Wonderwall
A Superfund site near Seattle was surrounded by a 2,200-ft-long soil-bentonite wall to keep contaminants from entering nearby water sources. An earlier remediation effort had failed to...
Evaluation of the Tensar ARESTM Retaining Wall System
Prepared by the Highway Innovative Technology Evaluation Center (HITEC), a CERF Service Center. This report evaluates the ARES Retaining Wall System,...
Practice Periodical of Hazardous, Toxic, and Radioactive Waste Management
The Practice Periodical of Hazardous, Toxic, and Radioactive Waste Management publishes articles relating to the allied engineering and scientific disciplines involved in the environmental aspects of the...
Containing Spills and Fire
A $95 million project to consolidate five jet fuel supply facilities that serve Los Angeles International Airport is nearing completion. The project shows how codes for wastewater-treatment...
Spawning a Hydroelectric Plant
A hydroelectric facility which utilizes fishway attraction water on the Columbia River between Washington and Oregon will tap a neglected source of power and save many endangered fish...
Blasting Densifies Volcanic Debris (Available only in
The relatively new ground improvement technology of blast densification overcame soil problems posed by volcanic ash at Mount St. Helens National Volcanic Monument. In 1993 WSDOT began...
Environmental Site Investigation Guidance Manual
This manual,
Returning Veteran
The Veteran's Memorial Bridge on the Cuyahoga River is a vital link in the transportation system of Cleveland and a gateway to the city's downtown area. But time...
Critical Issues in the Monitoring and Control of Toxic Air Contaminants at POTWs
Todays challenge at Publicly Owned Treatment Works (POTWs) is to assess and reduce the environmental risk posed by toxic air contaminants (TACs). This paper attempts to identify the critical...
A Simplified Process Audit to Design an Affordable Pollution Prevention and Waste Management Plan -
This paper presents a simplified approach to the general audit procedure that is applicable to the Small and Medium Enterprise (SME). The process leads to the identification of major sources...
Pilot Testing of a Zero-Discharge Treatment Process
As environmental regulations become more stringent, pulp and paper mills are investigating alternatives to conventional biological treatment and discharge of effluents into receiving waters....
Analysis of Bank Stabilization in Steep Complex Streams Using A Two-Dimensional Model
In cases where the channel is fairly uniform, and not divided, one-dimensional hydraulic models, such as HEC-2, generally give adequate results for scour evaluations and bank protection...
Drainage Ponds and Demonstration Wetlands
In California's southern San Joaquin Valley, subsurface irrigation drainage pumped into shallow evaporation ponds often contains elevated concentrations of selenium. The selenium...
Training for Bridge Inspectors in Stream Stability and Scour
The Federal Highway Administration (FHWA) is now requiring a comprehensive evaluation of bridge scour as part of the National Bridge Inspection Standards (NBIS). FHWA has established January...
Permeability of Clay Liners with Contaminants
Clays are increasingly used as liners for waste disposal facilities. Chemical compatibility studies with hydraulic conductivity tests must be performed to determine the effect of the waste...
Habitat Preservation and Enhancement Associated with San Diego Creek Flood Control Channel Improvement
San Diego Creek, an important regional flood control channel in southern Orange County, California, flows 2.4 kilometers through the mixed-use areas of Irvine Center (San Diego Freeway...
Design and Implementation of a Multi-Faceted Site Remediation
This technical paper presents a case history of the design, construction, and start-up of a multi-faceted site remediation system. The case history includes a description of the site background,...
Secondary Containment Design Practices
Over the past several decades the design approach to containment of spills has not been consistent resulting in release of hazardous substances into the environment. The increased discovery...
Study of Biological Reactors for Control of Odor, VOC and Toxic Emissions from Wastewater Treatment Plants
An experiment was performed to assess the use of biological reactors to treat off-gases from publicly owned treatment works (POTWs) containing low concentrations of hydrogen sulfide (H2S)...
Rock Riprap for Grade Control
Rock chutes (riprap channels on steep slopes) are used as grade control structures to safely conduct a water flow to a lower elevation. Common procedures used for design of rock riprap...
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