Approve agreement with MBK Engineers to provide program management services for the DSID 19516 Pipe Removal Project, with a term ending December 31, 2026, and a not-to-exceed amount of $169,500. (No general fund impact) (Fieseler/Liebler)

Approve agreement with MBK Engineers to provide program management services for the DSID 19516 Pipe Removal Project, with a term ending December 31, 2026, and a not-to-exceed amount of $169,500.

On May 20, 2025, the Yolo County Board of Supervisors approved a Deferred Maintenance Program Project Agreement (Yolo County Agreement No. 25-89; “DMP Agreement”) with the California Department of Water Resources for the DSID 19516 Pipe Removal Project (BOS Minute Order No. 25-35; Item No. 7). The project involves the removal of a 48-inch corrugated metal gravity flow pipe (identification no. DSID 19516) that is penetrating through the County Service Area No. 6 ("CSA-6") levee near State Route 45. The subject pipe has exceeded its useful life and is an eminent levee safety risk, necessitating its removal. In addition to removing the pipe, the CSA-6 levee driveway and ramp access at State Route 45 will be widened to support an adequate turn radius for construction equipment to support future operations and maintenance ("O&M") of the levee embankment. 

On July 18, 2025, the County issued a Request for Qualifications for Program Management Services for the project. The purpose of the solicitation was to procure a contractor to perform a suite of tasks in support of the project, as outlined in detail below. The subject agreement with MBK Engineers is the result of that solicitation. The services to be provided under the contract include seven core tasks and one optional task.  To adequately perform these services, MBK has proposed assembling a "Project Team" consisting of staff from their own firm, along with personnel from GEI Consultants, HDR Engineering, Monument ROW, and Psomas. 

Task 1 - Prepare Plans and Specifications (DWR Task 1A)
This task involves the preparation of CA Title 23 compliant plans and specifications for removal and backfill of DSID 19516 and the access improvements. Plan development will utilize (as applicable) existing Central Valley Floodplain Evaluation and Delineation (CVFED) LiDAR topography, geotechnical subsurface information, and pipe inspection records. Backfill will be completed utilizing excavated and stockpiled native embankment material and compatible import fill as needed. At the time of project construction, a site-specific evaluation in coordination with a to-be-selected contractor will be performed to identify potential modifications to construction methods. This task will be performed by staff from MBK, GEI, and Psomas.

Task 2 - Central Valley Flood Protection Board Coordination (DWR Task 1B)
This task involves coordination with the Central Valley Flood Protection Board ("CVFPB") to submit the proposed removal of the gravity flow drainage pipe as a maintenance request (Section 6d) or minor alteration (Section 6e). CVFPB approval of the project activities as either Section 6d or Section 6e will reduce permitting review schedule to coincide with DMP program funding expiration and obligation dates. This task will be performed by staff from MBK.

Task 3 - Real Estate Coordination (DWR Task 1D)
This task involves coordinating all project-related real estate actions, including acquisition of easement rights for access and construction, including valuation, offer, and recording of easements on one parcel. This task will be performed by MBK and Monument.

Task 4 - Engineer’s Estimate and Bid Coordination (DWR Task 1E)
This task involves preparing an engineer’s estimate, informed by the project design and specifications, to inform and identify likely construction costs for the pipe removal and access improvements. Additionally, the contractor shall assist with public bid and contract award for construction. This task will be performed by staff from MBK.

Task 5 - Biological and Cultural Monitoring (DWR Task 1H)
This task involves performing species and habitat surveys prior to, during, and following construction, supporting permit reporting requirements and preparation of closeout reports; coordination and scheduling of cultural monitors prior to and during construction, pre-construction trainings, and as-needed coordination with Native American Tribes. This task will be performed by staff from MBK and HDR.

Task 6 - Construction Management (DWR Task 1I)
This task involves construction contractor submittal review, general construction oversight, backfill and compaction testing per CA Title 23 requirement, and preparation of a construction completion technical memorandum. This task will be performed by staff from MBK and GEI.

Task 7 - Project Management (DWR Task 1J)
This task involves coordinating with County staff to prepare progress reports, reimbursement requests, and management of staff, subconsultants, and contractors. This task will be performed by staff from MBK.

Optional Task A - US Army Corps of Engineers Coordination (DWR Task 1C)
As needed, the contractor shall coordinate with the USACE to obtain approval to perform the proposed project within the CSA-6 Levee embankment. This effort may include obtaining a categorical permission or a letter of permission. This will be determined in coordination with CVFPB and USACE staff. This task will be performed by staff from MBK.

Background
The Knights Landing Levee System (“KLLS”) is part of the Sacramento River Flood Control Project (“SRFCP”). The SRFCP was authorized by the Flood Control Act of 1917 as Public Law 367 during the 64th Congress, and was later modified in 1928, 1937, and 1941. The KLLS consists of three levee segments with a total length of approximately 15.19 miles.  CSA-6 was established in 1975 and is governed by the Yolo County Board of Supervisors. CSA-6 is the local maintaining agency responsible for the O&M of 5.97 miles in the middle of the KLLS. CSA-6’s responsibility runs along the Sacramento River’s right bank from the Knights Landing Outfall Gates downstream to the Fremont Weir. The levee is part of Unit No. 127 of the SRFCP with O&M standards prescribed by the United States Army Corps of Engineers.