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Mill Creek Reservoir, Salem, OR
Westech Engineering


Structural design of 2.2 million gallon cast in place concrete reservoir with vertical and wrapped pre-stressed reinforcement.  Overall dimensions are 140’ diameter x 22’-3” high.

Sweet Home, OR Water Treatment Plant
Westech Engineering


Structural design of a 586 SF CMU pump building that was tied to the raw water intake off of Foster Dam.  Treatment building is a PEMB structure of approximately 14,640 SF and is partially buried in a hillside.  It includes a 2,880 SF mezzanine housing the control room, electrical room, conference room, office, locker room and observation deck.  Under the building’s floor slab is a 450,000 gallon cast in place concrete Clearwell for chlorination of the filtered water.  This project also includes two 8,890 SF concrete backwash ponds constructed adjacent to the treatment building.  This system can treat up to 4,000 gallons per minute with the three existing filters and has the ability to be expanded up to five filters.

Winston - Dillard
Water Treatment Plant
Winston, OR
Erwin Consulting Engineering


Structural design of 10,015 SF water treatment building with a 50,000 gallon under-building cast in place concrete Clearwell.  This building is a PEMB structure with CMU Walls.  Design also included a 672 SF CMU Pump Building and concrete foundation for a pre-fabricated steel reservoir.

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