July 28, 2026
July 28, 2026
Public Works
DATE: July 28, 2026
TO: Mayor Martinez and Members of the City Council
FROM:
Daniel Chavarria, PE, Director of Public Works
Tawfic Halaby, PE, Deputy Public Works Director
Bradley Harms, Environmental Manager
Subject:
Contract with Oldcastle Infrastructure, Inc. for
Hydrodynamic Separator Maintenance Services
FINANCIAL IMPACT: The proposed $100,000 expenditure will be funded through the Storm Water Fund and includes a 20 percent
contingency. The contract amount covers routine
semiannual maintenance of the City’s five hydrodynamic
separator units and additional City-authorized work that may be required due to storm events, changing field
conditions, or regulatory directives. City staff will confirm that sufficient funding is available within the approved Fiscal Year 2026-2027 budget prior to contract execution (Account String: 40623431-400201).
PREVIOUS COUNCIL
ACTION:
None.
STATEMENT OF THE
ISSUE:
The City's Hydrodynamic Separator (HDS) units are
underground stormwater treatment devices that capture
trash, sediment, debris, and other pollutants before
stormwater is discharged to local waterways. These
devices require routine maintenance to continue
operating effectively.
The City did not achieve the Municipal Regional
Stormwater Permit requirement to reduce trash
discharges by 100 percent by June 30, 2025, and is
currently operating under a cease-and-desist order
AGENDA
REPORT
July 28, 2026
issued by the San Francisco Bay Regional Water Quality
Control Board. Continued maintenance of the City's HDS
units is an important component of the City's ongoing
trash reduction efforts. Consequently, City Council
approval of the contract is needed to support mitigation efforts.
RECOMMENDED ACTION:
ADOPT a resolution to APPROVE a contract with
Oldcastle Infrastructure, Inc. for routine and as-needed hydrodynamic separator maintenance services in an
amount not to exceed $100,000, for a term of July 7,
2026, through July 6, 2027, with two one-year extension options, and AUTHORIZE the City Manager, or designee,
to execute related documents necessary to implement
the contract — Public Works (Bradley Harms 510-307-
8094/Tawfic Halaby 510-620-5482).
DISCUSSION:
Background
The City of Richmond is regulated under the Municipal Regional Stormwater Permit, which requires cities throughout the San Francisco Bay Area to reduce the amount of trash discharged from municipal storm drain systems.
The permit required the City to achieve a 100 percent reduction in trash discharged from the storm drain system by June 30, 2025. The City did not meet that deadline. As a result, the San Francisco Bay Regional Water Quality Control Board issued a Cease- and-Desist Order requiring the City to continue implementing trash reduction measures and achieve full compliance by June 30, 2030.
Hydrodynamic Separator units are one of the City’s primary trash reduction measures.
These underground treatment devices capture trash, sediment, debris, and floatable material before stormwater is discharged into local waterways.
The City currently owns five Hydrodynamic Separator units that require routine maintenance to remain effective.
Proposed Contract
To maintain these facilities, the Public Works Department issued a Request for Proposals for Hydrodynamic Separator maintenance services (Attachment 1).
The City received one proposal in response to the Request for Proposals. City staff reviewed the proposal submitted by Oldcastle Infrastructure and determined that it met the requirements of the solicitation and that Oldcastle Infrastructure is qualified to perform the required services (Attachment 2).
July 28, 2026
Oldcastle Infrastructure’s proposal includes routine maintenance of all five Hydrodynamic Separator locations at a cost of $42,500. The proposal also includes pricing for additional on-demand cleaning, additional traffic control, and non-routine labor when authorized by the City.
The agreement provides for (Attachment 3):
Routine cleaning of all five Hydrodynamic Separator units two times each year; Additional on-demand cleaning when authorized by the City; Removal, transportation, and lawful disposal of collected debris and sediment; Traffic control necessary to safely perform the work; Documentation of completed maintenance; and
All labor, equipment, materials, and incidentals necessary to perform the services.
The contract is proposed for an initial term of one year, with the option for the City Manager to extend the agreement for up to two additional one-year terms, subject to satisfactory contractor performance, continued regulatory need, and the availability of funding.
Analysis
Hydrodynamic Separator units only function effectively when they are cleaned on a regular basis. As trash and sediment accumulate inside the units, their storage capacity is reduced and pollutants may bypass the treatment system during storm events.
Routine maintenance helps preserve the effectiveness of the City’s trash capture infrastructure and supports continued compliance with the Municipal Regional Stormwater Permit and the Regional Water Board’s Cease and Desist Order.
The proposed contract also includes an allowance for additional City-authorized maintenance beyond the routine semiannual cleaning schedule. This provides flexibility to respond to storm events, unexpected field conditions, inspections, or additional maintenance required by the San Francisco Bay Regional Water Quality Control Board without requiring a separate procurement, provided all work remains within the approved not-to-exceed contract amount.
If the City Council does not approve the contract, the City would need to rely on existing City staff resources or separate procurements to perform maintenance. This could delay cleaning activities, reduce the effectiveness of the Hydrodynamic Separator units, and negatively affect the City’s ongoing trash reduction efforts.
Conclusion
Approval of the proposed contract will provide routine and as-needed maintenance for the City’s five Hydrodynamic Separator units and support continued implementation of the City’s stormwater trash reduction program.
July 28, 2026
City staff recommend adoption of the attached resolution authorizing the City Manager, or designee, to execute the contract with Oldcastle Infrastructure, Inc. for a one-year term, with two one-year extension options, in an amount not to exceed $100,000 (two cleanings plus 20 percent contingency), subject to approval as to form by the City Attorney (Attachment 4).
DOCUMENTS ATTACHED:
Attachment 1 – Request for Proposals for Hydrodynamic Separator Maintenance Services
Attachment 2 – Oldcastle Infrastructure Proposal, Qualifications, Methodology, References, and Payment Proposal
Attachment 3 – Proposed Contract
Attachment 4 – Resolution