Pipe Utility Evaluations With the Aid of GIS
Geographical Information Systems (GIS) are starting to be used on a day to day basis to solve community problems and optimize the use of their valuable resources. One engineering application...

Knowledge-Based Expert Systems For Geotechnical Factors in Dredging

Geotechnical Analysis of Capped Dredged Material Mounds

Monitoring of Structures During Repair of Underground Utilities
A collapse of underground utilities at a power plant required the constant monitoring of the surrounding structures during excavation and replacement of the damaged pipes. A computer-based...

A Near-Term, Long-Duration, Lunar Outpost Design
The design of a long-term human outpost on the Moon will require shielding from not only solar proton and galactic cosmic radiation but also from micro-meteoroid and meteoroid strikes....

Settlement of a 15-Meter Deep Fill Below a Building
The site for a building in western Pennsylvania was undermined, with the mine base about 15 m below planned final grade. Rock above the mine was highly fractured and of poor quality, indicating...

Delineating Limits of Remediation for Heavy Metal Contaminated Sediments in River and Cove Areas

Collecting Sediment Environmental and Geotechnical Data Using an Impact Core Sampler

U.S. Nuclear Regulatory Commission Staff Technical Position on Investigations to Identify Fault Displacement Hazards and Seismic Hazards at a Geologic Repository
This paper outlines the guidance provided to the U.S. Department of Energy by the Nuclear Regulatory Commission (NRC) staff in its Staff Technical Position (STP) on appropriate investigations...

Calcite Deposits in Fractures at Yucca Mountain, Nevada
Calcite is one of the latest-formed minerals within fractures at Yucca Mountain. Petrographic and chemical studies of these calcites have the potential, in conjunction with fluid-inclusion...

Heavy Metal Accumulation in Subsurface, Estuarine Sediments and Inferences for Anthropogenic Enrichment: N.W. Florida Coast
In an attempt to quantify the degree of contamination and the thickness of the contaminated subsurface sedimentary wedge, approximately 100 samples were extracted from the cores and subjected...

Modeling Two-Dimensional Subsurface Flow, Fate and Transport of Microbes and Chemicals
A two-dimensional model to simulate the subsurface flow, microbial growth-degradation, and transport and biodegradation of chemicals in groundwater environments (2DFATMIC) is developed....

Effect of Agricultural Drainage on Water Quality in the Northeastern U.S. and Canada
Drainage has been used in the northeastern U.S. since colonial times. It has only been since the 1970s subsurface drains have been installed at a significant rate in Quebec. Drainage in...

Pond Biology and Food Chain Implications

Food-Chain Transfer of Trace Elements to Wildlife
Trace elements in agricultural subsurface drainage water may bioaccumulate in wildlife through their feeding on organisms living in evaporation ponds or other habitats that receive the...

Watertable Control and Reuse of Drain Water
One of the short term alternatives for disposal of saline groundwater is direct reuse of agricultural subsurface drainage water for irrigation of the land being drained. If the groundwater...

Subterranean Disposal of Irrigation Drainage Waters in Western San Joaquin Valley
Subsurface drainage waters in the western San Joaquin Valley of California are laden with selenium and other toxic elements and above-ground disposal creates a hazard problem (Letey et...

Soil Moisture Monitoring Using a Portable Capacitance Probe
Accurate monitoring of soil moisture has long been in integral part of a successful agricultural management system. Water has increasingly become a valuable and much sought after natural...

Variability of Hydraulic Response of Constructed Wetlands
Dye tracer studies using Rhodamine WT have been performed on two field scale subsurface flow wetland units for further improvement of secondary treated municipal effluent at Byron Bay...

Simulation of Subsurface Drainage of Highway Pavements
An analysis of the drainage of a pavement system from initial saturation incorporates a realistic assessment of the drainable porosity of the base. This analysis indicates that if a granular...

 

 

 

 

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