Chromate

The Boomsnub site in the state of Washington was listed as a Superfund site in 1995. The site consists of two parcels of land, which previously contained two unrelated businesses that contributed separately to contamination of soil and groundwater.

Deck: 

Superfund site cleanup of chromate-contaminated groundwater

About The Author: 

Frank DeSilva is national sales manager for ResinTech, Inc. He has been in the water treatment industry for more than 20 years. He can be reached at 760.809.4864, or by e-mail at fdesliva@resintech.com.

Activation Date: 
December 1, 2005
Issue Reference: 
Legacy
Legacy ID: 
16531

National Ground Water Association

WQP: What is the NGWA? Give us a brief overview of the association and its function


Kevin McCray: The NGWA, founded in 1948, is the third largest water-related membership organization in the world. Nearly 15,000 international members are committed to the association’s mission of advancing the expertise of all groundwater professionals and to furthering groundwater awareness and protection through education and outreach. These professionals come from contracting, manufacturing, science, supply, engineering and government sectors.

About The Author: 

For additional information, contact Kevin McCray at kmccray@ngwa.org.

Activation Date: 
November 1, 2005
Issue Reference: 
Legacy
Legacy ID: 
16448

Groundwater Contamination: Sources & Prevention

Overview of regulations and contamination factors

About The Author: 

Marianne R. Metzger is general products business unit manager for National Testing Laboratories, Ltd. She can be reached at 800.458.3330, ext. 223, or by e-mail at mmetzger@ntllabs.com.

Activation Date: 
November 1, 2005
Issue Reference: 
Legacy
Legacy ID: 
16442

The Challenges of Stormwater Management

Stormwater management and its role in the larger challenge of preservation of water quality around the world is an evolving issue. As commercial development continues at record levels, both the quantity of runoff and water quality are issues that need to be looked at carefully. The engineering community is being pushed to design new solutions that keep groundwater and surface water ecology safe and that also protect development economics.

Deck: 

Stormwater Treatment

About The Author: 

Bryan A. Coppes is the vice president of research and development for Storm Tech, Inc. He is responsible for product development and R & D at Infiltrator Systems. Since 1993, he has been involved in the design process for Infiltrator's product lines and has assisted in establishing the StormTech subsidiary. Prior to joining Infiltrator Systems, Coppes worked in engineering and product development in the lift industry. He has a BS in mechanical engineering from the University of Connecticut and an MBA from Rensselaer Polytechnical Institute.

Activation Date: 
November 4, 2002
Files: 
Legacy
Legacy ID: 
13411

Groundwater Crisis and Sustainable Agriculture in Northern China

Although China ranks sixth in the world in total water resources, there is a shortage. The average water resources per capita is 2,300 m3, making it only one fourth of the world average per capita, while the unit plantation area of water resources is only one half the world’s average value.

Deck: 

Groundwater resources throughout northern China are drying up at an astonishing rate.

About The Author: 

Zhang Guang-xin and Deng Wei are associate professors at Changchun Institute of Geography, the Chinese Academy of Sciences, Changchun, P.R. China.

Activation Date: 
April 2, 2002
Legacy
Legacy ID: 
13037

Effects of Recharge of Chlorinated State Water Project Waters to Groundwaters in Lancaster Area of California

As the population in Southern California increases, more and more demands are being put on the state’s groundwater resources, further exacerbating the overdraft problem. Many communities in Southern California are recharging their aquifers with imported surface waters to combat this problem. The major recharge normally is carried out during wet weather periods when surface water is plentiful. However, recharging these groundwater aquifers with imported surface water can create the potential for water quality degradation. The problem can start when surface water is disinfected with chlorine to prevent biofouling and remove pathogens.

Deck: 

Groundwaters in many parts of California are an important sole source of water supply. However, in some areas indiscriminate pumping has lowered aquifer levels by hundreds of feet. This has caused sediment compaction and ground subsidence.

About The Author: 

Hisam A. Baqai, P.E., G.E., is the division manager of the Lahontan Regional Water Quality Control Board in Victorville, Calif.

Activation Date: 
April 2, 2002
Legacy
Legacy ID: 
13036

Advanced Treatment for Groundwater: Treating Low-Quality Groundwater for Municipal Use

Groundwater sources that can be used for drinking water purposes are requiring increasing degrees of treatment to meet the requirements of both the regulating agencies and the consumer.

Deck: 

Disinfection

About The Author: 

Ralph Gelvin, P.E., is a senior engineer with Burns & McDonnell.
Don Novak, P.E., is a project manager with Burns & McDonnell.

Activation Date: 
November 13, 2001
Legacy
Legacy ID: 
12769

Meeting the Challenge: Revitalizing the Las Vegas Wash

In response to growing concerns over water quality issues in the Wash, a committee has developed a comprehensive adaptive management plan to save this primary outlet for water flows.

Deck: 

Ecosystem Management

Activation Date: 
October 19, 2001
Legacy
Legacy ID: 
12707

Long-Term Settlement of a Large Water Standpipe

When tank settlement is anticipated, certain precautions must be taken to assure that the tank settles properly.

Deck: 

Water Tanks

About The Author: 

Steven Law, Ph.D., P.E., is a principal engineer and John Kasprzak is a design technician of the Infrastructure Systems Group of the Washington Suburban Sanitary Commission, Laurel, Md.

Activation Date: 
May 21, 2001
Legacy
Legacy ID: 
12392

Using Horizontal Wells for Groundwater Remediation

 

Deck: 

At Work on Groundwater Treatment

Activation Date: 
April 23, 2001
Files: 
Legacy
Legacy ID: 
12338