Contaminant Fate and Transport Model in Pool-and-Riffle Streams
The complex nature of solute transport and transformation processes in natural streams has been investigated using numerical solution of a proposed mathematical model. This model is based...
A model to describe the fate of agricultural pollutants
The distributed parameter hydrological model CEQUEAU is coupled to nitrogen and pesticide sub-models to study agricultural non-point pollution at the watershed level. This developing tool...
Lake Michigan Diversion at Chicago
Water has been diverted from Lake Michigan to the Mississippi River basin beginning with the construction of the Illinois and Michigan Canal in 1848 to serve navigation needs. During the...
Interfacing GIS and Water Quality Models for Agricultural Areas
Agricultural activities significantly impact water quality, including increases in stream sediment, nutrients, pesticides, and salt concentrations from runoff. South Florida is unique...
Third Lake Watershed Assessment and Action Plan
Third Lake, located in Lake County, Illinois, is expected to exhibit worsening inlake water quality as development occurs within its watershed. A geographic information system (GIS) application...
Regional Optimization of Non-Point Source Load Reduction
The paper reports the results of a study to develop a regional optimization model to determine pollutant load reduction strategies for Tampa Bay. The study aims to determine cost-effective...
Predictability and Sensitivity of Groundwater Transport Models
The uncertainty associated with predictions made by solute transport models in groundwater environments must be carefully evaluated to address spatial and time variability as well as data...
Monitoring Petroleum Contamination in an Aquifer
An experimental study of the behavior of petroleum in an aquifer with static and changing water depths were studied. The experimental apparatus consisted of plexiglass tanks filled with...
Groundwater Remediation at a Superfund Site
Soil and groundwater contamination at the Montana Post & Pole site in Butte, Montana, one of the nation's oldest Superfund sites, has developed into one of the most significant...
Fate/Transport Modeling and Remediation of Contaminated Plume at Vance Airforce Base
Air Training Command (ATC) at Vance Air Force Base (VAFB) is responsible for implementing the Installation Restoration Program (IRP) according to the Comprehensive Environmental Response,...
Estimation of Field Site Flow Parameters
The paper reports on the use of Kriging to obtain estimates of hydraulic conductivity underneath a rapid infiltration site. The parameters obtained were used in a two-dimensional groundwater...
An Attempt of an Aquifer Model with Lack of Data
The University of the Americas in Cholula, Puebla, Mexico withdraws water from an unconfined aquifer. Also the city of Cholula and the city of Puebla withdraw water too. A model aquifer...
Movement of Colloids Under Hydraulic Gradients
A model was developed for analyzing the movement of colloidal clay particles in laboratory soil columns. The physical mechanisms of detachment of particles from the soil matrix, their...
Mixing of Thermal Discharges at Low Froude Numbers
A study was performed to develop an optimum configuration for the discharge canal of a cooling lake. The objective was to minimize the initial mixing at the end of the discharge canal,...
Modeling Hydrologic and Pollutant Transport Processes for Stromwater Runoff to Surface Waters
Combined sewer overflows and stormwater discharges, which are considered point sources, and certain nonpoint sources (NPSs) display the characteristics of precipitation-driven events....
General Urban Runoff Model for Water Quality Investigations
This paper presents and examines a general urban runoff model appropriate for water quality studies. The model is applied to separate runoff source areas and the outfall conditions are...
Coping with EPA's Transportation Storm Water Permit
EPA has released NPDES storm water monitoring data from group applicants. This paper will analyze the data to determine which pollutants are present in storm water runoff from transportation...
NPDES Storm Water Permit Compliance at Air Force Installations
Recent changes to the National Pollutant Discharge Elimination System (NPDES) program require that storm water discharges associated with industrial activity be regulated under the NPDES...
Combined Stormwater Drainage and Treatment
Due to continuing public concern regarding environmental protection for the nation's waterways, new and more stringent water quality control regulations have been developed. This is most...
Costs and Benefits of Meeting the San Francisco Bay Copper Objective by Regulating Small Treatment Plants
Metals in aquatic environments, even in very small amounts, are of concern because of potential toxicity to aquatic life forms. Copper is of particular concern in the San Francisco Bay...
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