Beach Town Cleanup
The Avila Beach remediation project in California required the demolition of numerous structures and part of the beach in order to remove more than 200,000 cu yd (153,000 m�) of contaminated...
Subirrigation: Water Table Management
Water table management (subirrigation) is accomplished by controlling the water table, usually through a subsurface drainage system. The crop is subirrigated with water being furnished...
Wetlands Treat Mine Runoff
Engineers were asked to design a treatment system for the severely acidic drainage from the Mike Horse and Anaconda metals mines in Montana. Challenges included the mountainous terrain,...
Betting on the Baseline (Available in Geoenvironmental Special Issue only)
In construction contracts, new deductive differing site conditions (DSC) clauses provide for credits to owners when contractors encounter better-than-anticipated subsurface conditions....
Microtunneling under Honolulu
Highly congested urban utility corridors present some of the most difficult conditions for construction of new underground pipelines, especially when subsurface conditions are also very...
Cold Climate Solution
To reduce turbidity in sedimentation-basin discharge, Anchorage, Alaska, is experimenting with constructed wetlands to augment storm-water discharge treatment from several storm-drain...
Water, Water, Everywhere (Available in Geoenvironmental special issue only)
The discovery of extensive contamination just prior to construction of an underground library storage facility prompted engineers from the Minneapolis-based firms CNA Consulting Engineers...
Up against the Wall (available in Geoenvironmental special issue only)
A tight site in Portland, Oregon, bounded by existing roads and a light rail line and bordered by underground utilities, required project engineers to develop a new type of shoring wall...
A Risk-Based Approach to Subsurface NORM Disposal
(No paper) Naturally occurring radioactive materials (NORM) has become an environmental concern for the petroleum industry. NORM scales results when naturally occurring radium co-precipitates...
Sensitivity of Stormwater Conveyance System Cost to Design Recurrence Interval
(No paper) The cost of a piped and/or swaled stormwater system is determined principally by the storm recurrence interval (e.g., 5-year design storm) used to design it. That is, the present...
The Arch Bridge Mystery
For some years, concrete from the Manayunk Bridge�a long-idle, spandrel-arch railroad bridge in Philadelphia�had been spalling toward the streets and river below. While a system of nets...
Electrical Explorations (Available in Geo-Environmental Special Issue only)
Recent advances in state-of-the-art, relatively fast, two- and three-dimensional electrical resistivity imaging (also called profiling or tomography) have offered a new view on subsurface...
Downtown Goes Uptown in Stainless Steel
In an unusual urban planning endeavor, a business district in Houston upgraded infrastructure, and added stainless steel design elements to unify the area. About $11 million was raised...
Site Investigations: A Guide (available in Geoenvironmental Special Issue only)
A geotechnical engineer looks at the evolution of reports on subsurface conditions, the most uncertain portion of construction. Most of the cost and risk of construction occurs beneath...
Putting Wetlands to Work
Wetlands, whether natural or engineered, have enormous potential to clean up wastewater, but in the past, the public called on civil engineers to drain wetlands en masse as a public benefit....
The Invisible Infrastructure
Most developed countries have 50- to 100-year-old underground utility systems that carry far greater loads than their designs. They're difficult to repair or replace, yet...
Filtration and Drainage in Geotechnical/Geoenvironmental Engineering
This proceedings,
Wetland Wonder
Pinellas County and the Southwest Florida Water Management District's Surface Water Improvement and Management (SWIM) Department jointly retrofitted an urban drainage basin...
Geotechnical Baseline Reports of Underground Construction
Guidelines and Practices
For many years, several forms of interpretive geotechnical reports have been incorporated into the Contract Documents for underground construction projects. Based on recent feedback obtained...
Groundwater
An Endangered Resource
This proceedings,
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