The $27 million King County South Treatment Plant (South Plant) project provides a seismic retrofit of the existing plant, which treats wastewater for approximately 839,000 people, 24 hours a day, 365 days a year. Because of its importance to the community, the goal of the retrofit is to prepare the plant for probable impacts of natural disasters. The precast concrete “Z” purlins at the pump building roof are also at risk of collapse during a significant seismic event. Based on a resiliency recommendations report, the pump building needs structural retrofits to improve seismic resiliency and to meet current building codes.
During the preliminary design phase, PMA provided risk analysis services. Staff developed a project risk register to identify and assess project risks — including threats (negative risks) and opportunities (positive risks) — and determined risks to be quantified, addressed, and managed (i.e., mitigation, avoidance, transfer of threats and enhancement, sharing, exploitation of opportunities). PMA determined the current risk profile of the project to allow King County to make informed decisions to save them time and cost (e.g., procuring long-lead items ahead of schedule).Overview
PMA Role