Newport Community Newsletter
April Update
In March, the contractor continued to work on the filtrate pump station and filter building. Over the course of the month, steel formwork for the first section of the cylindrical pump station structure was assembled on top a bed of cement stabilized sand, then concrete was poured. Once the concrete cured, an excavator was lifted and placed by crane inside of the concrete cylinder to excavate out the cement stabilized sand and soil to allow the structure to sink vertically into the ground. This method of pump station construction, known as cassion construction, is an alternative to traditional open cut excavation. Cassion construction minimizes the amount of excavation required to construct the pump station to the designed depths, accelerating the construction schedule and reducing worker safety risks.
Additionally, the contractor has begun work on the foundation of the filter building. They have excavated, placed steel form work, and poured concrete for the first of two underground concrete pipe trenches. In April, the contractor plans to complete the second and final section of the filtrate pump station and continue work on the filter building foundation.
