rfq-des-2025-07.pdf

Request For Qualifications

2025 Lake Wentworth, Watershed Management Plan Implementation Phase V, Red Brook Circle/Wentworth

Estates Wolfeboro, NH

Wentworth Watershed Association

Julie Brown Project Manager

51 Mill Street, Building 3, Unit D PO Box 2235

Wolfeboro, NH 03894 juliebrown@wentworthwatershed.org

Tel. 603-534-0222 mailto:juliebrown@wentworthwatershed.org tel:+16035340222

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Introduction:

The Wentworth Watershed Association (WWA) has prepared this Request for Qualifications (RFQ) in cooperation with the New Hampshire Department of Environmental Services (NHDES) and NH LAKES to solicit submittals from qualified engineering contractors to provide the deliverables requested in the subject Scope of Work.

Project Description

This project consists of managing the water run-off, settling and infiltration throughout the Wentworth Estates neighborhood, a 1970’s era development of 25 house lots that share 600 feet of common waterfront on approximately 18 acres on the shores of Lake Wentworth located at Red Brook Circle in Wolfeboro, NH.

Currently, two culverts discharge stormwater runoff from a gravel road that runs through the neighborhood, sloping down toward the lake. Road and culvert deterioration over the years has increased the non-desirable water runoff that goes directly into Lake Wentworth, allowing high levels of phosphorus and other pollutants and sediments to enter the lake, deteriorating lake quality and safety for all those who use it to recreate. There is a gravel boat ramp that frequently erodes directly into the lake.

The Contractor shall propose stormwater Best Management Practices (BMPs) to repair dirt roadways and properly crown the infrastructure for water removal into swales along the sides of the roadway. In addition to the roadway swales, stone check dams, infiltration trenches, and berms will be constructed as required to divert water into existing drainage channels and away from the Wentworth Estates beach area and boat ramp, mitigating pollutants entering Lake Wentworth. The contractor shall also propose ways of stabilizing the boat ramp, including but not limited to geogrid or other pervious reinforcement. Finally, areas will be identified that can support additional native plantings, assisting with natural water infiltration into the landscape, and preventing erosion and sedimentation runoff into Lake Wentworth. The WWA understands this is a proposed approach, and the final design may differ. The result of having these BMPs implemented will be the measured reduction of available phosphorus and other nutrients flowing into Lake Wentworth, helping to prevent a further decline in water quality.

Selection Procedure

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Required Qualifications Submissions Applicants are required to submit one (1) electronic copy as a PDF of their qualifications package. PDF documents can be emailed to juliebrown@wentworthwatershed.org by June 23, 2025. Submissions, including all listed components below, shall be 15 or fewer pages in length and include a cost estimate.

BMP construction is anticipated to commence in the spring of 2026 and must be complete by the end of August 2026.

Qualification packages shall include the following components as described below.

1. Name, address, brief history, and description of the firm.

2. Description of the project team, including project team organization, team member resumes, special qualifications or certifications, and their anticipated level of involvement in each phase of the project as described in the Scope of Work.

3. Related projects, areas of expertise, and experience:

a. Include a description of other projects the firm has done that are similar in nature to this one.

b. Provide a list of references, including names, titles, and contact information.

4. Description of the firm’s approach to performing the tasks detailed in the Scope of Work and described in the project description, including a timeline and discussion of the relative effort anticipated to be expended on each Objective and Task.

Responses should demonstrate and document that the individual/firm has the professional experience to proceed with the work tasks as described in the scope of work in this RFQ. A complete and timely submittal as described in this RFQ is required for the submittals to be considered.

Selection Criteria Selection will be based on the assessment of the qualifications package to meet the following criteria.

1. Specialized Experience of the Project Team (40%)

a. Overall experience directly related to the successful completion of similar watershed restoration projects.

b. Experience with the design and installation of stormwater Best Management Practices (BMPs), including specific experience with the type of practices detailed in the Scope of Work.

c. Demonstrated ability to complete work within the available budget and schedule.

d. Knowledge of the local, state, and federal permits and authorizations required for stormwater BMP implementation projects in New Hampshire.

2. Project Personnel and References (25%) Principal team members’ roles and participation levels, availability, qualifications, and experience.

3. Project Approach (35%) Demonstrated a strong understanding of the scope of work, project schedule, and expected deliverables outlined in the RFQ.

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WWA reserves the right to request interviews with any or all applicants. Scope, schedule, and fee negotiations will start with the highest-ranked qualified firm. If an agreement cannot be mutually arrived at, negotiations shall proceed with the next highest-ranked firm, and so on until an agreement is reached.

RFQ Questions Questions concerning this RFQ must be submitted via juliebrown@wentworthwatershed.org by June 4, 2025. WWA will not respond to telephone inquiries about the RFQ. Any questions about this RFQ raised by an individual/firm will be answered in a summary digest. The summary digest will be provided to those who contact WWA before June 4, 2025, at 5 pm EST. The summary digest will be provided via e-mail no later than June 9, 2025, to all who requested to be on the response list.

Timeline

● June 2, 2025 Request for Qualifications release

● June 11, 2025, Deadline for submittal of questions about this RFQ

● June 16, 2025, Q&A summary digest distributed by 5 p.m. to those who have requested it

● June 23, 2025, Deadline for receipt of qualification packages to this RFQ

● July 3, 2025, Anticipated final selection of contractor and notification to all firms

Disclaimer This RFQ does not commit WWA to award a contract or pay any costs incurred during the preparation of any submittal. WWA reserves the right to reject any or all of the submittals while adhering to applicable laws. WWA also reserves the right to eliminate the need for the selected firm to complete one or more tasks, pending the outcome of preceding related tasks or issues.

To participate in the project and receive payment, the selected firm will be required to enter into a contract which stipulates that the Contractor is eligible to receive federal funding and certifies compliance with State and Federal rules related to grant-funded projects.

Scope of Work Deliverable 1 – Prepare a Site-Specific Project Plan (SSPP)

The selected consultant will:

● Prepare a Site-Specific Project Plan (SSPP) for monitoring activities designed to measure baseline surface water quality and to determine the effectiveness of stormwater Best Management Practices (BMPs) installed. The majority of the monitoring will be aligned with the University of New Hampshire Lakes Lay Monitoring Program (LLMP) and their existing, 5 | Page 2025 Wentworth Watershed Association, RFQ Environmental Engineer- ARPA Grant programmatic Quality Assurance Project Plan (QAPP) on file with NHDES. Additional data manipulation will include the selection and execution of pollutant load reduction models to evaluate the effectiveness of installed BMPs. Output from these models will be reported to NHDES and NH LAKES by the WWA after each BMP is installed.

● Incorporate edits from NHDES and NH LAKES into draft and submit final document for NHDES approval.

Deliverables 2 – Complete detailed design for Wentworth Estates final BMPs

The selected consultant will:

● Coordinate meeting with Wentworth Watershed Association and Wentworth Estates representative prior to design development.

● Review existing design concepts and examine the suitability of design concepts for construction before providing a summary report for review by WWA, NH LAKES, and NHDES.

● Manage ongoing coordination with Wentworth Estates representative during design development and revision.

● Develop final design concepts.

● Complete detailed construction designs, calculations, and projected costs, and submit to WWA and NHDES for approval.

● Make any modifications to detail designs requested by WWA, NH LAKES, and NHDES, and resubmit the final approved designs.

Deliverable 3 – All necessary permits, wetland surveys, and shallow test pits to confirm groundwater and soil types needed to generate construction-ready plans

The selected consultant will:

● Conduct pre-permitting with NHDES.

● Define all required State and Town permits, and submit application forms.

● Obtain required permits from applicable jurisdiction.

● Identify utilities in the proposed work area.

● Complete required surveys and develop plans required for the bidding process and construction.

Deliverable 4 – Construction for Wentworth Estates BMPs

The selected consultant will:

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● Develop a Request for Bid for construction contractors. Bid process will follow a State and Federally approved procurement processes. All documents must be approved by NHDES and NH LAKES prior to publication. Conduct a pre-bid site walk with contractors.

● Issue Request for Bid (RFB) and assist in completing the process to select the construction firm.

● Draft a contract agreement between the construction contractor and the WWA for the Scope of

Work.

● Submit draft contract to NHDES for approval.

● Coordinate with the contractor to implement construction of the BMPs per the detailed designs and contract agreement, and complete pollutant pollutant-controlled report and construction closeout memo for delivery to NHDES and NH LAKES

● Develop Operations and Maintenance Plan for BMPs and deliver to WWA, Wentworth Estates, and NHDES.

Deliverable 5 – BMP Concept Designs for 3 Additional Sites

Based on BMP recommendations identified in the Watershed Management Plan, the selected consultant shall work with the WWA to select three (3) medium to high priority BMP sites for preliminary design for NHDES review and approval. Completed conceptual designs should mirror the examples in Appendix F and Appendix G of the Lake Wentworth and Crescent Lake Watershed Management Plan (2012).

Deliverable 6 – Outreach and Education

The selected consultant shall:

● Collaborate with the WWA to provide related educational material to support an outreach and education program that will be coordinated by the WWA.

● Present BMP information at one (1) public meeting for local stakeholders.

Deliverable 7 – Semi-annual Pollutants Controlled Reports and Final Grant Report to WWA and NHDES

● The semi-annual shall include a Pollutants Controlled Report within one month of when the structural BMPs have been implemented during the reporting period.

● The selected consultant shall submit a comprehensive final report in both electronic and hard-copy to WWA, NH LAKES, and NHDES on or before the project completion date. The final report shall include load reduction estimates.

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Detail of Deliverable Requirements Deliverable 1: Completion of final site design plan acceptable to WWA, NH LAKES, and NHDES.

Task 1: Coordinate with WWA to develop a conceptual Wentworth Estates Site water management plan to assure excess water from heavy rain and spring snowmelt are properly diverted and infiltrated to areas that will reduce the available phosphorus that enters Lake Wentworth. The proposed Best Management Practices (BMPs) at Wentworth Estates will require infiltration swales and trenches, check dams and sediment traps to manage pollutant laden stormwater from the impervious gravel roadway and prevent direct discharge into Lake Wentworth. These infiltration devices need to be designed to slow down water velocities and improve stormwater pollutant removal efficiency. An infiltration trench strategy will be required in an area closer to the lake adjacent to the existing volleyball court where water is currently ponding. This water diversion will need to discharge into the existing drainage channel.

Task 2: Detailed design shall include a topographic survey and shallow test pits to confirm groundwater and soil types recommended to complete the design of these BMPs. Final design shall include adequate sizing, locating and specifying of materials. Proper BMP volume sizing and depths will be required to ensure compliance with local and state stormwater standards for infiltration devices. Proper surface and subsurface materials will be specified to stabilize gravel roadway areas.

Task 3: Coordination with the WWA neighborhood liaison will be necessary to obtain owner permission for work being accomplished on privately owned properties.

Task 4: In order to start work, permissions through the local conservation commission and state of NH shoreline permit process must be completed. It is expected that standard materials and customary construction practices will be used, therefore, no special construction will be required to implement the BMPs for this project site. It is expected, based on the proximity to the lake and presence of standing water at the time of previous site visits, that some excavations will encounter groundwater and require pumping.

Deliverable 2: Approved wetland/shoreland permit(s).

Tasks: Coordinate with a NH certified wetland scientist to perform a wetland survey of the project area.

Participate in NHDES pre-permit meetings as needed to discuss proposed project design. Complete NHDES Wetland permit application for WWA to submit (permit fees to be covered by WWA). Provide any necessary information as requested by NHDES to ensure the permit is approved in a timely manner.

Deliverable 3: Completion of Site-Specific Project Plan (SSPP) and Pollutants Controlled Report (PCR)

Tasks: Work with WWA to develop an acceptable SSPP under the NHDES ARPA Grant Project Management generic Quality Assurance Project Plan that will cover the models to be used to estimate the pollutant load reductions attributable to the implemented BMPs. The SSPP must be completed prior to the construction phase. Complete a Pollutant Controlled Report (PCR) using the EPA Pollutant Load Estimation Tool, which includes every implemented BMP, within one month after the construction phase.

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Deliverable 4: Successful implementation of project BMPs.

Tasks: Following the approved NHDES final design plan, provide oversight of the project during the BMP construction phase that includes being onsite during critical phases of the project. It is expected that continuous communication will occur with the WWA project liaison to keep them informed of progress and issues that happen while the project is being executed.

Deliverable 5: Completion of Operation and Management (O&M) Plan.

Tasks: Work in cooperation with WWA to complete an O&M plan that includes the type and frequency of maintenance required. The local Wentworth Estates Road Committee will be responsible for the long-term maintenance of the BMPs.