FROM: Robert Thompson, General Manager
Originator: Mike Dorman, Director of Engineering
SUBJECT:
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COLLECTIONS YARD RELOCATION AND WAREHOUSE DEMOLITION AT PLANT NO. 2, PROJECT NO. P2-127
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
Approve a Final Change Order and a construction contingency increase of $546,890 (8.4%) to finalize all costs for the existing Construction Contract with Archico Design Build, Inc., for Collections Yard Relocation and Warehouse Demolition at Plant No. 2, Project No. P2-127, for a total contingency amount of $1,196,890 (18.4%).
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BACKGROUND
Orange County Sanitation District (OC San) Project No. P2-127 constructed a new collections yard and two remote warehouse stations to replace the existing Plant No. 2 warehouse. The new facilities will support operations and maintenance of Plant No. 2, the collection system, and off-site pump stations.
Construction started in August 2023. Beneficial Occupancy of the new remote warehouses was achieved in September 2024, followed by the demolition of the existing Plant No. 2 warehouse and beneficial occupancy of the new collections yard in November 2024. Substantial project completion was achieved in February 2025, and final project completion was achieved in April 2025.
RELEVANT STANDARDS
* Ensure the public's money is wisely spent
* Commitment to safety & reducing risk in all operations
PROBLEM
During construction there were unknown utility conflicts which required design changes and clarifications. At the end of the project, safety and functionality design changes were also required to commission the new compressed natural gas fueling system.
The unknown conditions and design changes resulted in impacts to the Contractor. While some delays were mitigated during construction, others impacted the performance of work and extended the project duration. During construction, the Contractor provided several requests for changes with insufficie...
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