Toward a Healthy Harbor
Once dubbed the filthiest harbor in America, the Boston Harbor is now the model of recovery. The Boston Harbor Project, a court-mandated 12-year, $3.4 billion cleanup, includes a sprawling...
All Fired Up
Plasma arc technology is being used to treat hazardous waste and contaminated soil and could be used to recycle landfills. The process uses plasma torches that operate at temperatures...
Design/Build Meets Hazardous Waste
For all types of design/build projects, a close cooperative relationship is required among the various stakeholders involved in the project. For hazardous waste cleanup design/build projects,...
Bringing Low Flow to Eskimos
Engineers in Alaska initiated a program to bring potable water and wastewater service to a town of 500 Yup'ik Eskimos. This entailed building a 7.2 km boardwalk over permafrost...
The Right Tooele for the Job
Parker describes how the nation's largest chemical munitions destruction facility was designed and how it will operate. The U.S. Signed on to the Chemical Weapons Convention...
Wastewater Systems
This section discusses wastewater systems as well as their components and earthquake vulnerability. Also present is an overview of a post-earthquake investigation procedure....
Tunneling Under Pressure
Work will begin this month on the South Bay Ocean Outfall (SBOO) project, a $140 million undertaking to build 3.6 mi of tunneling through the saturated ground of the Pacific Ocean. When...
Ground-Water Treatments Gain Ground
Ground water is the main source of the nation's public water supplies and is also used extensively for agricultural and industrial purposes. Yet our reserves are constantly...
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...
VOC Inventory at New York City Wastewater Treatment Plants
Although the New York State Clean Air Act Amendments of 1990 (CAAA) implementation plan is not yet in place, the Citys Department of Environmental Protection (DEP) is taking a proactive...
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...
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....
Dynamic Optimal Groundwater Remediation by Granular Activated Carbon
Objective functions to describe the operating and capital costs of GAC treatment are incorporated into a control theory model for optimal pump-and-treat groundwater remediation design....
A Multiperiod Approach for the Solution of Groundwater Management Problems using the Outer Approximation Method
In a previous work the Outer Approximation method was presented (Karatzas and Pinder, 1993 and 1996) for the solution of groundwater management problems where the selected pumping rates...
Use of SALQR Optimization in Large Aquifer Cleanup
A modified form of Differential Dynamic Programming (DDP), called Suc cessive Approximation to a Linear Quadratic Regulator (SALQR), is used to compute optimal policies for remediation...
Surface Oriented Fishway and Fish Guidance Curtain
We, the the U.S. Army Corps of Engineers, Walla Walla District, are developing a juvenile salmonid surface bypass and collection prototype for Lower Granite Dam. One of the more promising...
Santa Ana River Salt Marsh Restoration: Orange County, California, U.S.A.
As part of the All-River Plan of the Santa Aria River, the 92 acre Santa Ana River Marsh (Marsh) was constructed at the Pacific Ocean outlet in Orange County, California. This project...
Comparison of Methods for Sizing Secondary Treatment Filters for Wastewater
The trickling filter process in which a bacterial biomass is allowed to grow attached to a filter medium of rock or plastic is effectively used for removal of organic materials in domestic...
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)...
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