121. DBS&A: Water Resources, Environmental Services, And Environmental Litigation Ser Specialties include vadose zone and groundwater hydrology and remediation, water rights, water resources, civil and geotechnical engineering. Based in New Mexico http://www.dbstephens.com/

Your browser does not support script News Dr. Stephens Discusses Emerging Issues in Water Contamination Litigation Dr. Stephens Presents at ASA-CSSA-SSSA and GSA Conferences Water Resources Environmental Services ... Home s="na";c="na";j="na";f=""+escape(document.referrer)

122. Pesticides And Groundwater Contamination, Bulletin 820-92 Pesticides and groundwater Contamination. Bulletin 820. Dr. Acie C. Waldron Pesticide Coordinator Ohio Cooperative Extension Service The Ohio State University. http://ohioline.osu.edu/b820/

Pesticides and Groundwater Contamination Bulletin 820 Dr. Acie C. Waldron Pesticide Coordinator Ohio Cooperative Extension Service The Ohio State University Introduction The Fate Processes Pesticide Transfer Pesticide Degradation ... Preventive Measures The author thanks Dr. William F. Lyon, professor, Dr. David J. Shetlar, assistant professor, Extension Entomology, and Thomas Camm, program assistant, Pesticide Applicator Training, Ohio Cooperative Extension Service, The Ohio State University, for their helpful review and comments. Information sources for this publication include the slide-tape presentation Protecting Groundwater, Cornell University; Fact Sheet No. 8, The Fate of Pesticides in the Environment and Groundwater Protection , Penn State University; the EXTOXNET publication Movement of Pesticides in the Environment , Michigan State University; and various other materials organized by the author for presentation at Pesticide Applicator Training Schools and professional meetings of agribusiness, commodity, and grower associations. All educational programs conducted by Ohio State University Extension are available to clientele on a nondiscriminatory basis without regard to race, color, creed, religion, sexual orientation, national origin, gender, age, disability or Vietnam-era veteran status.

123. MTBE Water Testing Private Wells Pennsylvania Methyl Tertiary Butyl Ether Facts Fact sheet on the fate and transport of MTBE (from underground gasoline storage tanks) in groundwater. http://wilkes1.wilkes.edu/~eqc/mtbe.htm

Wilkes University Center for Environmental Quality GeoEnvironmental Sciences and Engineering Department MTBE Fact Sheet Methyl Tertiary Butyl Ether MTBE- Well/ Groundwater Contamination Issues What is MTBE? Methyl Tertiary Butyl Ether In a major setback to the oil and chemical industries, on July 27, 1999 an EPA panel recommended that MTBE be reduced in use as a gasoline additive because of the toxic hazards that MTBE poses to drinking water supplies throughout the country. MTBE is a known animal carcinogen and possible human carcinogen. The reported U.S. production of MTBE in 1992 exceeded nine billion pounds - virtually all of it is added to gasoline. Oil companies reportedly make approximately $3 billion per year from MTBE production. MTBE Transport MTBE is highly volatile and would typically be expected to volatilize rapidly from soil surface s or water, but MTBE is soluble in water and highly mobile in soils and sorbs only weakly to aoil and aquifer material.. The solubility of MTBE in water at 25 C is approximately 5000 mg/L of a gasoline that is 10% MTBE. Whereas, non-oxygenated gasoline has a total hydrocarbon solubility of about 120 mg/L. In the atmosphere, MTBE is rapidly transformed into a formaldehyde compounds. Once in the soil, the natural or alternative remediation processes have shown a limited effectiveness for remediating this chemical through bioremediation. If found in groundwater at concentrations greater than 30 ppb, it is likely that the source is a leaking underground tank (UST) a point source. Lower concentrations probably represent a combination of point and non-point sources, which may include atmpospheric washout and stormwater runoff from parking lots, roads, etc..

124. Groundwater groundwater Everything you need to know about locating groundwater and finding underground wells. groundwater - Everything you http://www.groundwaterauthority.com/

@import "style.css"; Wednesday, May 26th, 2004 Bookmark This Page Email This Page Groundwater Find Well Water ... Site Map Groundwater by Nicole Garlock ArticleInsider.com Click Here For The Premier Resource For Ground Water Authority! What Is Groundwater? Groundwater is water that is found underground in the cracks and spaces in soil, sand and rock. Groundwater is stored in, and moves slowly through, layers of soil, sand and rocks called aquifers. Aquifers consist of gravel, sand, sandstone, and fractured rock. These materials are permeable because they have large connected spaces that allow water to flow through. When rain falls to the ground, the water does not stop moving. The water flows along the surface to streams or lakes, some of it is used by plants, some evaporates and returns to the atmosphere, and some sinks into the ground. The majority of Groundwater comes from rain, snow, and ice which seeps into the ground. Where Can You Find Groundwater? Groundwater can be found almost anywhere. The water table may be deep or shallow, and may rise or fall depending on many factors. Heavy rains or melting snow may cause the water table to rise, heavy pumping of groundwater may cause the water table to fall. Water in aquifers is brought to the surface through a spring or can be discharged into lakes and streams. Groundwater can also be extracted through a well drilled into the aquifer. Groundwater supplies are replenished, or recharged, by rain and snow melt.

125. Groundwater Model And Simulators By EnVision Manufacturer of environmental and geologic education products, including acrylic groundwater models (simulators). http://www.envisionenviroed.net

Sorry, your browser doesn't support Java(tm). enV i sion Environmental Education FUNDING - click here FREE VIDEO - click here Manufacturer of Environmental Education Products and Groundwater Models enVision Home Page About enVision Order Form Online Store ... Contact Us click on photo for additional images Envisioning the World Around Us W elcome to enVision Environmental Education - manufacturer of Groundwater Flow Models (or Groundwater Simulators) .  Our Models are assembled of high quality acrylic and are designed with ease of use in mind.  We are proud to offer the best and most preferred groundwater model availableno other model demonstrates as many features. All enVision simulators include pumps to recirculate the water, wells, springs, artesian wells, a lake, a malfunctioning septic systems and leaking underground storage tank and allow dye injection to simulate groundwater or contaminant flow. They are great for demonstrations at fairs, museums, children's groundwater festivals, watershed days, classroom demonstration, wellhead or source water protection committees and more. Check out a short video of the bedrock groundwater simulator in use: Windows Media - dial-up connection 300Kb Windows Media - high-speed connection - 2Mb RealPlayer - dial up connection - 500Kb RealPlayer - high speed connection - 2Mb For more information: enV ision Environmental Education c/o AHGI P.O. Box 146

126. Groundwater Technology BV - Bedrijfsprofiel groundwater Technology BV voert al zo n 25 jaar saneringen uit turnkey, lump-sum. Kostenbesparend, effectief en innovatief samen met de klant. http://www.gtbv.nl/

@import "css/screen.css"; @import "css/menu.css"; Groundwater Technology bedrijfsprofiel saneren referenties verhuur Divers ... documentatie Bedrijfsprofiel Groundwater Technology bedenkt, ontwerpt en realiseert innovaties in bodemsaneringen. We leveren altijd maatwerk of het nu gaat om in situ saneren , graven, natuurlijk afbraak, grondreiniging of locatiebeheer Onze oplossingen variëren van actieve en intensieve saneringen tot monitoren van natuurlijke afbraak. Bedrijven bieden we total care : dit loopt uiteen van onderzoek en sanering tot volledig locatiebeheer van de bodem. Ook behoort het risicodragend aannemen van projecten tot de mogelijkheden. Het oplossen van bodemverontreiniging is onze kracht. We saneren in situ en on site (dus ter plekke), we verplaatsen de problemen niet. Oplossingen winnen in kracht als ze groeien in dialoog met de klant. Wij weten hoe belangrijk het is dat we ons goed inleven in de situatie van de opdrachtgever. Op basis van vertrouwen en respect voor elkaars positie werken we samen met onze opdrachtgevers naar het optimale eindresultaat toe. Onze leidraad bestaat uit de vier basiswaarden van ons bedrijf: Duurzaam Bruikbaar Gelijkwaardig Flexibel Onze specialisten adviseren niet alleen, we staan ook in voor de uitvoering van de oplossing. We zijn geen aannemer, maar waarborgen wel de praktische uitvoerbaarheid en het succes van onze saneringen.

127. Covalent Labs: Providing Groundwater Remediation, Efficient Industrial Heating A Providing groundwater remediation. Dedicated to the efficient operation of industrial heating and cooling process and waster water systems. Located in Cincinnati, Ohio. http://www.covalentlabs.com

Applied Process Chemistry And Consulting Covalent Laboratories is dedicated to providing the necessary products and services for maximizing the efficient operation of industrial heating and cooling, process and waste water systems while protecting the health and safety of customers, co-workers and the environment. Home Waste Water Treatment Environmental Specialty Chemicals ... For Information Email: info@covalentlabs.com

128. Groundwater Stewardship Program groundwater Stewardship Practices •, groundwater Stewardship Practices. groundwater Stewardship Teams •, groundwater Stewardship Teams (GST). http://www.michigan.gov/mda/0,1607,7-125-1567_1599_1608---,00.html

Skip Navigation Michigan.gov Home MDA Home Sitemap ... Migrant Labor Housing Introduction Michigan Groundwater Stewardship Program Mission Mission: To provide information and assessment tools for pesticide and nitrogen fertilizer users which help them identify risks to groundwater associated with their pesticide and nitrogen fertilizer use practices and to coordinate local, state, and federal resources to help individuals reduce those risks More Funding General Funding Information Funding Revenues Contact Michigan Groundwater Stewardship Program Contacts AmeriCorps Members Directory Home *A* Syst Home *A* Syst How Home *A* Syst Will Help You How to Use Home *A* Syst Farm *A* Syst Farm *A* Syst (FAS) Farm *A* Syst Materials Farm *A* Syst Process Recertification Credits ... Technical Assistance and Cost-Share Field *A* Syst Field *A* Syst Technical Assistance Site Specific Materials Groundwater Stewardship Practices Groundwater Stewardship Practices Information About Abandoned Well Closures Local Priorities Practice Development ... Drinking-Water Well Screenings Information and Events Schedule Groundwater Stewardship Teams Groundwater Stewardship Teams (GST) Who Belongs on a Groundwater Team?

129. Groudwater Biology Home Page Extensive information and links on the biology of organisms living in cave waters and other groundwater systems. http://www.geocities.com/CapeCanaveral/Hangar/1167/index1.html

130. Arsenic Contamination Of Groundwater groundwater studies for Arsenic Contamination in Bangladesh and Ghana home page. Go Arsenic contamination of groundwater. Arsenic http://www.bgs.ac.uk/arsenic/

Home Contact Us Enquiries Downloads ... Education Arsenic contamination of groundwater Arsenic is highly toxic and carcinogenic. Groundwater is particularly vulnerable to contamination with arsenic as a result of natural geochemical processes and problems can be exacerbated by mining activity. Even natural concentrations of arsenic in groundwater can limit its suitability for drinking. It is now apparent that arsenic contamination of groundwater is quite extensive. In the last eight years, BGS has undertaken a series of collaborative investigations into the arsenic contamination of groundwater in various countries. These investigations have included both 'mining-related' and 'natural' sources of arsenic contamination. Many of these have been undertaken with support from the UK Department for International Development ( DFID Keratosis sufferer Bangladesh Phase 1 Bangladesh Phase 2 Ghana Arsenic Contacts ... Bangladesh claims against the British Geological Survey Information regarding the of BGS material and the BGS

131. Texas Water Matters Works to ensure adequate water for environmental and human consumptive needs, reduce future demand for water, educated decisionmakers, and involve citizens. Includes information about groundwater, planning, conservation, and economics. http://www.texaswatermatters.org/

Choose a Planning Region Select from below... The State Water Plan Find a Water Region Region A - Panhandle Region B Region C Region D - NE. Texas Region E - Far W. Texas Region F Region G - Brazos Region H Region I - East Texas Region J - Plateau Region K - Lo. Colorado Region L - S. Cen. Texas Region M - Rio Grande Region N - Coastal Bend Region O - Llano Estacado Region P - Lavaca About Us Water Planning Water Planning Home State Water Plan ... Home Managing and protecting our water resources is one of the most critical issues facing Texas today. As our population increases, human demands for water will grow. But we still need to ensure that there is adequate water for agriculture, industry and the environment. Decisions made now will have far reaching consequences for the livelihood of our state. Why should water matter to you? "Forgotten River" focus on water conservation effort Farmers Face Shortages if Drought Endures Aquifer study funded by USDA Senate Select Committee on Water Policy and Subcommittee on the Lease of State Water Rights Find out more Study Commission on Water for Environmental Flows Who, What, Where, Why?

132. Groundwater & Surface Water: Understanding The Interaction groundwater Surface Water Understanding the Interaction. A Guide for Watershed Partnerships. groundwater A Hidden Resource. Introduction. Water. http://www.ctic.purdue.edu/KYW/Brochures/GroundSurface.html

Frequent Questions Watershed Partners Nat'l Watershed Network State Contacts What's a... Watershed Watershed Address Watershed Partnership Water Glossary Watershed Guides Building Local Partnerships Getting to Know Your Watershed Managing Conflict ... Interaction Other Resources Watershed Quiz Conference Calendar eLeader Newsletters ... TMDL Resources Know Your Watershed is coordinated by Conservation Technology Information Center Understanding the Interaction A Guide for Watershed Partnerships Groundwater: A Hidden Resource. Introduction. Water. It's vital for all of us. We depend on its good quality-and quantity-for drinking, recreation, use in industry and growing crops. It also is vital to sustaining the natural systems on and under the earth's surface. Groundwater is a hidden resource. At one time, its purity and availability were taken for granted. Now contamination and availability are serious issues. Some interesting facts to consider... Scientists estimate groundwater accounts for more than 95% of all fresh water available for use.

133. Community Groundwater Irrigation Sector Project Currently active in 12 districts in Terai, Nepal. Offers collateral free loans to farmers for the construction of shallow tubewells. Includes project reports and photographs. http://www.cgisp.org.np/

134. Center For Groundwater Research Center for groundwater Research (CGR), Department of Environmental Science and Engineering (ESE), OGI School of Science and Engineering at the Oregon Health http://cgr.ese.ogi.edu/

CGR About CGR Introduction Faculty and Staff Facilities LEAP Directions Research SMZ Iron Walls IronRefs Database Oxygenates (MTBE) ... Hydrologic Modeling Education MERL CD-ROM Center for Groundwater Research Department of Environmental Science and Engineering 20000 NW Walker Road Beaverton, Oregon 97006-8921 USA Phone: (503) 748-1196, FAX: (503) 748-1273 Web: http://cgr.ese.ogi.edu/ Email: info@ese.ogi.edu Above: The acclaimed and authoritative reference book on the history, movement, and remediation of chlorinated solvents in groundwater. Click on the cover for details. cgr site

135. Groundwater Geochemistry And Remediation | Earth Sciences | University Of Waterl Summaries of research activities on the fate, transport and remediation of dissolved metals, metalloids and nutrients in groundwater, as well as development and application of in situ permeable reactive barrier technologies and reactive transport modelling. http://www.science.uwaterloo.ca/research/ggr/

Remediation Department of Earth Sciences University of Waterloo G roundwater G eochemistry R emediation Research Group Leaders David W. Blowes Professor Department of Earth Sciences University of Waterloo Canada Research Chair in Groundwater Remediation Ph.D. University of Waterloo, 1990 Carol J. Ptacek Adjunct Professor Department of Earth Sciences University of Waterloo Research Scientist National Water Research Institute Burlington, Ontario CANADA Ph.D. University of Waterloo, 1992 LINKS TO AREAS OF RESEARCH M ine W aste G eochemistry P ermeable R eactive B arriers I norganics I n the S ubsurface R eactive T ransport M odelling Introduction to Our Research Group Our research group focuses on the fate, transport and remediation of dissolved metals, metalloids and nutrients in groundwater. This research includes detailed field investigations, laboratory studies, development of reactive barriers and other passive remedial solutions, and development of mathematical models to predict the complex geochemical behavior of these systems. We have conducted detailed investigations of mine sites, mine-waste disposal facilities, wetlands, on-site sewage disposal systems and other industrial sites. Laboratory studies often focus on reaction mechanisms utilizing batch and column experiments. Mathematical modelling has focused on the development of fully-coupled reactive transport codes that can account for thermodynamic and kinetic controls on chemical reactions between groundwater and the aquifer material. Remediation research is focused on the development of passive

136. International Groundwater Symposium March 2002 International groundwater Symposium organized by IAHR and cosponsored by IAHS, AGU, and ASCE/EWRI. Lawrence Berkeley National Laboratory Berkeley, CA http://www.lbl.gov/Conferences/Groundwater/

International Groundwater Symposium '02 Symposium Topics ... Security Notice "Bridging the Gap between Measurement and Modeling in Heterogeneous Media" International Groundwater Symposium organized by IAHR and co-sponsored by IAHS, AGU, and ASCE/EWRI Lawrence Berkeley National Laboratory Berkeley, CA March 25-28, 2002 It is widely recognized that site characterization and modeling are closely interconnected and that successful work in one requires thorough understanding of the other. The purpose of the Symposium is to bring together hydrogeologists, geologists, hydrologists and engineers collecting and analyzing field measurements or conducting lab experiments with those focused more on modeling. The Symposium will provide a forum for a dialog and exchange of ideas, which will enhance the ability of both groups to better describe and understand flow and transport processes in heterogeneous media. The Symposium aims also at promoting the dialog between researchers and practicing engineers and scientists. Organized by Co-Sponsors: Answers to Last-Minute Questions - Click Here Topics General Topics: Characterization of heterogeneous media Theory and application of upscaling methods With Applications in: Multi-phase processes in heterogeneous media

137. Barker, Lemar And Associates Environmental engineering for water, groundwater, soil, environment, environmental, civil works, landfill, remediation, solid waste, radioactive, nuclear, other. http://www.barkerlemar.com/

If you are reading this message you do not have Macromedia Flash installed properly in your browser. Flash installation instructions for more information. Click here to go skip the flash intro and go directly to our home page. West Des Moines, Iowa (Main Office) 1801 Industrial Circle West Des Moines, IA 50265 Phone: (515)256-8814 Fax: (515)256-0152 West Des Moines, Iowa (Drilling Operations) 1801 Industrial Circle West Des Moines, IA 50265 Phone: (515)256-8814 Fax: (515)256-0152 Quad Cities 4715 15th Street A Moline, IL 61265 Phone: (800)707-4248 St. Louis, Missouri 16 Municipal Drive Suite H Arnold, Missouri 63010 Phone: (636)287-3050 Fax: (636)287-1739

138. Solinst Groundwater Monitoring Instruments And Surface Water Monitoring Instrume High quality groundwater monitoring instruments and surface water monitoring instruments including water level measurement devices, groundwater samplers http://www.solinst.com/

on error resume next If MSDetect = "true" Then If Not(IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash"))) Then flashinstalled = 1 Else flashinstalled = 2 End If End If Compact, Simple Operation, Steady Flow Rates, Rugged pump has easy access controls Sampling rates as low as 40ml/min. Purge rates to 3.5L/min The Secret is in the TAPE! No other Water Level Meter on the market can offer the same accuracy and repairability as found in this rugged design. Home Products About Contact Us ... Peristaltic Pumps Solinst Canada Ltd. 35 Todd Rd. Georgetown, Ontario Canada Click here for a Map to Solinst Solinst High Quality Groundwater Monitoring Instruments Uses: Groundwater Monitoring Instruments are designed to obtain surface or ground water samples, continuous or manual water level measurements and recordings of concentrations of various water parameters. The data collected can be used to estimate hydraulic conductivity and other aquifer conditions; to monitor potable water recharge areas; and to monitor tailings ponds, dewatering activities and water supply levels of mines. Solinst equipment is used to monitor groundwater for general site investigations and for contaminant plume monitoring on: spill sites, remediation sites, chemical storage facilities, landfill sites and hazardous waste storage sites.

139. Schrader Environmental - Remediation Equipment Technologies And Rental groundwater and soil remediation equipment. Soil vapor extraction equipment, catalytic oxidizers, air strippers, carbon adsortion equipment. http://www.angelfire.com/mi2/schrader/index3.html

Schrader Environmental Services Remediation Equipment Technologies A link is provided for used and rental equipment page. Pictures and complete descriptions of equipment and rental units are provided. We specialize in rentals of dual phase extraction systems. Schrader Environmental is also a leading supplier for industrial air pollution control equipment in the State of Michigan. Please visit our Air Pollution Control Equipment website. Over 15 years experience in groundwater and soil remediation equipment and installations: Carbon Adsorption Equipment and Services Schrader Environmental - (Lansing, Michigan) Carbon system rentals available. Soil Vapor Extraction and Air Sparging Equipment SVE and Dual phase mobile system rentals available. Catalytic/Thermal Oxidation - Vapor Treatment Systems Schrader Environmental - (Ovid, Michigan) Air-Strippers Low Profile and air stripper tower sales and rental units.. Rentals and sales. Oil/Water Separators Coalescing and other separation technologies. Rentals available. Ultraviolet-light Enhanced Chemical Oxidation Solox, Inc. (Dallas, Texas)

140. Groundwater groundwater an unknown habitat. The River feeders. Learn more about the biology of the groundwater fauna in our slide show! Guiseppe http://www.uni-oldenburg.de/zoomorphology/Groundwater.html

Groundwater - an unknown habitat The River Styx is one of the five rivers in the underworld of Greek mythology and a synonym for all subsurface waters. In the past it was unknown that these waters are teeming with life. Only recently it was realised that groundwater is a habitat for a diverse fauna that evolved special features for life within the dark interstices between the grains of sand. Refering to the River Styx the invertebrates which spend their whole lifes in subsurface waters are called stygobionts . They are found not only in porous groundwater aquifers of river valleys but also in karstic areas where caves of different sizes may be found. Stygobionts are able to penetrate into man made habitats such as wells and slow sand filters The stygobionts show a remarkable set of morphological and physiological characteristics which can be interpreted as adaptations to life in groundwater. The most apparent insignia are the depigmented and vermiform body and the lack of eyes. Compared with related organisms in surface waters the stygobionts have very long lifes (15 times longer and some even more) and all developmental stages are prolonged.Their metabolism is reduced and the reproductive output is small compared with surface water organisms. But due to the long life span of stygobionts the absolute number of offspring may be similar to that of surface water organisms.

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