1. This project includes mechanical, electrical, well drilling, excavation, grading and seeding to install a geothermal ground loop heat exchanger to add (104) 120 ft deep vertical bores to the existing horizontal geothermal wellfield system. 2. The header piping on the existing horizontal well field is also to be replaced. The existing headers shall be removed, and new header piping installed in straight lines and then reconnected to the existing (150) ¾” supply and return lines from each horizontal bore. Before removing the header piping, the hydronic fluid shall be pumped from the system and cleaned for reuse. 3. The hydronic pumps serving the wellfield will also be replaced to account for the higher flow required for the expanded well field. The expansion tank serving the wellfield will also be replaced. The pumps will need to be disconnected and reconnected by an electrical contractor. 4. The design requires a phased construction approach in order to maintain heating and cooling systems that minimizes impacts to operations that exist within the facility. A licensed well driller is required to install the 104 geothermal bores and piping and replace the existing header piping on the horizontal well field to the existing vault. 5. After all the underground piping has been installed, tested, and inspected, the site will be graded and seeded.
