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Bidding Opportunity
**The due date for this bidding opportunity has passed**

Niwot Ditch Diversion Reconstruction and Fish Passage Installation Project

Due Date: 12/16/2020 2:00 pm
Bidding Number: BID #7192-20
Bidding Categories: Parks and Open Space
Pre-bid Location:

OPTIONAL PRE-BID MEETING:

An optional, prerecorded, virtual pre-bid meeting is available to all interested parties at www.bouldercounty.org/open-space/management/niwot-ditch-diversion-repair/ starting November 18, 2020. Viewing this prerecorded pre-bid and associated drone flight of the project site at this web address is not mandatory to submit a bid for the project, but, is highly encouraged. The project manager, project engineer and other key representatives highlight project details in the project plans, specifications, and this Invitation to Bid. The virtual pre-bid meeting was conducted between the participants shown in the video and did not include any outside interested parties participating in or viewing the meeting.

All interested Parties, that timely request to participate in the optional Pre-BID on-site viewing, will be permitted access to the project site, this will last approximately one (1) hour. Only three (3) designated representatives from a company/firm will be scheduled. When interested party representatives arrive onsite for the scheduled site visit, they will be greeted by the supervising county representative who will direct the interested party representatives to the appropriate parking areas. No additional conversation between the supervising county representative and interested party representatives will be conducted. Additional requests to access the project site will not be granted.

Due to the importance of the project and budgetary restraints, all interested Parties are strongly encouraged to attend the pre-bid meeting to ensure the submittal of a complete bid. Change order requests due to incomplete bids or a miscalculation of required tasks by the selected contractor will not be entertained by the County and will be the sole financial responsibility of the selected contractor to complete the Project.

Boulder County reserves the right to decline a request for bid withdrawal (claim of error) based on a bidder’s failure to view the project site as encouraged by the County.

Interested Parties should contact the Boulder County Purchasing Department at purchasing@bouldercounty.org to reserve a place at the optional pre-BID on-site viewing, reserved spaces will be on a first-come, first-serve basis. The meeting date and time will be disclosed when a reservation is made. This is not a public property, access will not be permitted beyond the pre-scheduled, pre-BID viewing. Reservations will only be taken beginning on November 19, 2020 through the end of business, 4:30 p.m., on November 20, 2020.

Other Comments:

BACKGROUND:

Boulder County Parks and Open Space (BCPOS) is seeking bids from qualified and experienced contractors to secure construction services for the reconstruction and protection of ditch infrastructure, installation of a fish passage system, restoration of stream channel, stabilization of creek banks, and the re-vegetation of the area. The project is located on the Golden Fredstrom Open Space property at 11300 N. 75th Street, Longmont, CO 80503, as well as adjacent private property. BCPOS is working with the Niwot Ditch Company and associated unincorporated ditches on the reconstruction of the Niwot Ditch in-stream diversion dam on St. Vrain Creek between 75th Street and Airport Road. The design has been developed by GEI Consultants Inc.

Contractors are advised:

  1. Onsite work, including mobilization, clearing and grubbing will not be permitted to start until February 1, 2021;
  2. The Project is to be substantially complete on or by March 31, 2021;
  3. Final completion is required on or by April 20, 2121.

This structure is currently in a dilapidated state and vulnerable to structural failure during peak flows or high flow events. Additionally, the current structure creates a hydraulic jump in the creek, increasing potential for erosion and avulsion, creating a barrier to fish passage and disrupting important natural stream processes, such as sediment transport.

This diversion dam is located on a reach of St. Vrain Creek that is one of that last strongholds for native transition zone fish in Colorado (e.g. plains top minnow) and is one of CPW’s highest priorities for native fish conservation in the state. One of the management goals for conservation of these sensitive native fish populations is to restore upstream-downstream connectivity and allow for natural movements of both native and non-native sport fish by removing instream barriers to movement. The primary goal of this project is to protect and restore native fish populations while ensuring the efficient delivery of decreed water rights.

The project will replace the existing diversion dam with an engineered structure approximately 400 feet upstream of the existing dam location that includes two headgates. Using design concepts from natural channel design, the new diversion dam will be a multi-objective structure built from natural materials that is more resilient to high flows, reduces flood risk, allows passage of native and non-native fish, and facilitates natural stream processes and function.

A construction schedule and water management plan will be essential components of the Project to allow construction to proceed within existing permits that protect the stream and Preble’s meadow jumping mouse (PMJM) habitat, allow for in-stream construction to work in the dry, and allow for water delivery to the Niwot Ditch for all calls on the associated ditches from March 31, 2021. Each of these components will be essential to the Project and could cause stop work orders and/or liquidated damages.

OPTIONAL PRE-BID MEETING:

An optional, prerecorded, virtual pre-bid meeting is available to all interested parties at www.bouldercounty.org/open-space/management/niwot-ditch-diversion-repair/ starting November 18, 2020. Viewing this prerecorded pre-bid and associated drone flight of the project site at this web address is not mandatory to submit a bid for the project, but, is highly encouraged. The project manager, project engineer and other key representatives highlight project details in the project plans, specifications, and this Invitation to Bid. The virtual pre-bid meeting was conducted between the participants shown in the video and did not include any outside interested parties participating in or viewing the meeting.

All interested Parties, that timely request to participate in the optional Pre-BID on-site viewing, will be permitted access to the project site, this will last approximately one (1) hour. Only three (3) designated representatives from a company/firm will be scheduled. When interested party representatives arrive onsite for the scheduled site visit, they will be greeted by the supervising county representative who will direct the interested party representatives to the appropriate parking areas. No additional conversation between the supervising county representative and interested party representatives will be conducted. Additional requests to access the project site will not be granted.

Due to the importance of the project and budgetary restraints, all interested Parties are strongly encouraged to attend the pre-bid meeting to ensure the submittal of a complete bid. Change order requests due to incomplete bids or a miscalculation of required tasks by the selected contractor will not be entertained by the County and will be the sole financial responsibility of the selected contractor to complete the Project.

Boulder County reserves the right to decline a request for bid withdrawal (claim of error) based on a bidder’s failure to view the project site as encouraged by the County.

Interested Parties should contact the Boulder County Purchasing Department at purchasing@bouldercounty.org to reserve a place at the optional pre-BID on-site viewing, reserved spaces will be on a first-come, first-serve basis. The meeting date and time will be disclosed when a reservation is made. This is not a public property, access will not be permitted beyond the pre-scheduled, pre-BID viewing. Reservations will only be taken beginning on November 19, 2020 through the end of business, 4:30 p.m., on November 20, 2020.

Attending the optional Pre-BID on-site viewing is not mandatory nor is it required to submit a bid for the project, but instead, is highly encouraged.

WRITTEN INQUIRIES:

All inquiries regarding this BID will be submitted via email to the Boulder County Purchasing Office at purchasing@bouldercounty.org on or before 2:00 p.m. December 7, 2020. A response from the county to all inquiries will be posted and sent via email no later than December 9, 2020.

Please do not contact any other county department or personnel with questions or for information regarding this solicitation.

SUBMITTAL INSTRUCTIONS:

BIDs are due at the email box only, listed below, for time and date recording on or before 2:00 p.m. Mountain Time on December 16, 2020. A bid opening will be conducted at 3:00 p.m. via email to all who have submitted a bid.

BID #7192-20

The attached addendum supersedes the original Information and Specifications regarding BID # 7192-20 where it adds to, deletes from, clarifies or otherwise modifies. All other conditions and any previous addendums shall remain unchanged.

Please note: Due to COVID-19, BIDS will only be accepted electronically by emailing purchasing@bouldercounty.org.

BID #7192-20 Addendum 1