Construction of Gundagai’s Sewerage Treatment Plat (STP) is progressing according to the detailed plans put in place for the facility. The contractor Precision Civil Infrastructure Pty Ltd were awarded the contract in June and are now taking on the construction of the 3000 EP capacity treatment plant. The new plant will meet projected load increases over the next 30 years. The new biological treatment is based on the Intermittently Decanted Extended Aeration (IDEA) treatment process, to which micro-organisms contained within the sewage treatment process, aid to break down organic matters. Management of the treated effluent continues via the existing effluent reuse system with remaining excess (if any) to discharge into the Murrumbidgee River.
Much of the preliminary ground works were completed and undertaken by Cootamundra-Gundagai Regional Council (CGRC) staff and local contractors.
The new STP be positioned above the 1 in100-year flood level and will accommodate population growth in Gundagai expected over the next 30 years. The new plant will meet NSW EPA requirements for effluent reuse and environmental discharge into sensitive waters.
Photos and captions:
Overhead photos of the STP site show the massive earthworks that have been undertaken to accommodate the new treatment plant, above the 1 in 100-year flood level.