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RISModeling Water Table Mounding to Design Cluster and High-Density Wastewater Soil Absorption Systems
Publisher: American Society of Civil Engineers
Abstract: Water table mounding warrants consideration in the design of cluster and high-density wastewater soil absorption systems (WSAS). Use of iterative analytical solutions with the design approach presented here provides a ...
On-Site Wastewater Systems and Interactions with the Environment
Publisher: American Society of Civil Engineers
Contaminant Mass–Removal Behavior during Chemical Oxidation in a Three-Dimensional, Fractured Sandstone Network Experiment
Publisher: ASCE
Abstract: A three-dimensional (3D) bench-scale, low-porosity fractured-sandstone network experiment was used to evaluate the behavior and effectiveness of in situ chemical oxidation (ISCO) using potassium permanganate (KMnO4) to ...
Characterization of Bulk Fluid and Transport Properties for Simulating Polymer-Improved Aquifer Remediation
Publisher: American Society of Civil Engineers
Abstract: In situ mobility reduction resulting from the addition of water-soluble polymers to subsurface remedial fluid formulations has the potential to significantly improve the delivery and subsurface distribution of remediation ...
Groundwater Mounding in the Vadose Zone from On-Site Wastewater Systems: Analytical and Numerical Tools
Publisher: American Society of Civil Engineers
Abstract: On-site wastewater systems (OWS) provide a sustainable method for disposing of residential wastewater. Large “cluster” OWS systems are now frequently being used to serve multiple-unit housing developments. Groundwater ...
Watershed-Scale Impacts of Nitrogen from On-Site Wastewater Systems: Parameter Sensitivity and Model Calibration
Publisher: American Society of Civil Engineers
Abstract: A numerical watershed model was used to evaluate the potential influence of various point and nonpoint sources including on-site wastewater systems (OWS) on stream nitrate concentration in Turkey Creek Watershed, Colorado. ...
Reading the Green Landscape: Public Attitudes toward Green Stormwater Infrastructure and the Perceived Nonmonetary Value of Its Co-Benefits in Three US Cities
Publisher: ASCE
Abstract: Green stormwater infrastructure mirrors natural hydrologic processes and is presented as an alternative or complement to traditional gray stormwater infrastructure, which uses concrete channels and pipes to convey flows ...
Incorporating a Multiple-Benefit Analysis into a Stormwater Decision-Support Tool at Planning Level
Publisher: ASCE
Abstract: As we move into an era of increased urbanization, stormwater practitioners are charged with creating multibenefit solutions through the installation of stormwater control measures (SCMs). Two drivers facilitate the accrual ...
Steady State DNAPL Dissolution in Three-Dimensional Fractured Sandstone Network Experiments
Publisher: American Society of Civil Engineers
Abstract: The distribution of residual dense nonaqueous phase liquid (DNAPL) in the subsurface plays a critical role in the DNAPL dissolution kinetics. However, measuring residual DNAPL at the field scale in fractured bedrock settings ...
Assessment of Chemical Oxidation for Treatment of DNAPL in Fractured Sandstone Blocks
Publisher: American Society of Civil Engineers
Abstract: Laboratory experiments were performed in discretely-fractured sandstone blocks to evaluate the use of chemical oxidants to treat residual dense nonaqueous phase liquid (DNAPL) tetrachloroethene (PCE). Persulfate (chelated ...