The City of Fort Bragg is planning to install 12 High Flow Capacity (HFC) trash capture devices within City-owned and operated storm drain systems in the public right of way to remove trash from a combined watershed area of approximately 583 acres. The Project will be phased with the installation of six (6) High Flow Capacity (HFC) Trash Capture Devices (TCDs) during Phase I and the installation of the remaining six (6) HFC TCDs during Phase II. Given the proposed phasing of the project, the construction documents should be prepared so that the project can easily be bid and constructed as two separate projects. The selected trash capture devices must be certified by the State Water Resources Control Board (SWRCB), have a proven track record in urban settings, gravity flow, and remove trash down to 5mm from stormwater runoff (OAR 2). The devices should handle runoff from a 1-year storm event and be appropriate for smaller Municipal Separate Storm Sewer Systems (MS4s) like Fort Bragg. The intent of this Request for Proposals (RFP) is to secure the services of a qualified Engineering Design consultant to conduct design-engineering services for the Stormwater Trash Capture Device Project PWP-00119. Design services shall generally include the following tasks: 1. Project Management 2. Data Gathering and Analysis 3. Investigations 4. Preliminary Design and Trash Capture Device Selection 5. Final Design and Contract Documents 6. Support During Bid Period 7. Support During Construction Task 1 Deliverables: Consultant shall submit all meeting agendas and presentations to the City at least two (2) days before meetings, and all meeting minutes shall be submitted within five (5) working days following each meeting. City comments shall be incorporated, and final minutes published for distribution and record. Task 2 – Data Gathering and Analysis • Gather, review, and understand information on the City’s previous planning and design efforts for the Project, including a detailed review of all associated reference documents (Attachments and OARs). • Conduct site visits and field assessments to evaluate existing conditions at each of the 12 proposed locations. • Review all relevant records of existing utilities including review of record drawings, property boundaries, and right-of-way, environmental and geologic information, as well as document physical conditions, features, and constraints within each area of the Project. • Review existing conditions of each device location and the integrity of each pipeline within the proposed “construction site area” and consider the “best options” for device selection. • Complete an independent review of all provided reference documents to either confirm the design recommendations or suggest alternatives. Alternative recommendations shall be identified and discussed early in the design. At a minimum, consultant review shall include the following: o Analyze existing data including stormdrain maps, stormdrain master plan, and 100% trash capture (plan, goals, requirements) logic for selecting specified locations. o Verify that the selected locations are sufficient to capture 100% of the trash generated and transported from the priority land use areas in the City. o Identify potential utility conflicts and concerns. o Evaluate hydrology concerns. o Ensure the sufficiency of the existing infrastructure to support the installation of devices in suggested locations. o Compare and Contrast at least three (3) device types for inclusion in this project. o Evaluate maintenance requirements for proposed devices to ensure maintenance obligations can be met using the equipment already owned by the Page 6 City and the locations will be easily accessible for maintenance activities. o Identify performance metrics that should be considered for the development of a monitoring plan to analyze the performance of TCDs. Task 2 Deliverables: Consultant shall summarize the results of this task (and elements from task 3 as applicable) into a Technical Memorandum (TM) and submit as one (1) electronic copy (searchable pdf), for City review. City comments shall be incorporated into the final technical memorandum
