soil Columns
A mathematical model is proposed for the transfer of organic solutes in soil. Two cases are considered namely transport of non-adsorptive solutes and transport of adsorptive solutes. Comparative-study...

Assessment of Analytical Techniques for Monitoring Petroleum Waste Land Treatment Systems
Optimization of wastewater land treatment effectiveness requires current knowledge of the microbiological ecosystem. Environmental parameters must be measured if they are to be adjusted...

 

 

 

 

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