FROM: James D. Herberg, General Manager
Originator: Kathy Millea, Director of Engineering
SUBJECT:
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INTERSTATE 405 WIDENING PROJECT IMPACTS ON OCSD SEWERS, PROJECT NO. 3-66
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
A. Approve the First Amendment to Utility Agreement No. UK204650, between the Orange County Sanitation District and the Orange County Transportation Authority for Interstate 405 Widening Project Impacts on OCSD Sewers, Project No. 3-66; and
B. Approve the First Amendment to Utility Agreement No. UK201113, between the Orange County Sanitation District and the Orange County Transportation Authority for Interstate 405 Widening Project Impacts on OCSD Sewers, Project No. 3-66.
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BACKGROUND
The Orange County Transportation Authority (OCTA) is widening Interstate 405 (I-405) between State Route 73 and Interstate 605. This work has the potential to impact the Orange County Sanitation District's (OC San) sewers. In June 2017, OCTA and OC San approved Utility Agreements that arranged for OC San's review of OCTA's plans to verify facilities would be adequately protected, allowed OC San to inspect the relevant work, and set the basis for OCTA to compensate OC San for their costs. At OCTA's request, eight separate Utility Agreements were created to cover different segments of the I-405 widening.
OC San's costs for this project are charged to Interstate 405 Widening Project Impacts on OCSD Sewers, Project No. 3-66, for later billing to OCTA.
RELEVANT STANDARDS
* Protect OC San assets
* Maintain collaborative and cooperative relationships with regulators, stakeholders, and neighboring communities
PROBLEM
In May 2021, OCTA's contractor damaged OC San sewers at two separate locations. At one of the locations, an upstream diversion prevented a spill. At the other location, OC San had to divert around the damaged section using pumper trucks for three days until the damage was repaired.
Respo...
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