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A Step Ahead

May 1, 2002By Valcar Bowman, REM, CEA

Developing effective environmental emergency prevention, control and countermeasure

The control of toxic and hazardous substances that may pose unreasonable risks to health and the environment is the basic purpose of all environmental and product safety legislation. However, the Clean Water Act (CWA), Resources Conservation and Recovery Act (RCRA), Oil Pollution Act (OPA) of 1990, Clean Air Act (CAA), the Superfund Amendments and Reauthorization Act (SARA), otherwise known as the Emergency Planning and Community Right-To-Know Act (EPCRA) and ISO-14000 standards require plans to be developed by affected facilities and communities to minimize the risk and impact of non-permitted releases of toxic and hazardous substances.

Bioremediation on the Fast Track

May 1, 2002By Bryan W. Vigue, Steve S. Koenigsberg, PhD

An expanding groundwater treatment is moving accelerated natural attenuation into the mainstream

Bioremediation -- cleaning up soil and groundwater contamination with indigenous bacteria -- has been a holy grail for property owners and consultants, since it can eliminate active pumping systems, which include associated operations and maintenance, as well as treatment and disposal costs. However, the natural pace of unamended bioremediation or "leave-alone" natural attenuation tends to be too slow and uncertain to be practical.

Learning Sewer Science

May 1, 2002By Stephanie Hughes

A comprehensive science laboratory -- the result of a joint project among three California agencies -- teaches high school students about municipal wastewater treatment

"Now I know there are people at the other end of the toilet." That's the response of one Northern California high school student after completing a unique wastewater treatment laboratory. In the San Francisco Bay area, wastewater professionals are helping high school students understand the profession and to move beyond the standard "flush and forget." The program recently received the 2001 Public Education Award from the California Water Environment Association.

Leveling the Playing Field

May 1, 2002By Dale Beardsley

Considerations when specifying a level tranducer

Looking for a level transducer and unsure about what specifications are important? Trying to figure out exactly which type of level instrument to invest in that will not only save money, but also offer performance, reliability and longevity? This article explains which standard features, accessories and options to consider when looking for the most reliable and cost-effective level transducer on the market.

Measuring Up the TMDL Program

May 1, 2002By Leonard Shabman, PhD., Kenneth Reckhow, PhD.

Assessing the total maximum daily load approach to water quality management

The recent history of the total maximum daily load (TMDL) program is now well known, as is the debate it is has engendered.

Using Your Membrane

May 1, 2002By Pierre Cote, PhD

Immersed ultrafiltration membranes as an alternative to traditional water processes

The most commonly used methods for water treatment have been around for more than a century and rely on large basins to accommodate the processes of sedimentation, sand filtration and the addition of chemicals. These methods often do not address the current pressures placed on water resources, falling short of stringent new drinking water regulations.

Working Around the Clock

May 1, 2002By Gary Binderim

Preventive measures, such as operation diligence, emergency response plans and effective technology safeguard against contamination

The safety of the nation's water is protected by a cooperative relationship between governments at every level and water producers and purveyors. The U.S. Congress makes national water policy and has authorized the U.S. Environmental Protection Agency (EPA) to implement this policy by means of the Safe Drinking Water Act of 1974, as it is periodically re-authorized and amended.

A Sure Bet for Cleaner Water

March 1, 2002

U.S. EPA's voluntary performance track ups the ante on environmental stewardship and promotes improved wastewater treatment techniques

Changing the Channel

March 1, 2002

Using sediment transport and stable channel design in urban stream restoration

Odor Control Versus Emission Control

March 1, 2002

Selecting one technology over the other is a function of individual facility needs and cost effectiveness

Program of Attack

March 1, 2002By Thomas E. Barnard, PhD, PE

Water quality modeling of distribution systems can be an integral component of emergency preparedness

From the Editors

January 1, 2002By Jason Hensel

Water Wars

Gallium Reclamation Comes of Age

January 1, 2002By Jeff Travis

A new wastewater treatment effectively recovers spent gallium while recycling high-purity water back into the process

The CAN-Do Approach

January 1, 2002

Computer Aided Negotiation (CAN) resolves water resources desputes

What's Growing On?

January 1, 2002By Katherine L. Pace

The Pros and Cons of Using Genetically Engineered Crops to Conserve Water Resources