Gila Bend, AZ – The project entailed placement of over 21 miles of 230 kV electrical transmission poles. The transmission line runs between Abengoa’s Solana solar array 15 miles west of Gila Bend and APS’ Panda Substation. DBA’s scope of work included:
- Mass excavation
- Grading and drainage
- Best Management Practices (Stormwater Pollution Prevention Plan)
- Pipe culvert
- Irrigation pipe installation
The Solana Generating Station, a 280-megawatt concentrating solar power plant that, when completed, will be one of the largest solar plants in the world. The array is located at the northwest corner of Interstate 8 and the Painted Rock Dam exit about 70 miles southwest of Phoenix.
DBA’s scope of work included all earthwork which included clearing & grubbing each pole site to delineate the right-of-way for the transmission line and to prepare the ground for 110, 90-foot tall power poles. Haul roads were built along the entire corridor, 48 asphalt track-out pads were installed, earthen berms were established around each pole site to protect from flooding, and fencing was temporarily removed and replaced. Much of the land was owned by local farmers and in order to maintain crop irrigation, DBA was responsible for installing approximately 15 pipe culverts to divert irrigation water around each of the new pole sites. Three fields located at a lower elevation were seriously inundated with water and required dewatering in order to construct the new pole foundations and install the poles. DBA designed and constructed 3000’ of open-cut trenches and perforated pipe to dewater these fields. Additionally, DBA was contracted by Solana to install 70 LF of irrigation pipe for the Paloma Irrigation & Drainage District.