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Integrated Water Quality Security System (IWQSS) William B. Samuels and Rakesh Bahadur Science Applications International Corporation June 27, 2002
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Need Two approaches for water utility security Upgrade Infrastructure Costly Long Process Partial Protection Upgrade Preparedness Substantial & Rapid gains Bolster security and response while Infrastructure is being Improved
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Purpose Develop an Emergency Response Tool Assess the population at risk Determine which Intakes and water treatment plants are impacted Develop a risk reduction strategy Design Criteria Minimum manual interaction Minimum input data required for modeling Tabular and graphical output
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Integrated Water Quality Security System (IWQSS) Treatment System Surface water Water Intake Distribution System IWQSS Water Treatment Process (WTP)
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IWQSS Advantages Comprehensive approach to water quality security Analyze effects in raw water : upstream of the intake of a water supply system at the water intake Analyze effects at the treatment plant Analyze effects in finished water At a service reservoir At a point in the distribution system
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Scope of IWQSS Water Treatment Processes Constituents of Concern RiverSpill PipelineNet IWQSS Utility specific US wide
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Constituents of Concern Information Sources 42 CFR part 72 – biological agents USAMRIID - CWA Dr. Deininger – SAIC consultant
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RiverSpill Module Emergency response tool for fate and transport of contaminants Uses real-time stream flow data Operational for US
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RiverSpill Design Principles Develop national-scale model framework for emergency response capable of performing hydraulic transport routing and connectivity of surface waters Uses best available national-scale data Address the needs of a broad user community
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RiverSpill Architecture
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System Components ArcView 3.2 Network Analyst 1.0 Databases Enhanced Reach File (EPA, USGS) USGS Real Time Stream Flow Public Water Supplies (EPA)
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RiverSpill Operation Location of incident Fate and transport of contaminant to the nearest intake Identify the population served by the water treatment plant.
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RiverSpill Users and Applications Users Federal, State, & Local government agencies Water Utilities Applications Planning Exercises Response to Accidental & Deliberate Acts
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Flow Predictions - How well does it work ?
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Travel Time Skill Assessment - observations 1 vs. model calculations 1 Jobson, 1996, Prediction of Travel time and Longitudinal Dispersion in Rivers and Streams, USGS Report 96-4013 Rivers Analyzed
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Effectiveness of Water Treatment
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Process Efficiency
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Percent Removal
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PipelineNet Module Module components EPANET hydraulic model EPANET Toolkit ArcView GIS
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PipelineNet Architecture
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PipelineNet Operation Hydraulic simulation Water quality simulation Concentration Water tracing Water ageing Calculation of population and infrastructure at risk
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PipelineNet Users and Applications Users Water Utilities Applications Normal operations Planning Exercises Response to Accidental & Deliberate Acts Operational Use Utah Olympic Public Safety Command Salt Lake City, Murray City, Provo, Park City
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Calibration Criteria Followed AWWA calibration guidelines Compared observed and simulated water level in the tanks
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Murray City Results
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PipelineNet
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IWQSS Summary Spill Location Model Fate and Transport Simulate Water Treatment Effectiveness Model Water Distribution Calculate Population and Infrastructure at Risk
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RiverSpill Output Putting It All Together
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