1. Welcome To GWRTAC Go to GWRTAC's groundwater Central(c) at www.groundwatercentral.info for a searchable database of groundwater technology information! http://www.gwrtac.org/

View (Text Only) Version of this Page Welcome to the GWRTAC Web Site! Go to GWRTAC's Groundwater Central(c) at www.groundwatercentral.info for a searchable database of groundwater technology information! The Groundwater Remediation Technologies Analysis Center (GWRTAC) compiles, analyzes, and disseminates information on innovative ground-water remediation technologies. GWRTAC prepares reports by technical teams chosen from Concurrent Technologies Corporation ( CTC ), the University of Pittsburgh, and other supporting institutions, and also maintains an outreach program. Dr. Dawn Kaback serves as the director of GWRTAC. Dr. Edgar Berkey continues to be involved with GWRTAC as an advisor. Ms. Diane Roote serves as GWRTAC's project manager and is supported by appropriate CTC staff scientists and engineers. Mr. Faruk Ozer provides assistance via the University of Pittsburgh. GWRTAC's activities are guided by an Advisory Committee consisting of highly qualified members of the ground-water remediation community. NOTICE: It was with great sadness that we experienced the death of our GWRTAC co-director, Dr. Frederick G. Pohland, on January 9, 2004. Dr. Pohland was an instrumental part of GWRTAC since 1995. Professor and Edward R. Weidlein Chair of Environmental Engineering at the University of Pittsburgh, Dr. Pohland died peacefully after a short illness. Dr. Pohland was active in many professional organizations, including the American Society of Civil Engineers, the American Academy of Environmental Engineering, and the National Academy of Engineering. He received numerous honors and awards and authored over 150 technical and scientific publications in his field. Although we miss him deeply, we are proud to announce the creation of a memorial fund in honor of Dr. Pohland. Please click on the

2. Groundwater.com Is The Home Of The Groundwater Forum Which Is A Discussion Group groundwater.com is the home of the groundwater forum, a discussion group to exchange information and discuss all aspects of groundwater. Join Our Free groundwater Mailing List. . http://www.groundwater.com/

Subscribe Unsubscribe Join Our Free GroundWater Mailing List.

3. UK Groundwater Forum Source of information and a platform for information exchange on groundwater topics in and for the UK. http://www.nwl.ac.uk/gwf/

UK Groundwater Forum "To ensure that groundwater plays its full part in meeting the needs of society and the environment and to promote a common understanding of groundwater issues." "The UK Groundwater Forum will do this by identifying national research needs and disseminating knowledge through discussion and partnership between stakeholders." Recent Publications Research Strategy Research Database About the Forum Registration ... Links This web-site is maintained by the The Secretariat This page was last amended on 14/Aug/00 E-mail: gwforum@bgs.ac.uk

4. Freshwater Website: Groundwater (Table Of Contents) An exploration of all aspects of groundwater an essential and vital resource for 25% of all Canadians. Environment Canada Canada. groundwater Links, All Links. http://www.ec.gc.ca/water/en/nature/grdwtr/e_gdwtr.htm

document.write(""); Aquatic Ecosystems Groundwater Lakes Permafrost ... Teacher's Corner Groundwater Links All Links Publications - General Publications - Technical Educators/Acitvities ... Introduction Properties What is groundwater? Main types of porosity Groundwater flow What is an aquifer? ... Estimated depth and residence time of world's water supply Groundwater use Almost nine million Canadians depend on groundwater Percentage of Canadian population reliant on groundwater Groundwater and the world's freshwater supply Groundwater as a source of energy ... Groundwater quality Contamination/Pollution How we contaminate groundwater Groundwater contamination from a waste disposal site Sources of contamination Saltwater intrusion ... Groundwater and wetlands Conclusion Safeguarding our groundwater supply Further information What's New About Us ... Canada Site The Green Lane TM , Environment Canada's World Wide Web site Important Notices

5. King County Groundwater Management Generic and local information on the occurrence, movement, and management of ground water. http://dnr.metrokc.gov/wlr/wq/groundwater.htm

Groundwater Management What is Groundwater? Groundwater Education Groundwater Protection Committees 2003 Annual Report Groundwater is rain water that has filtered into (or recharged ) the ground and then stays beneath the surface like water in a wet sponge. All soil materials fill with water, although we usually think of groundwater being located in coarser soil materials such as sand or gravel, zones called aquifers where the water can easily be obtained and used. Finer soils, like silts, clays, and intact rocks, ( confining beds ) yield water only very slowly. Groundwater can be observed when it fills a well to a level called the water table . It moves from areas with a high water table to areas with a low water table, but at a very slow rate, usually only inches per day even in the most productive aquifers. Over a long time, groundwater discharges to surface water bodies such as lakes, wetlands, streams, rivers, and the ocean. Groundwater provides "base flow" for rivers - that's why they keep running after the rain has stopped falling. Groundwater is the major source of drinking water for citizens in the eastern, southern, and western (Vashon and Maury Islands) parts of King County, beyond the area supplied by the

6. Scisoftware - Provider Of Environmental Software, Groundwater Software For Water Scisoftware is a provider of groundwater software, environmental software, groundwater modeling software, surface water modeling software, hydrology software, hydraulic engineering software, Environmental Database. Geotechnical»groundwater»Public Domain Software. Surface Water http://www.scisoftware.com/

Search Featured Ground Water Modeling System GMS - V. 5.0 Information Privacy Statement Price Guarantee Contact Us Welcome! We have launched a new website for the Scientific Software Group. The links below here will redirect you to our new domain: www.scientificsoftwaregroup.com . You can still access our older pages from the header bar links above if you wish. Questions? Call us at 1.866.620.9214 Toll free (US and Canada) or drop us an E-Mail New Products MINTEQA2 for Windows RIVERMorph ... MIDUSS Scientific Software Group, an Internationally-known software company Categories Air Pollution Environmental Database Geotechnical Groundwater ... Visualization Monthly Specials gINT Scientific Software Group

7. California Groundwater Protection, CA Ground Water, MtBE, Perchlorate, Arsenic, Dedicated to protecting California groundwater against contamination such as Hexavalent Chromium, Perchlorate, NDMA, MtBE and Arsenic. http://www.grac.org/

GRAC is dedicated to protecting and improving groundwater through education and technical leadership. Sorry, but you will need a frames-capable browser like or Internet Explorer 3.0 or higher to view this site. Resource Links

8. Main Provides environmental assessment and remediation services, especially for soil and groundwater contaminants. Offices throughout the Eastern United States. http://www.gesonline.com

Environmental Consulting and Remedial Contracting E-mail us your questions or comments. Please report technical issues to our Webmaster

9. Groundwater Biology Home Page particular regards to crustaceans. Links to other sites with information on groundwater biology. Literature. Journals. Museums. http://www.geocities.com/~mediaq/index1.html

10. The Groundwater Foundation nonprofit educate people about groundwater take action for protection and conservation water education activities festivals, community projects http://www.groundwater.org/

Contact Us Become a Member Request Catalog Site Map ... Home Free e-mail newsletter The Groundwater Foundation The Groundwater Foundation is a nonprofit organization dedicated to educating and motivating people to care for and about groundwater. Learn more. Welcome to The Groundwater Foundation's website. The purpose of this site is to inform visitors about groundwater and the related environment, inspire them to get involved in groundwater protection through our programs and events, and support to The Groundwater Foundation through memberships, donations, event registrations, and catalog sales. Join The Groundwater Foundation Become a member of the Groundwater Foundation and receive discounts on all Foundation products and events as well as subscriptions to The Aquifer , the Groundwater Foundation's quarterly publication, and The Recharge Report , an electronic magazine that includes reports on timely groundwater issues. Foundation memberships make great gifts for birthdays, anniversaries, and other special events.

11. D & A Environmental Inc, Committed To Offering Quality Environmental Services Offers site investigations, consulting work, soil and groundwater remediation, OSHA compliance audits, underground storage tank testing, non destructive testing, tank removal API 653 above ground tank inspections, leadbased paint inspections and risk management, asbestos inspections and abatement, indoor air quality testing, water quality testing ,and site characterization. http://www.dandaenvironmental.com

"Committed to Offering Quality Environmental Services" Our Scope of Services Our Staff Request Information on Services You are visitor number 120 N. Abington Road Clarks Summit PA 18411 Ph: (570)586-1306 Fax: (570)586-7998 E-mail : alayers@dandaenvironmental.com Site designed and hosted by Andres Web Services, Inc. If you have suggestions or comments please contact webmaster@andresweb.com

12. The Groundwater Foundation The groundwater Foundation This Internet site is the home page of the groundwater Foundation, an organization created to educate and motivate people to care for and about groundwater. Students http://rdre1.inktomi.com/click?u=http://www.groundwater.org/&y=0244F3896B078

13. University Consortium Solvents-in-Groundwater Research Program Dealing with the behavior, fate and remediation of chlorinated solvents in the subsurface. http://www.science.uwaterloo.ca/research_groups/ucsgrp/

University Consortium Solvents-in-Groundwater Research Program The University Consortium Solvents-in-Groundwater Research Program is a large university-based research program directed at the behaviour, fate, and remediation of chlorinated solvents in the subsurface. The Consortium Research Program began in 1987 with the goal of advancing the understanding of the behaviour, fate and remediation of chlorinated solvents in groundwater. Of the various types of industrial contaminants that afflict groundwater, the chlorinated solvent problem is the most important to industry because it occurs at many thousands of sites, it is long lasting, it typically extends deeper than other contaminants and is very mobile in the dissolved form, which causes large plumes. Billions of dollars have been spent characterizing and remediating sites, but no significant sites have been permanently restored and many site characterizations are found deficient when issues of risk assessment, natural resource damage, or natural attenuation become paramount. Although pump-and-treat has stabilized many plumes, many of the pumping systems will be required in perpetuity because of large source zone mass. The research program derives advantage from long-term experimental use of a shallow sand aquifer at a military base 50 km northwest of Toronto (the Borden site). At this site many experiments have been completed and several new ones are in progress, in which chlorinated solvents were released into the aquifer followed by intensive monitoring with remediation trials to assess technology performance. The performance assessments are more quantitative than is possible at real sites because of the detailed knowledge about the solvent mass put into the aquifer. The Borden aquifer has sufficient natural complexity to provide insights into real site issues.

14. National Groundwater Association National groundwater Association The National groundwater Association's stated purpose is to provide guidance to members, government representatives, and the public for sound development, http://rdre1.inktomi.com/click?u=http://www.ngwa.org/&y=0285DEC055CB091C&

15. Remediationsolutions.com Offers to sell or lease dualphase vacuum extraction groundwater remediation systems for complex sites. Also sells other products for environmental applications, such as bailers, gloves, and tyvek. http://www.remediationsolutions.com/

Welcome to remediationsoloutions.com. Our name is our business. We offer state-of-the-art remediation alternatives for complex environmental situations. We lease and sell packaged dual phase remediation systems, conduct monthly operations and maintenance on new or existing systems, as well as other environmental services. Please call or email for more information. We also sell environmental supplies, such as bailers, gloves, tyvek coveralls, etc. Do not hesitate to call or email, we will work with you any way we can. We can personally help you or find someone who can. Thanks for viewing our website. Contact Information Please contact Southern Remediation Equipment, Inc. with any questions relating to this site, or if we can be of service to you for your complex sites. Telephone FAX Location Jackson, Mississippi, USA Electronic mail General Information: info@remediationsolutions.com Sales: sales@remediationsolutions.com Webmaster: bryanb@remediationsolutions.com

16. Kid's Corner Of The Groundwater Foundation Kid's Corner of the groundwater Foundation This site is a special section of the groundwater Foundation, dedicated to youth awareness and involvement with groundwater protection. There are http://rdre1.inktomi.com/click?u=http://www.groundwater.org/KidsCorner/kidscorne

17. Genesis Of High Arsenic Groundwater In The Bengal Delta Plains, West-Bengal And Mattias von Br¶mssen writes on the soil chemistry that causes the problem. http://hem.passagen.se/broemssen/abstract.html

Genesis of high arsenic groundwater in the Bengal Delta Plains, West-Bengal and Bangladesh Division of Land and Water Resources, Thesis Report Series 1999:18 Department of Civil and Environmental Engineering Royal Institute of Technology, Stockholm, Sweden ABSTRACT The high arsenic groundwater of the Bengal Delta Plain (BDP) in India as well as in Bangladesh, has become a priority health issue. A large population ( Arsenopyrite (FeAsS) and/or pyrite (FeS ) are the primary source of arsenic in natural systems. In sedimentary systems, arsenic is also adsorbed onto the reactive surfaces of secondary oxides and hydroxides of iron, aluminium and manganese (HFO, HAO and HMO). An aerobic (1) and an anaerobic (2) hypothesis have been put forward to explain the mobilisation of the arsenic in the groundwater. 1) When groundwater is withdrawn, oxygen may enter the aquifer and oxidise the primary sulphides and subsequently releases arsenic and sulphate in groundwater. 2) Alternately, arsenic may be derived as a result of desorption and reductive dissolution of the surface reactive mineral phases such as hydrous ferric, aluminium and manganese oxides (HFO, HAO and HMO) present as coatings in the aquifer sediments. Phosphate is adsorbed onto HFO in a similar way as arsenic. The mechanism of arsenic and phosphate is initialised by anoxic water in the aquifers. Watersamples from wells in Chakdaha, West-Bengal, India and Bangladesh were analysed for a number of chemical parameters. Some porewater/BAT-point samples were also taken from a depth of 3 to 5 meters in Chakdaha and compared with the well samples. The groundwater was found to be neutral to slightly alkaline and essentially Ca-HCO

18. The Nature Of Water Groundwater The Nature of Water groundwater This resource covers all facets of groundwater, with links to an introduction followed by a section on the properties of groundwater which includes What is http://rdre1.inktomi.com/click?u=http://www.ec.gc.ca/water/en/nature/grdwtr/e_gd

19. Freshwater Website: Publications - FSA-5: Groundwater Electronic version of Freshwater Series A5 groundwater - Nature s Hidden Treasure. groundwater – Nature s Hidden Treasure. groundwater needs protection. http://www.ec.gc.ca/water/en/info/pubs/FS/e_FSA5.htm

document.write(""); Comments Data/Tools Directories eGroups and Listserves ... Teacher's Corner Contents Groundwater needs protection What is groundwater? What is an aquifer? Almost nine million Canadians depend on groundwater ... Bibliography What goes down, must come up Groundwater needs protection In recent years, however, a number of events affecting groundwater quality have contributed to a heightened public awareness and concern about the importance and vulnerability of the resource. Media reports about the contamination of wells from leaking gasoline storage tanks or dry cleaning solvents, and about the effects on groundwater of chemical leakage from landfill or industrial waste disposal sites have raised public concerns about groundwater quality. Early in 1990, chemical seepage, caused by the tire fire at Hagersville, Ontario, threatened to pollute groundwater supplies in that region. Newspaper reports alerted area residents and helped focus attention on the problem of groundwater pollution. Even where we might not use it directly as a drinking water supply we must still protect groundwater, since it will carry contaminants and pollutants from the land into the lakes and rivers from which other people get a large percentage of their freshwater supply. Groundwater and geology Groundwater is also important quite apart from its value as a resource or its close connection with surface water supplies. Engineers must consider groundwater when planning almost any kind of structure, either above or below the ground. Ignoring the effect of groundwater on slope stability can be both costly and dangerous. Geologists see groundwater as a major force in geological change. The fluid pressures exerted by groundwater, for example, play an important role in the occurrence of earthquakes. Geologists also know that the movement of water through underground geologic formations controls the migration and the accumulation of petroleum and the formation of some ore deposits.

20. Geoconsultants, LLC Is An Environmental Services And Geological Engineering Firm An environmental services and geological engineering firm, created to serve clients with environmental, energy, and water supply needs including comprehensive environmental and geological services, site remediation, environmental monitoring, health and safety, project and construction management, and groundwater engineering. http://www.geoconsultantsllc.com/

Our Company GEO Consultants, LLC (GEO) is an environmental services and geological engineering firm, created to serve clients with environmental, energy, and water supply needs. Our founding partners, with over 60 years of combined experience, left successful careers with large technology-based firms to start GEO in 1997. Our management staff blends the large-company culture of project planning, execution, and quality control with small-company flexibility and responsiveness. GEO's experienced staff of engineers, geologists, and technicians is uniquely qualified to diagnose and resolve the most challenging logistical and technical problems at large or small operating facilities. OUR PRIORITIES Our clients' priorities are our priorities. We emphasize service, technical competency, and providing timely, cost-effective solutions. Our Services GEO offers comprehensive environmental and geological services including site remediation, environmental monitoring, project and construction management, and groundwater engineering. GEO Consultants, LLC

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