Dworshak Dam

Green Water successfully accomplished HVAC upgrades, conducted architectural and structural steel fabrication, hazardous material handling, demolition, and new construction at a secure, remote dam in northern Idaho.

Work consisted of the complete demolition of the original (early 1970s) powerhouse HVAC system and the installation of an entirely new HVAC system-including sheet metal, air handling units, electric duct heaters, supply and exhaust fans, louvers, dampers, chilled water piping and pumps, water softeners, reverse osmosis systems, etc. Architectural work included new acoustical ceilings, new fire doors, new vinyl composition tile (VCT) flooring and the construction and repair of interior walls and finishes.

Custom duct work fabrication and installation.

Other work included Digital Controls (DDC), HVAC commissioning, HVAC distribution systems including exhaust and ventilation; testing, adjusting and balancing (TAB); fire extinguisher installation, painting, framing, structural steel fabrication and installation.

We employed an Industrial Hygienist to supervise and plan, lead, and regulated heavy metals demolition. We also employed a Quality Control Manager and a Site Safety and Health Officer (SSHO) throughout the entire contract. The facility was occupied during construction and contained highly sensitive equipment. Our strict quality control procedures ensured adequate temporary heating and cooling was in place at all times, as well as stringent dust control and security procedures. Due to government funding delays, the project was started six months late. Despite that, we finished the project early and on budget. [Green Water prepared a three week look-ahead schedule every week to review with the owner and subcontractors to anticipate issues or other hurdles.] We proactively notified the owner of any pending changes and all facility owner directed changes were addressed prior to the specified response time.

Customer Relationships

The USACE was “Very Satisfied” with our performance on this project and have subsequently been directly awarded – via the 8(a) program- an additional project at this facility.

Benefit to Walla Walla District, USACE

Green Water provided numerous value engineering design changes throughout the project and assisted USACE in multiple HVAC redesigns. These changes provided a reduction in engineering staff that USACE would normally have had to provide to design and engineer the necessary changes.

Project Details

Year: 2016
Contract Number/Identifier: US Army Corps of Engineers (USACE) W912EF-15-C-0033
Location: Dworshak Dam, Ahsahka, ID