Comparison of Worst-Case and Probabilistic Approaches to Ocean Outfall Mixing Zone Analysis

by Hening Huang, (A.M.ASCE),
Robert E. Fergen,

Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water


Two approaches have been used for ocean outfall mixing zone analysis: worst-case approach and probabilistic approach. This paper discusses some advantages and disadvantages of the worst-case approach vs. probabilistic approach. A case study is presented of the Broward ocean outfall located off the east coast of South Florida. The case study addresses the mixing zone for total residual chlorine (TRC). Effluent TRC limits are developed using both of the worst-case and probabilistic approaches. The probabilistic approach permits a less stringent effluent TRC limit than the worst-case approach.

Subject Headings: Probability | Ocean engineering | Case studies | Comparative studies | Effluents | Chlorine | Permits | Sewers | Florida | United States

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