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REQUEST FOR PROPOSAL (RFP):

PROFESSIONAL ENGINEERING, ENVIRONMENTAL, AND TECHNICAL SERVICES

ISSUED:

Wednesday July 29, 2026

PROPOSAL DUE DATE:

Monday August 24, 2026 by 5:00 pm AKST

Posted Publicly: YTT Website

ISSUED BY:

Yakutat Tlingit Tribe

PO BOX 418 YAKUTAT, AK 99689

POINT OF CONTACT:

Gavin Dixon, Tribal Consultant (gavin@cumbrec.com) and Rochelle Lekanof, Tribal Transportation Director (rlekanof@ytttribe.org)

YAKUTAT TLINGIT TRIBE

REQUEST FOR PROPOSALS (RFP)

PROFESSIONAL ENGINEERING, ENVIRONMENTAL, AND TECHNICAL SERVICES

Indefinite Delivery / Indefinite Quantity (IDIQ) Single Award Task Order Contract (SATOC)

Yakutat, Alaska

RFP Issue Date: July 29, 2026

BACKGROUND

The Yakutat Tlingit Tribe (YTT) is seeking a qualified consulting firm to provide professional civil engineering, environmental services, engineering services, and technical support services through an Indefinite Delivery/Indefinite Quantity (IDIQ) Single Award Task Order Contract (SATOC).

YTT administers a diverse portfolio of programs and projects throughout the City and Borough of Yakutat, including environmental restoration, transportation infrastructure, aquatic organism passage (AOP) culverts, fisheries, community facilities, environmental resilience, and natural resource management. These efforts are funded through a combination of Tribal, Federal, State, and grant funding sources and frequently require specialized professional services.

YTT also administers programs including the Tribal Transportation Program (TTP), the Native American Lands Environmental Mitigation Program (NALEMP), the Environmental Protection Agency Tribal Response Program (EPA TRP), fisheries restoration initiatives, and other Environmental Protection Agency (EPA) and community development efforts.

The Yakutat Tlingit Tribe is deeply committed to keeping the traditional ancestral lands of the Five Chiefs pristine, thriving, and abundant. Our elders have long called these lands our refrigerator, and have taught us that we must care for the land in order for the land to care for us. Environmental stewardship is not simply a regulatory obligation for YTT - it is central to preserving Haa Shaagoon, Our Way of Life, for current and future generations.

YTT has over twenty years of proven performance under federal Cooperative Agreements with the Department of Defense through NALEMP, and continuous EPA TRP funding, completing WWII-era remediation, fuel tank removals, brownfield assessments, and long-term environmental cleanup. Combined with the Tribal Transportation Program's 113 routes requiring ongoing safety, culvert, bridge, right-of-way, and infrastructure improvements, YTT's expanding responsibilities demand fast, reliable access to technical, engineering, and environmental support - especially within Alaska's short work seasons. Establishing this IDIQ ensures uninterrupted delivery of essential services, strengthens program capacity, and supports YTT's EPA, fisheries, monitoring, stewardship, and Realty programs by enabling timely, compliant, and coordinated project execution across Tribal lands.

YTT anticipates continued investment in transportation improvements, aquatic organism passage projects, watershed restoration, environmental remediation, climate adaptation, bridge development, and transportation safety.

The selected consultant(s) shall work closely with multiple programs - the Tribal Transportation Program, the Native American Lands Environmental Mitigation Program, the Environmental Protection Agency Tribal Response Program, the Environmental Protection Agency, fisheries programs, and environmental monitoring - to advance strategic planning, funding development, permitting, design, construction, and implementation of these projects.

The resulting contract shall have a base term of three (3) years, with an option for a two-year extension. During this period, YTT intends to issue individual task orders for services as project needs arise and funding becomes available. Task orders will be issued as either lump sum or time and expenses as appropriate to each scope of work - the selected firm will prepare open book estimates for task order proposals using provided rate sheets and proposed overhead and profit markup rates as established through this proposal.

SCOPE OF SERVICES

YTT seeks a qualified consultant team to perform engineering, environmental, civil engineering, and associated services for a three-year period.

Identified technical capacities requested are as follows:

• Engineering
• Civil Engineering
• Environmental Services
• Other Technical Services

Focus Areas

• Environmental Services
• Fish Passage
• Environmental Remediation
• Infrastructure Safety
• Capacity Building

YTT programs will work with the selected team on a task order basis for project completion.

Project Types and Services Required

In addition to the scope of services above, YTT may elect to issue additional task orders for projects and services not otherwise listed. The selected engineering firm or firms must be able to provide the following types of services under this SATOC:

• Technical project management and coordination
• Technical support for grant applications and funding requests
• Strategic planning and technical project leadership
• Transportation engineering and planning
• Low-volume roads engineering, including drainage and sedimentation control using Best Management Practices
• Structural and bridge engineering
• Construction administration, oversight, and observation
• Environmental engineering and scientific analysis
• Hydraulic engineering
• Hydrology and hydrologic analysis
• Fluvial geomorphic surveying and design
• River mechanics and hydraulics
• Sanitary engineering (water/wastewater treatment)
• Bridge inspections in conformance with National Bridge Inspection Standards (routine, fracture critical, underwater, special, initial, and scour evaluations)
• Bridge load ratings and overload permit analysis
• Topographic Survey and Plating
• Aquatic Organism Passage
• Environmental surveys, permitting, and compliance monitoring
• Regulatory analysis and environmental standards development
• Environmental services for National Environmental Policy Act (NEPA) compliance
• Landfill and Solid Waste assessments, characterizations , backhaul and general planning
• Waste Characterization and profiling
• Phase I/II Environmental Site Assessment, Preliminary Assessments and Site Inspection
• Environmental Remediation Design to include groundwater and soil vapor mitigation
• CERCLA Consulting
• Hazardous Materials Survey and Assessment to include Asbestos and Lead Inspection and Assessment
• Air Quality Monitoring
• Wetland Delineation, Habitat Assessment, Fisheries and Vegetation Survey
• Geographic Information Systems and Mapping
• UAS / drone services - LiDAR, orthoimagery, other high resolution photos
• Hazard Mitigation Planning and Climate Adaptation Planning
• Cost Estimation
• Other support as needed

Initial Planned Task Orders

1. Kulixelcan River Culvert Replacements

Funded by: FHWA National Culvert Replacement and Restoration Grant Program

Term: September 2026 - December 2029

Estimated Cost Range: $250,000 - $750,00

• Task 1 Develop Engineering design and replacement for two culverts
  • Provide field services including assessments of current conditions, fish habitat, wetlands, topography, bathymetry, and archaeology. Provide surveying, permitting, environmental compliance, and engineering designs for replacement of two culverts to restore AOP. A design package including engineering plans, drawings, and specifications will be developed for each culvert replacement. The design package will be submitted for review at 30, 70, and 100-percent complete.
• Task 2: Conduct technical oversight of construction and installation of three culverts
  • Provide field observation, oversight, and technical support during construction and installation of three new culverts to restore AOP. Prepare construction completion reports for each culvert replacement
• Task 3: Conduct project management, coordination, and communication for coordination of design and construction
  • Collaborate with the Tribal Transportation Director and YTT to manage and coordinate project activities. Participate in regular project meetings to coordinate activities and address current issues and needs. Support communications and coordination with federal agencies, state agencies, and non-profit entities including U.S. Forest Service (USFS), U.S. Fish and Wildlife Service (USFWS), Alaska Department of Fish and Game (ADF&G) as required to efficiently and effectively complete the project.

1. Ankau Culvert Replacements

• Funded by: FHWA National Culvert Replacement and Restoration Grant Program
• Term: September 2026 - December 2029
• Estimated Cost Range: $250,000 - $750,00
  • Task 1 - Conduct project management, coordination, and communication.
  • Task 2 - Develop and implement a culvert assessment plan.
  • Task 3 - Develop a Strategic Plan and conduct stakeholder outreach and engagement.
  • Task 4 - Develop engineering designs and obtain permits for replacement of five culverts.
  • Task 5 - Conduct technical oversight of construction and completion of culvert installations.
  • Task 6 - Conduct performance monitoring of new culverts.

Additional future task orders may include the following:

1. Additional AOP Culvert focused work.
2. GIS mapping and training
3. Contaminated Gas Station Environmental Clean Up Design and Oversight
4. Bridge Replacement Design and Construction Admin

PROPOSAL REQUIREMENTS

Written proposals to provide the required services shall consist of:

• A PDF written proposal (8 pages)
• A combined PDF of attachments (no page limit)

Proposals must consist of the following information, in the order indicated below:

• Cover letter from the firm principal or responsible professional
• Firm(s) qualifications and experience delivering the types of projects and services described above
  • Should include client name, date completed, and size of project or contract ($)
• Experience of key staff and personnel (2)
  • Should include significant subcontractors
  • Resumes may be provided as attachments
• Combined PDF attachments, to include:
  • At least Two (2) references with contact information
  • At least Two (2) resumes for key personnel
  • Rate Schedule and Proposed Markup % to be used for task orders
  • Alaska Business License
  • Professional Engineer's License(s)

EVALUATION CRITERIA

Proposals should identify the membership and extent of the proposed team by addressing all requested capacities, capabilities, and experience, with specific focus on the following:

• Rural Southeast Alaska Experience
• Engineering
• Civil Engineering
• Environmental Services
• Other Technical Services

Proposals will be reviewed, evaluated, and scored according to the following criteria:

• Native-owned or Tribally-owned business status (15%)
• Qualifications and experience of the proposed team and key personnel (25%)
• Demonstrated experience of the proposed team in successfully delivering similar projects, including federally funded projects (20%)
• Knowledge of environmental conditions and challenges in the Yakutat region (15%)
• Experience working with Indian Tribes and Alaska Native Villages, and demonstrated success in supporting Tribes to build internal capacity and capabilities to deliver similar projects and develop their programs (15%)
• Completeness and responsiveness of the proposal (10%)

PROPOSAL SUBMITTALS

All interested vendors should register their intent to propose no later than August 10, 2026 via email to Gavin Dixon, Tribal Consultant (gavin@cumbrec.com) and Rochelle Lekanof, Tribal Transportation Director (rlekanof@ytttribe.org). All vendors shall receive an email response confirming their registration.

Any questions concerning this proposal shall be submitted in writing over email togavin@cumbrec.com and rlekanof@ytttribe.org . All responses to submitted questions, and any changes or modifications to this solicitation, will be provided in writing to all registered vendors. All proposals submitted shall include a statement confirming the proposer has read and accepts all question responses and modifications made to this solicitation.

Proposals must be received by YTT on or before 5:00 p.m. AST, August 24, 2026. Proposals shall be submitted in PDF format by email to gavin@cumbrec.com, with a subject line reading "PROFESSIONAL ENGINEERING, ENVIRONMENTAL, AND TECHNICAL SERVICES IDIQ."

PROPOSAL SCHEDULE

Milestone

Date

RFP Issued

July 29, 2026

Questions Due

August 10, 2026

Responses to Questions

August 12, 2026

Proposals Due

August 24, 2026

Selection Notification

September 4, 2026

Contract Award

September 11, 2026

REQUIRED REVIEW - PROTESTS PRIOR TO AWARD

Offerors must carefully review the RFP for defects and questionable or objectionable material. Such defects must be reported to YTT in writing and received at least seven days prior to the deadline for receipt of proposals. This will allow sufficient time for YTT to issue an addendum, if warranted, and will help prevent the evaluation of proposals based on a defective RFP. Protests based on an omission, error, or the content of the RFP will be disallowed if notice of the defect is not made as set out above.

ADDENDA TO THE RFP

Addenda to this Request for Proposals may be issued at YTT's option. An interested offeror, however, may request modifications to the scope, specifications, or administrative requirements. Final acceptance or denial of the request is the decision of YTT. Failure of YTT to respond in writing to a request for an addendum to the RFP shall be considered a rejection of the request. All addenda will be in writing and issued to all persons known to have received a copy of this RFP.<...