Mitigation of Excessive Wastewater Infiltration/Inflow Effects for US Army Installations
Wastewater collection system on military installations require periodic maintenance and repair, and occasionally upgrading. Deterioration of wastewater systems enables the entry of extraneous...
Proposed Storm Water Management Programs: An Opportunity for Coastal Municipalities to Improve Water Quality
On November 16,1990, the Environmental Protection Agency (EPA) promulgated a final regulation establishing National Pollutant Discharge Elimination System (NPDES) permit application requirements...
Short-Term Effects of the Banjul Sewerage and Drainage Project on Faecal Coliform Counts
Assessment of the short-term effects of the Banjul sewerage and drainage project on faecal coliforms (indicator organisms for contamination of pathogens) in the coastal areas. The project...
Combined Sewer Overflow Abatement by Means of Detention Basins and Stormwater Infiltration
The conventional approach to abate the pollution loads from combined sewer overflows (CSO's) is to include detention basins. The same reduction in CSO loads may be obtained by infiltrating/percolating...
Storm Sewer Analysis & Design Utilizing Hydrographs
In this paper a computer model, designated STORM.HYD, for the analysis and design of storm sewer systems utilizing a hydrograph procedure is presented and discussed. This model which actually...
Sacramento Drainage Manual?Hydrologic Procedures
For a period of over two years, HDR Engineering, Inc. (HDR) and HYDMET have been working with the City and County of Sacramento to develop a Drainage Manual. This Manual contains seven...
Implementation of Storm Water Management Programs in the California Land Development Process
One of the most powerful and encompassing tools for introducing storm water management programs to land development is through California's general plan process. California cities and...
Nitrogen and Phosphate in Vadose Waters in Heber Valley
During the last decade best management practices have been gradually implemented in Heber Valley to maintain and enhance the qualities of surface waters that flow into Deer Creek Reservoir....
Case History: 100-Year Flood Event in San Francisco
San Francisco experienced a 100-year storm in the winter of 1981-2. This is a report of the flooding damage from this event and the actions that the City took to resolve the flooding problems....
Dam Safety Modifications for Clear Creek Dam Manuscript for ASCE Hydraulics Division 1993 National Conference on Hydraulic Engineering
Clear Creek Dam, an unsafe thin arch dam, was stabilized by constructing a concrete gravity buttress on the downstream face. During the Bureau of Reclamation's (Reclamation) Safety Evaluation...
Shape Effect on Bed-Load Transport in Pipes
The nature of part-full flows in pipe sewers produces different channel shapes resulting in non-uniform shear stress distribution on the wetted perimeter. New experimental data were utilized...
A Finite-Difference Model for 3-D Flow in Bays and Estuaries
This paper describes a semi-implicit finite-difference model for the numerical solution of three-dimensional flow in bays and estuaries. The model treats the gravity wave and vertical...
Microtunneling with PVC Pipe
PVC is a suitable and economical product for sewer system construction. However, in the past, utilization of PVC sewer pipe in microtunneling was impossible due to axial thrust load limitations...
Flow Study of In-Service Sanitary Sewers Rehabilitated with Insitupipe
In an effort to define the flow characteristics of sanitary sewer segments rehabilitated with Insituform under normal in-service conditions, Insituform of North America, Inc. (currently...
Joint Outfall H Relief Trunk Sewer System
The Joint Outfall 'H' Relief Trunk Sewer System consists of the construction of 11.3 kilometers (7 miles) of polyvinyl chloride lined reinforced concrete pipe varying in diameter from...
Concrete Pipe for Sanitary Sewers Corrosion Protection Update
Significant advances have been made in the last decade in the area of sanitary sewer design techniques. Some of the most important advances have been in the prediction and prevention of...
Caustic Spray for Sewer Crown Corrosion Control
A novel method to control sewer crown corrosion which involves spray application of a caustic solution to the sewer crown is described. Corrosion control using this concept is based on...
Management of Sewer System Rehabilitation for the Overflow Abatement Program in Nashville, Tennessee
To comply with a state order to abate overflows of wastewater from the sanitary sewerage system, the Nashville, Tennessee, Metropolitan Department of Water and Sewerage Services has undertaken...
Predictive Model Aids in Development of Systemwide Rehabilitation Program
Effective management of urban infrastructure requires accurate assessment of system-wide condition. Working with the City of San Jose, CH2M HILL has developed a computer model to provide...
Proactive Odor Control Using Computer Modeling
The City of Los Angeles (City) is currently designing the East Central Interceptor Sewer (ECIS) as a major relief sewer. The pipeline will convey wastewater flows that originate upstream...
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