Updated April 10, 2016 -
The new solids thickening facility went online last October, with workers retiring the old gravity belt thickeners and supporting equipment. The last original primary clarifier sludge pump was recently replaced.
New aeration basins and secondary clarifiers are going through final testing, taking over treatment for existing facilities in March. This allows workers to begin demolition of the existing basins, and converting them to allow for the new DEMON, or de-ammonification, treatment processes the county studied in 2011.
Construction crews continue to make progress on two new anaerobic digesters at the plant, with the goal of bringing them both online later this year. The new structures nearly double the plant’s solids processing capacity. Additionally, construction of a new reclaimed water facility will provide treated irrigation water for Chambers Creek Properties.
Treatment plant staff are eagerly awaiting the completion of new offices, locker rooms, and warehousing facilities, allowing for offices currently scattered across the plant to be consolidated.
Overall, the plant expansion is about 80 percent complete. In total, more than 1 million man hours have been spent working on the expansion since the county broke ground in 2012.
Updated April 7, 2015 -
Construction is now over 50% complete and continues to move forward at a pace of approximately $7 million per month. For the past couple of years the 4 tower cranes were a large part of the construction site. The major equipment is now in place and most of the 60,000 cubic yards of concrete has been poured, the tower cranes will be taken down. With 300 construction workers there will still be a flurry of activity during 2015 to get some key components running and ready to start treating wastewater in the new facilities. While the site was dominated by concrete structures work it is now shifting to piping and electrical work necessary to tie the various existing and new facilities together. Once the new facilities are treating wastewater the construction focus shifts to the renovation of the existing plant.
The next major milestones include start-up of the new solids thickening facility in Spring-Summer 2015 followed by preparation for the new aeration basins start-up in late 2015.
Updated Aug. 20,2014 - The expansion project reached several milestones in the second quarter: