FROM: Robert Thompson, General Manager
Originator: Mike Dorman, Director of Engineering
SUBJECT:
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REDHILL RELIEF SEWER RELOCATION AT STATE ROUTE 55, PROJECT NO. FE18-13
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
Approve a construction contingency increase of $464,730 (21%) to the existing construction contract with SRK Engineering, Inc. for Redhill Relief Sewer Relocation at State Route 55, Project FE18-13, for a total contract amount not to exceed $2,213,000 and a total construction contingency of $796,680 (36%), with all costs to be reimbursed by the Orange County Transportation Authority.
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BACKGROUND
The Orange County Transportation Authority (OCTA) is implementing the State Route 55 (SR-55) Improvement Project to widen SR-55 between Interstate 5 and Interstate 405. The Orange County Sanitation District (OC San) owns a sewer running under SR-55 immediately south of Warner Avenue in the City of Santa Ana that is affected by this widening project.
RELEVANT STANDARDS
* Maintain collaborative and cooperative relationships with regulators, stakeholders, and neighboring communities
* Protect OC San assets
PROBLEM
OCTA's SR-55 Improvement Project will widen the freeway over an existing OC San sewer. To protect the sewer, OC San must encase the sewer in the newly widened right-of-way and move an interfering manhole outside the freeway limits. Originally, OC San was scheduled to mobilize in November 2022 but was subsequently directed by OCTA to pause mobilization due to Southern California Edison's design and construction procurement delays. OCTA recently cleared OC San's contractor to mobilize after July 2024 and agreed to reimburse them for the delay costs. The 20-month delay costs exceed the original Board-approved construction contingency requiring staff to request additional contingency funds.
PROPOSED SOLUTION
Approve a contingency increase to the construction contract to cover the delay costs an...
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