FROM: James D. Herberg, General Manager
Originator: Kathy Millea, Director of Engineering
SUBJECT:
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SUPPORT BUILDINGS SEISMIC IMPROVEMENTS AT PLANT NO. 1, PROJECT NO. P1-137
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
A. Approve a Professional Design Services Agreement with Simpson Gumpertz & Heger Inc. to provide engineering services for Support Buildings Seismic Improvements at Plant No. 1, Project No. P1-137, for an amount not to exceed $1,900,000; and
B. Approve a contingency of $190,000 (10%).
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BACKGROUND
As part of the General Manager's Workplan in FY 2017/2018, a commitment was made to enhance the reliability of Orange County Sanitation District (OC San) infrastructure. To address seismic resilience of our treatment facilities, the Seismic Evaluation of Structures at Plant Nos. 1 and 2, Project No. PS15-06 was conducted. This study evaluated the performance of our process facilities and support structures during a significant seismic event. Project No. PS15-06 initiated a facility-wide seismic upgrade program to address the Climate and Catastrophic Event Resilience Policy in OC San's 2021 Strategic Plan, providing a means to prioritize various seismic mitigation projects that will be implemented over the next 20 years as part of the overall CIP Program.
The findings of this study identified multiple staff-occupied buildings at Plant No. 1 with deficiencies that would limit the safety or immediate occupancy performance of the structures. Based on an evaluation of likelihood and consequence of failure, these occupied structures were given a high priority for remediation as part of OC San's ongoing seismic resilience program. The buildings that are being considered for rehabilitation under this project include: the Auto Shop; Control Center; Buildings A, B, 3, 5, and 6; and the Warehouse.
RELEVANT STANDARDS
* Maintain and adhere to appropriate internal planning documents (Seismic Evalua...
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