Tappan Zee Set for Inverset (Available only in
Replacing the deck on New York's Tappan Zee Bridge is a ticklish problem, considering that all of the work has to be done at night. A combination of isotropically reinforced...
Do-Nothing Cleanups
Restoring polluted soil and ground water to pristine condition is, in some cases, neither cost-effective nor feasible. So what's the best way to close these sites with minimal...
Sound Way to Save Fish
Fish protection need not cost an arm and a fin. Using light and sound to spare fragile blueback herring and other species a harrowing fate, the U.S. Army Corps of Engineers devised a fish...
Milwaukee's Ozone Upgrade
After the 1993 outbreak of illness caused by Cryptosporidium in Milwaukee, the city moved forward on an $89 million upgrade of its treatment facilities with ozone filtration, the only...
Who Springs for Water?
Many questions have been raised about the future of water quality and maintenance. The Rocky Mountain Institute has created a report with four scenarios, each based on whether the government...
Modeling Contaminated Sediments
Using a computer model to analyze and predict sediment transport only works when the analyst considers the model's limitations and the physical processes involved, and conducts...
Washington Buildup
Despite its reputation as a city mired in fiscal crisis, Washington, D. C., continues to improve its basic infrastructure. A look at three ongoing projects�a sports arena, a waste water...
Pump and Treat and Wait (Available only in the Geo/Environmental Special Issue)
Pump and treat, a common ground-water cleanup technique, is slow to clean up deep contaminated aquifers. Adaptive intermittent pumping can increase the cleanup rate�and decrease costs�by...
Asphalt-Concrete Water Barriers for Embankment Dams
Because of its simplicity in design and construction, the asphalt concrete core is rapidly becoming the water barrier of choice for embankment dams in many parts of the world. This is...
Evaluation of the Troxler Model 4430 Water-Cement Gauge
Prepared by the Highway Innovative Technology Evaluation Center, a CERF Service Center. This report describes a HITEC evaluation designed to determine...
Detecting Leaks Electronically (Available only in Geo/Environmental Engineering Special Issue)
An innovative monitoring system originally developed to detect cyanide leaks at gold mines can now monitor the integrity of geosynthetic liners at municipal- and hazardous-waste landfills...
On Target: The Arrowhead East and West Tunnels
Two new water tunnels in Southern California will feature continuous impermeable linings, extensive probing and grouting, and unique seismic sections to minimize damage in fault zones...
Water Quality Regs: Staying Ahead
After a century in which water utilities could stay well ahead of most regulations simply by being responsible, professional organizations, they now seem to be playing catchup in a game...
Residual Benefits
Stringent pretreatment and effluent standards and a lack of capacity prohibit their release into sanitary sewer systems. Landfill disposal is costly. The National Pollutant Discharge Elimination...
Stormwater NPDES Related Monitoring Needs
This proceedings,
Cleanup Solution--Conflict Resolution
Distrust and misinformation often prevent timely resolution of ground-water contamination problems. In Toms River, N.J., engineers used a computer-generated model of the cleanup site in...
Columbus Clear Wells
At an average of 8 million gal. each, six new clear wells at the Hap Cremean Water Plant in Columbus, Ohio represent the largest post-tensioned, reinforced concrete noncircular tanks ever...
Greening of Ground Water
As many as 69 different organic compounds and 24 metal species can be found in ground water underlying the 85 acre Bofors-Nobel Superfund site in Muskegon County, Mich., a testimony to...
Guidelines for Cloud Seeding to Augment Precipitation
This manual of professional practice,
Toxic Air Emissions from Wastewater Treatment Facilities
Return to search