Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Using GIS to Prevent Sanitary Sewer Overflows and Comply with CMOM Requirements
The Environmental Protection Agency (EPA) recently estimated that between 23,000 and 75,000 sanitary sewer overflows (SSOs) occur each year in the United States, resulting in releases of between three to ten billion gallons of untreated wastewater. Most SSO events are caused by sewer blockages, while most SSO volume appears to be related to events caused by wet weather and excessive inflow and infiltration. SSOs have a variety of causes, including blockages, line breaks, sewer defects that allow inflow and infiltration (I/I), lapses in sewer system operation and maintenance, inadequate sewer design and construction, power failures, and vandalism. The microbial pathogens and other pollutants present in SSOs can cause or contribute to water quality impairments and other environmental and human health problems. With limited budgets to rehabilitate and/or replace existing collection system deficiencies, it is important that municipalities and agencies prioritize segments of the collection system from most critical to least critical and develop short and long-term capital improvement plans based on this prioritization. Through a case study of an SSO evaluation conducted at a military facility in Southern California, the use of off-the-shelf GIS software was used as a tool to conduct a comprehensive risk-based SSO evaluation of a collection system. This risk based evaluation provides a cost-effective method to help municipalities and agencies identify areas within their collection system that are at greatest risk for sanitary sewer overflows, prioritize deficiencies, and then plan for short and long-term rehabilitation and/or replacement options. Conducting this evaluation will also help municipalities and agencies comply with their NPDES permits and applicable Capacity, Management, Operation, and Maintenance (CMOM) requirements and/or guidelines.
Using GIS to Prevent Sanitary Sewer Overflows and Comply with CMOM Requirements
The Environmental Protection Agency (EPA) recently estimated that between 23,000 and 75,000 sanitary sewer overflows (SSOs) occur each year in the United States, resulting in releases of between three to ten billion gallons of untreated wastewater. Most SSO events are caused by sewer blockages, while most SSO volume appears to be related to events caused by wet weather and excessive inflow and infiltration. SSOs have a variety of causes, including blockages, line breaks, sewer defects that allow inflow and infiltration (I/I), lapses in sewer system operation and maintenance, inadequate sewer design and construction, power failures, and vandalism. The microbial pathogens and other pollutants present in SSOs can cause or contribute to water quality impairments and other environmental and human health problems. With limited budgets to rehabilitate and/or replace existing collection system deficiencies, it is important that municipalities and agencies prioritize segments of the collection system from most critical to least critical and develop short and long-term capital improvement plans based on this prioritization. Through a case study of an SSO evaluation conducted at a military facility in Southern California, the use of off-the-shelf GIS software was used as a tool to conduct a comprehensive risk-based SSO evaluation of a collection system. This risk based evaluation provides a cost-effective method to help municipalities and agencies identify areas within their collection system that are at greatest risk for sanitary sewer overflows, prioritize deficiencies, and then plan for short and long-term rehabilitation and/or replacement options. Conducting this evaluation will also help municipalities and agencies comply with their NPDES permits and applicable Capacity, Management, Operation, and Maintenance (CMOM) requirements and/or guidelines.
Using GIS to Prevent Sanitary Sewer Overflows and Comply with CMOM Requirements
Schaedler, Nathan J. (Autor:in)
World Water and Environmental Resources Congress 2005 ; 2005 ; Anchorage, Alaska, United States
01.07.2005
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Hydraulics , Hydrology , Wastewater management , Geographic information systems , International factors , Water distribution systems , Groundwater management , Wetlands , Water resources , Water management , Water supply , Watersheds , Stormwater management , Sanitary sewers , Environmental Protection Agency , Overflow , Irrigation , Climate change
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