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: Recommend to the Board of Directors to:
Approve a construction contingency increase of $531,120 (24%) to the existing Construction Contract with SRK Engineering, Inc. for Redhill Relief Sewer Relocation at State Route 55, Project No. FE18-13, for a total contract amount not to exceed $2,213,000 and a new total construction contingency of $1,327,800 (60%), 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. 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.
RELEVANT STANDARDS
* Maintain collaborative and cooperative relationships with regulators, stakeholders, and neighboring communities
* Protect OC San assets
PROBLEM
OC San's contractor, SRK Engineering, Inc. (SRK), was originally 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. Southern California Edison completed their construction of the interfering utilities and OCTA cleared SRK to mobilize after July 2024 while agreeing to reimburse OC San for associated delay costs.
A few days after mobilizing in October 2024, SRK discovered two utilities that were in direct conflict with the new sewer alignment. One was a Caltrans electrical line that...
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