02_SOW_Phase 1_ Design-Build_Snell_Lock.pdf

Snell Lock Concrete Diffusers Replacement

1. General Overview and Scope

1.1. Scope of Work Overview

This scope of work shall provide all design and construction services required to complete the replacement of diffuser structures (diffusers) at Snell Lock located in Massena, New York. The Great Lakes St. Lawrence Seaway Development Corporation (GLS) intends to replace six (6) concrete diffusers (water manifolds) below the downstream sill at Snell Lock over two winter seasons. The GLS is soliciting the project requirements in a two-phase design-build solicitation.

The diffusers are geometrically complex reinforced concrete hydraulic structures which are a critical part of the lock structure as they are required to dissipate large forces from the release of lock chamber water and reduce downstream turbulence which is needed for vessel navigation safety. These structures are original to the construction of the lock and after over sixty years of operation are near the end of their service life. Replacement of these structures will require a complex design. The design must entail specifics on how to demolish the existing diffusers while protecting the integrity of the adjacent lock structures and install the replacement diffuser structures.

Access to the work areas is restrictive in that the diffusers are about 50-feet below the adjacent lock wall surfaces thus temporary access means will be required. The diffusers are normally submerged in about 45-feet of water, and the work can only be done when the lock is out of service and mostly dewatered which is during the annual winter shutdown period from early January through early March. The work area cannot be completely dewatered by the GLS and therefore the Contractor will need to address additional dewatering in areas where further dewater is required, and to mitigate continuous leakage past GLS’s temporary water damming structures (stop logs), all while in subfreezing temperatures during the completion of this scope of work. The stop logs will be installed by the GLS.

The base requirement would be to complete three (3) diffusers in the first year’s winter shutdown period and the other three (3) diffusers in the second year’s winter shutdown period.

Generally, the Contractor’s responsibilities shall include, but will not be limited to, the following:

a. Complete the design and construction of the Project in accordance with the specifications.

b. To furnish and provide all labor, materials and equipment, as necessary to complete the Project.

1.2. General Overview of the Procurement Process

This is a two-phase design-build construction procurement. In Phase One, interested offerors shall submit proposals, demonstrating their capability to successfully execute the design-build construction contract resulting from this solicitation. The GLS will evaluate the Phase One submittals in accordance with the criteria described herein and select the most highly qualified offerors – no more than five – to compete for the design-build contract in Phase Two. In Phase Two, the selected most highly qualified offerors from Phase One shall submit technical and cost proposals in accordance with the criteria described herein. A more detailed description of the scope of work and requirements will be provided the selected most highly qualified offerors from Phase One in order for them to provide the required Phase Two technical and cost proposals.

2. Submittal Requirements for Phase One

Submittals will be evaluated in Phase One to determine up to five of the most highly qualified offerors. Each proposal will undergo an evaluation utilizing the factors defined below. Phase One does NOT involve a pricing submission or evaluation of price.

a. Factor 1 – Technical Approach

b. Factor 2 – Technical Qualifications

c. Factor 3 – Past Performance

2.1. Factor 1 – Technical Approach

The Technical Approach shall describe the offeror’s approach to the design and construction of the Project. As a minimum, it shall include the following:

Collaborative Approach for Design-Build

a. Describe interactions within the offeror’s team and with GLS during the design.

Specifically describe a plan to meet submittal requirements, changes, and quality control.

b. Describe the construction team management and quality control plan for the construction.

c. Describe the role and interaction of the design team with the construction team during construction.

Planning and Scheduling

a. Describe the offeror’s time control capabilities and systems to be used to develop and manage the schedule for the design and construction of the project.

b. Provide information on how you will handle schedule progress reviews, updates, changes, and documentation.

Quality Control

a. Describe the offeror’s quality control capabilities and systems to be used to maintain quality control for the design and construction of the project.

b. Provide information on how you will handle internal and external requests for information, shop drawings, submittal reviews, progress meetings, site visits, contract completion, closeout, as-builts, and completion documentation.

Conceptual Design

Offerors shall submit a conceptual design to include general materials and construction methods. The offeror shall explain the benefits of the conceptual design. The conceptual design shall not be a detailed design. The attached reference drawings (327-C-20/1, 327-C- 20/25 and 327-C-20/26) show the general layout and elevations of the diffusers. These should be used as reference to gain familiarity of the structures when developing the conceptual design.

2.2. Factor 2 – Technical Qualifications

The Technical Qualifications shall include an organizational chart including a description of the firm(s) involved, their relative roles and responsibilities, and any contractual arrangements (i.e.

joint ventures) that will be established to constitute the offeror’s design-build team. As a minimum, it shall also include the following:

Key Project Personnel Capabilities and Experience

Key project personnel capabilities and experience information shall be submitted for the key personnel identified below (minimum qualifications listed):

a. Project Manager – two (2) years of substantial documented experience in design-build services.

b. Construction Manager – two (2) years of substantial documented experience in design-build services.

c. Engineer of Record (EOR) – licensed professional engineer in the State of New York.

For other key project personnel, provide a consolidated list with name, position, title, description of project responsibility, and any applicable professional qualifications.

2.3. Past Performance

The offeror shall have completed at least two (2) projects of similar scope and complexity within the past ten (10) years. References shall be provided. Each reference shall include the name and address of the client, a brief but detailed description of the work performed and a contact person with valid contact information (phone number and email).

3. Submittal Requirements for Phase Two

After the GLS has evaluated the Phase One submittals and GLS selects up to five of the most highly qualified offerors, those offerors will be invited to compete for the design-build contract by completing the Phase Two submittals. A more detailed description of the design-build scope of work and requirements will be provided to the selected offerors in order for them to provide the required Phase Two technical and cost submittals. Offerors providing Phase One submittals shall not provide Phase Two submittals with their Phase One submittals.

The following description of the Phase Two submittal requirements is for “informational purposes only” during Phase One of this solicitation.

3.1. Technical Proposal Requirements

Technical Proposals shall include sufficient information so that a proper evaluation can be made with respect to the requirements outlined in the scope of work. As a minimum, Technical Proposals shall include the following:

a. Discussion of the understanding of the scope of work.

b. Detailed discussion of project approach and steps to be taken to accomplish the work.

c. Detailed Work Plan including scheduled sequencing of key activities and project milestones.

3.2. Cost Proposal Requirements

Cost Proposals shall be detailed and include all costs to complete the scope of work. All travel and meals shall be reimbursed per the requirements of the Government Travel Regulations. The GLS intends to evaluate offers and award a contract without discussions with offerors. Therefore, the offeror’s initial offer should contain the offeror’s best terms from a cost and technical perspective. However, the GLS reserves the right to conduct discussions with offerors if deemed necessary by the Contracting Officer.

3.3. Evaluation of Proposals

The GLS will make the Phase Two award to the responsible offeror whose offer conforms to the requirements and on the evaluation factors listed below:

a. Technical Proposal

b. Cost Proposal

c. Past Performance

4. Overall Projected Project Schedule

The overall project schedule is as follows

a. Release Phase One of the solicitation: 25 August 2022 (on/about)

b. Pre-proposal inquiries due: 06 September 2022 (on/about)

c. Phase One submissions due: 26 September 2022 (on/about)

d. Release Phase Two of the solicitation to selected firms: 03 October 2022 (on/about)

e. Phase Two proposals due: 18 October 2022 (on/about)

f. Award: 28 October 2022 (on/about)

g. Lock dewatered for first season’s work: 09 January 2023 (on/about)

h. Required completion for first season’s work: 06 March 2023 (on/about)

i. Lock dewatered for second season’s work: 08 January 2024 (on/about)

j. Required completion for second season’s work: 04 March 2024 (on/about)