NREL NWTC Site Improvements
Construction:
Start: January 2017
Completed: April 2020
Contract Price:
Initial: $3,153,925
Change Orders: $3,605,163*
Final: $6,759,088
* Owner Requested Additive Scope & Phases
Delivery Method:
Hard Bid | Fixed Price
Reference:
NREL
Kiley Taylor (303) 275-4631
NREL
Project Leader
Brian Cox (303) 384-7375
Design Team:
Martin Atwell
NREL Site Operations
Project Description:
This was a multifaceted, multi-phased project that included civil improvements such as site drainage and paving, a new salt storage pad, demolition and replacement of a 24” thick concrete slab at the 5 MW Dyno Building, extended sewer, gas, fire water lines and hydrants, and asphalt paving. In addition, there were three phases of new electrical service work including the Phase 1 Substation and Power Transformer T1 115kV with 1.5 miles of new underground feeder lines to feed electrical service for the entire 325 acre campus. Phase 2 doubled the substation size adding another T2 115kv Transformer and associated bus. Phase 3 was over 1.5 miles of 115kV Transmission lines.
Project Challenges:
The campus does not have water sources other than what is brought in by NREL for its use.
All contractors imported water for construction use for the duration of the project. The ground in this area is extremely rocky, making it challenging to drill concrete piers.
Project Accomplishments:
Sun successfully executed the lift of a 120,000 lb switch gear building and installed over 40 concrete piers up to 8′ in diameter and 22′ deep.