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Environ-Civil Engeneering, Ltd.
Project Name Seneca Wastewater Treatment Plant UV Disinfection
Owner Washington Sanitary Suburban Commission
Project Location Germantown, Maryland
Construction Cost $1,124,209
Duration 8/04 - 3/06

ECE provided construction monitoring during the construction of the Ultra violet disinfection. 

The construction was to upgrade the existing chlorination disinfection system to an ultraviolet disinfection system, and it involved demolition/modification of the existing tertiary facility chlorination/dechlorination system.

Monthly construction monitoring report was prepared throughout the duration of the project and submitted to Maryland Department of the Environment before payment to the general contractor.


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ECE reviewed change orders submitted by the contractor. Construction activities performed at the facility are as follows:

  • Stage 1 Demolition

  • Underdrains in tertiary

  • Electrical

  • Installation of level gate

  • Installation of Sluice gates

  • Install 18 NPW

  • Installation of Gate Thumbles

  • Installation of trusses and Canopy

  • Installation of Hand rail

  • Air Compressor system

  • Installation of UV equipment

  • Mason Wall

  • Construction of UV Channel

 

 

 

 

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