Approve first amendment to Agreement No. 20-304 with WSP Inc. (formerly Golder Associates) to increase the maximum compensation to $497,227 for design and construction quality assurance services for the landfill and adopt a budget resolution increasing the authorized expenditures and revenue of the Sanitation Enterprise Fund by $150,000. (No general fund impact) (4/5 vote required) (Lindbo/Kieffer)

On December 20, 2020, the Board approved an agreement with WSP Inc. (formerly Golder Associates) as well as two other consultants (Geologic Associates and Geosyntec Consultants) to prepare designs and perform construction quality assurance services at the landfill.  Each consultant had several defined tasks as well as an on-call assistance task for minor projects.  Included in WSP's scope, was the design of a landfill module (Waste Management Unit 6H) and a liquid surface impoundment (Waste Management Unit H4).  To-date, the design and construction of Waste Management Unit 6H has been completed and the design of Waste Management Unit H4 is in-progress.

Prior to construction, all landfill module designs require review and approval by the California Regional Water Quality Control Board.  It is common for these reviews to take a significant amount of time, with several recent projects taking over a year to receive approval.  Because of this long approval process, staff is recommending the design process for the next landfill module commence now to ensure uninterrupted service to landfill customers.

Staff solicited proposals for the design of the next landfill module from the three consultants (WSP, Geo-Logic and Geosyntec) currently on retainer, which were reviewed by division staff.  Each consultant provided a quality proposal but WSP stood out for their low cost and experience in designing similar modules at the landfill.  Because of this, staff is recommending WSP be selected for the next landfill module design. 

In addition to the module design, WSP has provided the division on-call assistance with the landfill's storm water discharge permit as well as other design projects such as an expansion to the landfill's groundwater extraction system.  The original maximum amount for these types of tasks was $200,000 and the majority of these funds have been expended.  The attached amendment also includes an increase to WSP's on-call services task of $50,000 to cover continued support for the landfill's storm water discharge permit and any small project assistance the landfill might need.

The attached budget resolution modifies the Sanitation Enterprise Fund budget to address these changes.   The increased expenses with this amendment will be completely covered by the fees collected from landfill customers.

County Counsel has approved the amendment as to form.

Request for Proposals (RFP) Service Requested: Engineering Design and Construction Quality Assurance Services at the Yolo County Central Landfill

The Original Evaluation Criteria Included in the RFP

Reasonableness of Costs (15 points)
Qualifications and Experience  (15 points)
Demonstration of Successfully Completing Similar Past Projects (15 points)
Demonstrated Competence (10 points)
Demonstration of Adequate Staffing to Complete the Projects (5 points)
Customer References (10 points)
Exceptions to Sample Agreement (5 points)
Quality and Completeness of Submitted Proposal (15 points)  
Proposer’s Concept & Understanding of the County’s goals and intent for the design and function of the project. (10 points)

Original Proposal Ranking Scores

Cost Proposals for new landfill module design

Vendor Performance

The Department confirms WSP Inc. has performed satisfactorily on the current agreement.