It is well known that the federal Clean Water Act once focused on chemical pollutants from industrial "point source" discharges. However, the federal statute has evolved into something much broader. How the U.S. Environmental Protection Agency's (EPA) implementation of the statute has changed was summarized in a chart by David G. Davis of EPA in 1998.
- By Clay Burns, Jim Christman
This article originally appeared in the 11/01/2003 issue of Environmental Protection.
Water utilities have been using free chlorine to disinfect drinking water for more than 100 years and have been measuring chlorine residuals for almost as long. Monitoring the product water ensures adequate chlorine is present for disinfection. It also helps the utility prevent taste and odor problems arising from overchlorination.
This article originally appeared in the 11/01/2003 issue of Environmental Protection.
A new stormwater management technology comes to the rescue in controlling pollutants released from combined sewer overflows (CSOs) during periods of heavy precipitation
This article originally appeared in the 11/01/2003 issue of Environmental Protection.
Adding business value takes a strategy, not just tactics
This article originally appeared in the 11/01/2003 issue of Environmental Protection.
A commercially available product is designed to accelerate in situ metals cleanup in groundwater systems.
- By Bryan W. Vigue, Anna Willett, Stephen Koenigsberg
This article originally appeared in the 11/01/2003 issue of Environmental Protection.
This article originally appeared in the 11/01/2003 issue of Environmental Protection.
Confronting business management's awareness of environmental realities
This article originally appeared in the 10/01/2003 issue of Environmental Protection.
Restoration of the Mesopotamian Marshlands will incorporate people as part of the ecology in a project called "Eden Again"
This article originally appeared in the 10/01/2003 issue of Environmental Protection.
Large capacity storage tanks customized as filtration units proved successful in treating the massive volume of contaminated groundwater related to Boston's Turnpike extension project
This article originally appeared in the 10/01/2003 issue of Environmental Protection.
The recent Earth Observation Summit signals a new international effort to deal with climate change and other important issues by setting up an integrated Earth observation system
This article originally appeared in the 10/01/2003 issue of Environmental Protection.
A case for voluntarily controlling domestic greenhouse gas emissions now
- By Richard Cooley, M.Ch.E.
This article originally appeared in the 10/01/2003 issue of Environmental Protection.
Metals are commonly used in manufacturing plants and technical facilities. Production processes for the metal finishing, transportation (automotive, aviation, railroad, subway), electronics (including computers and semiconductor devices), telecommunications and mechanical parts fabrication industries consume vast quantities of heavy metals cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), nickel (Ni), lead (Pb), zinc (Zn), etc.) and metal-containing chemicals every day.
- By Francis J. Brady, Imran M. Jaferey
This article originally appeared in the 09/01/2003 issue of Environmental Protection.
This article originally appeared in the 09/01/2003 issue of Environmental Protection.
The environmental applications for perstaltic pumps continue to grow
This article originally appeared in the 09/01/2003 issue of Environmental Protection.
The ethics and benefits of covering bioterrorism in the environmental science classroom
This article originally appeared in the 09/01/2003 issue of Environmental Protection.
Traditionally, training has often been approached as an afterthought -- a vendor demonstrating a specific product to operators after the product has been purchased and installed. But in today's highly competitive marketplace, training is an important part of the whole solution. Training provides operators with tools and insights that can help them lower costs and improve efficiency plant wide.
This article originally appeared in the 09/01/2003 issue of Environmental Protection.
A guide to the most successful control methods used to tame liquid-phase odors and vapor-phase odors at wastewater treatment plants
This article originally appeared in the 09/01/2003 issue of Environmental Protection.
This article originally appeared in the 09/01/2003 issue of Environmental Protection.
Transferring environmental science to hospitals and medical schools
This article originally appeared in the 09/01/2003 issue of Environmental Protection.
The enormity of the problem facing the drinking water industry first surfaced in the United States in 1993, when Cryptosporidium, a single-celled parasite living in the intestines of warm-blooded animals, made its way into the drinking water in Milwaukee, leaving 403,000 people sick and 104 people dead.
This article originally appeared in the 09/01/2003 issue of Environmental Protection.