Effects of Mining, Grazing, and Roads on Sediment and Water Chemistry in Birch Creek, Nevada
Assessment of the cumulative effects of mining and other land uses on water quality of Birch Creek showed that mine dumps and roads increased fine sediment deposits in some reaches. Fines...

Factors Affecting Neutron Gauge Calibration
Neutron gauge characteristics and soil chemistry affect gauge calibration. External factors also influence gauge calibration and should be considered in the calibration procedure. Gauge...

Variability of Copper in the International Reach of the Similkameen River, British Columbia
All total copper concentrations measured in soft water during spring freshets were above the Canadian Water Quality Guidelines. Approximately 57% of all 108 observations over the three-year...

Water Quality Modeling Using a Small Watershed Model (SWAM)
The Small Watershed Model (SWAM) is a state-of-the-art model that simulates the movement of water, sediment, and chemicals through a small, mixed-land-use watershed. It was developed to...

Estuarine Quality Use and Public Perception
Coastal environmental quality is determined on the basis of a relatively small number of biochemical and physical parameters which may bear little relation to the intended use of the water....

Use of Sediment Bulk Chemistry Data for Dredged Disposal Management in Puget Sound
Although no fully scientific approach for setting and interpreting sediment chemical levels is currently available, an effects-based approach for using bulk chemistry data was evaluated...

Special Water Treatment in New Jersey
The New Jersey Department of Environmental Protection (NJDEP) performed a study on 'special water treatment'. The main goal of the project was to assess in detail...

Toxicology and Chemistry of Metals in Urban Runoff
Water quality characteristics such as inorganic and organic ligands, pH, and water hardness will reduce the toxicity of metals through different chemical or physiological mechanisms. Increases...

Numerical Modeling of Groundwater-Lake Systems
Groundwater inflows can have important effects on the chemistry and biology of a lake ecosystem. For example, studies of lakes in Northern Wisconsin documented localization of ferromanganese...

Direct Filtration of Colored Water Supplies
The effects of raw water quality, chemical treatment, and filtration variables on the performance of direct filtration are examined. Cationic polyelectrolytes as sole coagulants are effective...

Re-Engineering Wastewater Treatment

Are Engineers Happy People?
Job satisfaction for the professional engineer is discussed in relation to society's image of the engineer and the engineering profession. It is argued that society has a...

Suspended Sediment Chemistry and Surface Mining

Survey of Errors for Estimating Water and Chemical Balances of Lakes and Reservoirs

Toxic Chemicals in Water -- An Apprasial of Regulatory Programs in the Southeast

Water Chemistry in a Permafrost Environment

If Your City's Well Water Has Chemical Pollutants, Then What—
Synthetic organic chemicals, especially certain solvents, are showing up in groundwater all over the U.S. and in many other industrial countries as well. These substances, some of which...

Stopping Water with Chemical Grout
New chemical grouts are now available to repair sewer leaks, control groundwater movement, and stabilize incompetent soils. Some of these grouts came into being only after the American...

Multiple-Tap Column Design for Adsorbents
Extensive research programs have been undertaken to determine the mechanism for the removal of trace organic chemicals from drinking water by adsorbent, eg., granular activated carbon...

Electro-Osmosis Chemistry and Water Quality
Electro-osmosis (E-O) is an effective method for stabilizing fine grained soils; the process has been used for man years for stabilizing cut slopes and embankments, and for dewatering...

 

 

 

 

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