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  Storage/Sedimentation Facilities for Control of Storm and Combined Sewer Overflows, Design Manual (208 pp, 11.5 MB) (EPA/600/R-98/006) 1998

This manual describes applications of storage facilities in wet-weather flow management and presents step-by-step procedures for analysis and design of storage-treatment facilities. Retention, detention, and sedimentation storage information is classified and described. International and national state-of-the-science projects are discussed.

Retention storage facilities capture and dispose of storm water runoff through infiltration, percolation, and evaporation. Detention storage facilities temporarily store storm water runoff or combined sewer overflow. Stored flows are subsequently returned to the sewerage system at a reduced rate of flow when downstream capacity is available, or the flows are discharged to the receiving water with or without further treatment. Sedimentation storage facilities alter the wastewater stream by gravity separation. The storm water runoff and combined sewer overflow must be characterized to estimate the efficiency of any sedimentation basin.

The detailed design methodology of the storage or sedimentation facility presented in this report includes:

  • Identifying functional requirements
  • Identifying site constraints
  • Establishing basis of design
  • Selecting a storage or treatment option
  • Conducting a cost analysis


Richard Field

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