Wastewater Treatment Plants

El Portal Wastewater Treatment Plant

National Park Service
Yosemite National Park, California

Originally constructed in 1977, this plant needed improvements to meet the discharge standards, increase capacity, and to provide a more economical and environmentally conscious method of sludge disposal. JFSA was responsible for the structural engineering design and construction services of a new anaerobic digester tank.

Project Highlights:
El Portal Wastewater Treatment Plant
Metro Wastewater Digesters 11 and 12
Eagle Wastewater Treatment Plant

El Portal Wastewater Treatment Plant

National Park Service
Yosemite National Park, California

Originally constructed in 1977, this plant needed improvements to meet the discharge standards, increase capacity, and to provide a more economical and environmentally conscious method of sludge disposal. JFSA was responsible for the structural engineering design and construction services of a new anaerobic digester tank.

Project Highlights:

Metro Wastewater Digesters 11 and 12

Commerce City, Colorado

JFSA provided structural engineering design and construction services for this new facility. Numerous design challenges were overcome, including constructing the new facility within five feet horizontally and fourteen feet below an existing, in-service, structure. In addition, the basement pump room of the new service building was immediately adjacent to and ten feet below the heavily loaded digester tanks.

Project Highlights:
  • (2) new 100-foot diameter, 35 feet high anaerobic digester and associated service building
  • Foundation Design
  • Construction Services

Eagle Wastewater Treatment Plant

Eagle, Colorado

JFSA designed the replacement plant, including two 250,000-gallon aeration basins, two 36-foot diameter secondary clarifiers, sludge storage basins, chemical storage room, office, laboratory, and shop areas.

Project Highlights:
  • Plant Expansion
  • Structural Design
  • 4,000 SF Process Structure
  • Below Grade Elements
  • Steep / Narrow Mountain Terrain