Rising to the Occasion
A parking garage fitted within a stormwater overflow reservoir is designed so that it rises out of the ground during storms as the reservoir fills with water....
The Best Alternative
The City of Portland, Oregon, is using a hybrid contracting scheme that combines the scheduling advantages of design/build with the control of a construction manager arrangement to construct...
The Case for Cleaning
When sanitary sewer systems overflow during heavy rainstorms, the crisis is often attributed to the sheer volume of water inundating the system. In many cases, however, the lines would...
Sewer (Asset) Inspection and Condition Assessment Tools Required, Benefits Realized and Lessons Learned
The Northeast Ohio Regional Sewer District (District) owns, operates and maintains a vast interceptor sewer system that serves the City of Cleveland and all or parts of 58 suburban communities....
Capacity, Management, Operations and Maintenance (CMOM) Overview
Attendees will have a better understanding of the new policy and the benefits of compliance. The purpose of the CSO Rule or CMOM by EPA is creating a wave of activity across the country....
An Aggressive I/I Abatement Program is Underway as Part of Vallejos Wet Weather Program
The Vallejo Sanitation and Flood Control District (VSFCD) is undertaking an aggressive pilot program to control wet weather flows and eliminate sanitary sewer overflows (SSOs) that are...
Equalizing Wet Weather Flows
Sanitary sewer overflows and combined sewer overflows can wreak havoc on communities by flooding basements, contaminating drinking water sources and recreational water bodies, and flowing...
Retrofitting CSO Infrastructure in New Haven, Connecticut
(No paper) The City of New Haven Water Pollution Control Authority operates a wastewater collection and treatment system which serves over 130,000 residents in the cities of New Haven,...
CSO Controversy
Under the Environmental Protection Agency's (EPA's) national combined sewer overflow (CSO) policy, more than 900 cities will no longer be able to discharge untreated...
Overflow Control
The city of Houston devised an innovative flow remonitoring effort that allowed engineers to modify or eliminate many planned overflow control facilities. Net construction savings topped...
CSO Planning Model Development and Verification Strategy
A model verification technique is described that uses modeled and monitored overflow occurrences defined in terms of the same long-term frequency statistics that are used to evaluate CSO...
The Integration of Receiving Water Impacts in the Evaluation Process of Alternative Designs for CSO Abatement in Providence, RI
The Providence, Rhode Island sewer system is undergoing a combined sewer overflow abatement program. One measure of the program's effectiveness is the reduction of water quality...
Modeling SSO's Resulting from Peak Conditions
Miami-Dade Water and Sewer Department (MDWASD) is undertaking the installation and maintenance of a computerized collection and transmission model and peak flow management study. Through...
Preparation of Notification Models Using Continuous Modeling Techniques
Public health departments in many states now require that operators of collection systems notify them of discharges from combined sewer systems soon after these events occur. This allows...
SOS For Small-Town SSOs
No matter why a small town confronts its sanitary-sewer-overflow problems, solutions are bound by the town's own resources. For two Midwestern towns, hindsight shows that...
Hydraulic Design of Spillways
Technical Engineering and Design Guides, as adapted from the U.S. Army Corps of Engineers, No. 12. This manual presents guidance for the hydraulic...
A Texas-Sized SSO Solution
Houston is under the gun to control chronic overflows in its sanitary-sewer-collection system--a wet-weather problem that has plagued the city for years. For a problem this massive, the...
SCADA System Controls Combined Sewer Overflow Regulation System to Optimize Wastewater Collection
The Metropolitan St. Louis Sewer District's Overflow Regulation System (ORS) project uses computer control of a wastewater collection system for the purpose of combined sewage overflow...
Overflow Elimination Benefits from GIS Based Technology
Elimination of wet weather overflows through the rehabilitation of infiltration and inflow defects requires careful analysis of the collection system. The integration of geographic information...
Risk Analysis: Wet Weather Flows in S.E. Michigan
Institutional aspects of risk analysis are examined in two separate activities in the state of Michigan. The state of Michigan's relative risk project, patterned after the U.S. EPA's risk...
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