FROM: James D. Herberg, General Manager
Originator: Rob Thompson, Assistant General Manager
SUBJECT:
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MANHOLE FRAME AND COVER REPLACEMENT SERVICES, SPECIFICATION NO. S-2019-1055BD
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
Approve a contingency increase of $120,433 (approximately 31%) to the Service Contract with Ayala Engineering for Manhole Frame and Cover Replacement Services, Specification No. S-2019-1055BD, for the period November 1, 2020 through October 31, 2021, for a new total contingency amount not to exceed $178,966 (approximately 46%).
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BACKGROUND
The Orange County Sanitation District (OC San) collection system is comprised of 388 miles of pipe and more than 4,400 manholes. The manholes allow access to the pipe network for cleaning and maintenance. The manholes are subject to corrosion and mechanical wear due to vehicular traffic or hydraulic forces in drainage courses.
Many of these manhole frames and covers are in public right-of-way streets. Street maintenance is by others. OC San is obligated to adjust the frames and covers to match new street elevations whenever the local city or county agency repaves the surrounding street.
The current authorized contract amount for the Manhole Frame and Cover Replacement Services is $390,220, plus the $58,533 (15%) contingency, for November 1, 2020 through October 31, 2021. The contractor has provided good service to date.
RELEVANT STANDARDS
* Operate and maintain facilities to minimize impacts on surrounding communities, including odor, noise, and lighting
* Protect OC San assets
* Commitment to safety & reducing risk in all operations
PROBLEM
Local street maintenance was greater than anticipated this year. The current funding is exhausted with five months remaining in the current contract period, and there is a backlog of approximately 40 manholes that need replacing.
PROPOSED SOLUTION
Approve a contingency increase of $120,433 to the Serv...
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