EXHIBIT 5_1 GENERAL AUTHORIZATION.pdf

OREGON DEPARTMENT OF STATE LANDS

GENERAL AUTHORIZATION ELIGIBILITY DETERMINATION

DSL File #: 66335-GA County: Douglas Notification Received Date: 09/15/2026 Issue Date: 10/5/2026 Expiration Date: 10/5/2029 (cannot be renewed)

Project Information Responsible Party: ODOT Project Name: Test Drill Sites, US 101 Umpqua River Bride Project Address, or location description: Umpqua River, RM 10.8, Below US 101 Bridge MP 211.2 Legal Description: T21, R12W, Section 35, Tax Lot(s) WATER Latitude, Longitude: 43.709900, -124.100800

GA Activity Type(s) Minimal Disturbance within ESH Waterway Habitat Improvement Over-Water Structures Fill and Removal Wetland Ecosystem Improvement Temporary Impacts to Wetlands and Waterways Certain Voluntary Habitat Restoration

Activities Waterway Bank Stabilization Using Bioengineering

DSL Eligibilty Determination Details In-Water Work Period: Nov. 1 to Jan. 31

Activity on State-owned Waterway

Short Term Access Agreement attached Proprietary Auth in DSL File #: 53507-EA

Further Action Required by Applicant BEFORE Starting Work Obtain DSL Proprietary Authorization Registration Lease/License Other Contact DSL Proprietary Staff at:

Contact DSL Registration Staff at:

Contact ODFW to determine if you need Oregon Rescue/Salvage Permit:

(Temporary Impacts to Wetlands and Waterways GA only)

Post-Project Report Required from Applicant

Submit post-project report to DSL within 90 days of rectification (see OAR141-089-0715(9)).

(Temporary Impacts to Wetlands and Waterways GA only)

Submit post-project report to OWEB at http://www.oregon.gov/OWEB upon project completion.

(Waterway Habitat Improvement & Wetland Ecosystem Improvement GAs only)

Eligible if the project is constructed as proposed in the application notification received on the date stated above AND if project complies with all attached conditions.

DSL Staff Signature & Date: __ ___10/5/2026 951 SW Simpson Ave., Suite 104, Bend, OR 97702, Phone: 541-388-6112

General Authorization Conditions

141-089-0650

The following conditions apply to all individual GAs, unless otherwise specified in an individual GA or a notification under OAR 141-089-0640(3)(a):

(1) Copy of Approved Determination for Inspection. A copy of the determination under OAR 141-089-0640(3)(a) must be available at the work site whenever the project is being conducted.

(2) Local Government Approval Required Before Beginning Work. Prior to the start of work, the responsible party must obtain local government land use approval, where applicable.

(3) Lower Willamette River Management Plan (LWRMP or Plan; OAR 141-080) Consistency. For projects within the purview of the LWRMP, the project must comply with the LWRMP without the need for a minor exception, unless preapproved by the Director, or major exception as described in the Plan.

(4) Site Access Required. Employees of the Department and all authorized representatives must be permitted access to the project area at all reasonable times for the purpose of inspecting work performed on the project.

(5) Hazards to Recreation, Navigation, and Fishing. The project must be timed so as not to interfere with or create a hazard to recreational and commercial navigation and fishing.

(6) Work Period in Jurisdictional Areas. Project activities below the ordinary high water line or highest measured tide line must be conducted consistent with “Oregon Guidelines for Timing of In-Water Work to Protect Fish and Wildlife Resources”, Oregon Department of Fish and Wildlife, March 2024, or other recommendations provided by ODFW included in a response to a notification. Project activities are prohibited when fish eggs are present at the project site.

(7) Preconstruction Resource Area Fencing or Flagging. Prior to any site grading, the boundaries of any avoided wetlands, waterways, and riparian areas adjacent to the project site must be surrounded by noticeable construction fencing or flagging. There must be no vegetation removal or heavy equipment within marked areas. The marked areas must be maintained during construction of the project and be removed immediately upon project completion.

(8) Erosion Control Methods. The following erosion control measures must be installed at the project site prior to construction and maintained during and after construction to prevent erosion and minimize movement of soil into waters of this state:

(a) All exposed soils must be stabilized during and after construction in order to prevent erosion and sedimentation;

(b) Filter bags, sediment fences, sediment traps or catch basins, leave strips or berms, or other measures must be used to prevent movement of soil into waterways and wetlands;

(c) To prevent erosion, use of compost berms, impervious materials, or other equally effective methods, must be used to protect soil stockpiled during rain events or when the stockpile site is not moved or reshaped for more than 48 hours;

(d) Unless part of the permanent fill, all construction access points through, and staging areas in, riparian and wetland areas must use removable pads or mats to prevent soil compaction. However, in some wetland areas under dry summer conditions, this requirement may be waived upon approval by the Department. At project completion, disturbed areas with soil exposed by construction activities must be stabilized by mulching and native vegetative plantings/seeding. Sterile grass may be used instead of native vegetation for temporary sediment control if native vegetation is unavailable. If soils are to remain exposed for more than seven days after completion of the permitted work, they must be covered with erosion control pads, mats, or similar erosion control devices until vegetative stabilization is installed;

(e) Where vegetation is used for erosion control on slopes steeper than 2:1, tackified seed mulch must be used so the seed does not wash away before germination and rooting;

(f) Dredged or other excavated material must be placed on upland areas having stable slopes and must be prevented from eroding back into waterways and wetlands;

(g) Erosion control measures must be inspected and maintained as necessary to ensure their continued effectiveness until soils become stabilized; and

(h) All erosion control structures must be removed when the project is complete and soils stabilized and vegetated. If necessary, removal of erosion control structures may be performed after expiration of the approved OAR 141-089-0640(3)(a) determination.

(9) Hazardous, Toxic, and Waste Material Handling. Petroleum products, chemicals, fresh cement, sandblasted material and chipped paint, wood treated with leachable preservatives or other deleterious waste materials must not be allowed to enter waters of this state. Machinery refueling is to occur at least 150 feet from waters of this state and confined in a designated area to prevent spillage into waters of this state. Barges must have a containment system to effectively prevent petroleum products or other deleterious material from entering waters of this state. Project-related spills into waters of this state or onto land with a potential to enter waters of this state must be reported to the Oregon Emergency Response System (OERS) at 1-800-452-0311.

(10) Archaeological Resources. If any archaeological resources, artifacts, or human remains are encountered during construction, all construction activity must immediately cease, and the State Historic Preservation Office must be contacted. The responsible party may be contacted by a Tribal representative if it is determined by an affected Tribe that the project could affect Tribal cultural or archeological resources.

(11) Construction Corridor. There must be no removal of vegetation or heavy equipment operating or traversing outside the designated construction corridor or footprint.

(12) Raising or Redirecting Water. The project must not cause water to rise or be redirected and result in damage to structures or property.

(13) Waste Disposal. Old piling, spoil material, and other waste material discarded by the project must be disposed of in an appropriate disposal facility. There must be no temporary storage of piling, spoils, or other waste material below top of bank, in any wetland, Federal Emergency Management Administration designated floodway, or an area historically subject to landslides. For the purposes of this general condition, “spoil material” means any material displaced by construction (e.g., soil, sand, gravel, etc.)

and is not intended to be re-incorporated into the project.

(14) Operation of Equipment in the Water.

(a) Heavy equipment may be positioned on or traverse the project area below ordinary high water line or highest measured tide line only when the project area is free of flowing or standing water or if the area is isolated from the waterway and aquatic organism salvage is completed. For the purposes of this general condition, “aquatic organism” means all fish species (including lamprey), freshwater mussels, clams, and crayfish; and any other species as may be identified in a Rescue/Salvage Permit.

(b) All machinery operated below ordinary high water line or highest measured tide line must use biodegradable hydraulic fluids, be steam cleaned and inspected for leaks prior to each use, and be diapered to prevent leakage of fuels, oils, or other fluids below ordinary high water line or highest measured tide line. Any equipment found to be leaking fluids must be immediately removed from and kept above the ordinary high water line or highest measured tide line until repaired.

(15) Fish Passage Required. The project must meet ODFW requirements for fish passage, ORS 509.585.

(16) Temporary Ground Disturbances. Unless otherwise approved by the Department, all temporarily disturbed project areas must be returned to original ground contours and seeded upon completion of ground disturbing actions, and planted with woody vegetation, as appropriate, by March of the year following construction completion.

(17) Nonnative Species. The project will not involve the introduction of nonnative plants other than for temporary soil stabilization. Native seed mixes are preferred. When native seed mix is not available, nonnative seed mix that will hold the soil and not persist may be used if certified free of noxious weeds.

(18) Irrigation. Where power and irrigation water can be made available, irrigation must be provided as necessary until vegetation is established. Irrigation structures must be removed when no longer needed. Invasive weed control must additionally be provided until native vegetation is established.

(19) Invasive Species. Persons must control invasive species and comply with Oregon’s weed laws (ORS Chapters 452, 561, and 570).

(20) DSL May Halt or Modify. DSL retains the authority to temporarily halt or modify the project in case of unforeseen damage to natural resources.

Temporary Impacts to Wetlands and Waterways GA

141-089-0700 Temporary Impacts to Wetlands and Waterways – Purpose OAR 141-089-0700 to 141-089-0715 set forth the conditions under which a person may, without an individual removal-fill permit, general removal fill permit, or DEQ remedial action permit waiver from the Department, temporarily fill or remove material in wetlands and waterways.

141-089-0705 Temporary Impacts to Wetlands and Waterways – Eligibility Requirements To be eligible, a project must adhere to the following:

(1) Wetland Conversion. The project must not convert forested or shrub wetlands to a different Cowardin class nor may it convert any wetland class to open water. The project must not permanently convert waters to upland.

(2) Wetland Delineation and Concurrence. For temporary impacts to wetlands, a copy of a valid, Department-approved wetland delineation map and concurrence letter must be provided with the notification pursuant to OAR 141-089-0640, unless otherwise directed by the Department.

141-089-0710 Temporary Impacts to Wetlands and Waterways – Authorized Projects Project activities are limited to the following.

(1) Temporary impact of 0.50 acres or less of nontidal wetlands;

(2) Temporary impact of 0.20 acres or less of tidal wetlands;

(3) Placement and removal of structures necessary to isolate a work area from a waterway and conduct fish and wildlife salvage not to exceed 100 linear feet measured at the longest length of isolated work area below the ordinary high water line; and

(4) The temporary placement of spud piles (i.e., piles driven into the bed of a waterway to provide stability for a floating work platform) during construction activity.

141-089-0715 Temporary Impacts to Wetlands and Waterways – Project-Specific Conditions

(1) Project activities must adhere to the general conditions in OAR 141-089-0650 and the following project-specific conditions:

(2) Temporary waterway structures for work area isolation must be placed to:

(a) Maintain near-normal downstream flow for the duration of placement and return flow to preconstruction conditions at project completion.

(b) Not be channel-spanning, unless otherwise approved by the Department.

(c) Not be eroded by expected high flows for the duration of placement.

(d) Not dewater any wetlands, unless otherwise approved by the Department as an eligible temporary impact.

(e) Provide for fish and wildlife salvage, rescue, and relocation prior to commencement of any in-water work.

(f) An Oregon Rescue/Salvage Permit from ODFW is required to conduct fish and wildlife salvage (OAR 635-412-0035) and additional authorization may be required from the National Marine Fisheries Service (NMFS) or U.S. Fish and Wildlife Service (USFWS) if federal Endangered Species Act (ESA)-listed species will be affected.

(3) Temporary placement of spud piles for construction platform anchoring may only occur where the platform will not be grounded on the bed or banks of the waterway at any time.

(4) Protection of Wetland Ground Surface. Before placing temporary fill in wetlands, fabric must be placed to allow complete removal of all temporary materials from the wetlands. If necessary to assist with removal of the fill, chain link fence or similar material may be placed under the fill. All fabric, fencing and other materials must be completely removed at project completion.

(5) Trenching in Wetlands. If there is trenching or excavation in wetlands, the top layer of soil must be separated from the rest of the excavated material and put back on top when the trench or pit is backfilled. If the native underlying soils are not used as bedding material and a coarser nonnative soil or other material is used, preventative measures such as clay or concrete plugs must be used so that underground hydraulic piping does not dewater the site and adjacent wetlands.

(6) Temporary Impact Rectification. Rectification of temporary impacts includes re-establishment of pre-existing contours and pre-existing vegetation.

(7) Timing of Temporary Wetland Impact Rectification. Notwithstanding the definition of “Temporary Impacts” in OAR 141-085-0510, the reestablishment of preconstruction contours and planting to revegetate temporarily disturbed wetland areas must be completed within 12 months of the initial impacts or before the expiration of the OAR 141-089-0640(3)(a) determination, whichever comes first, unless otherwise approved by the Department. Planting must include species of sufficient number, spacing, and diversity to replace affected aquatic functions.

(8) Timing of Temporary Waterway Impact Rectification. Reestablishment of preconstruction contours and planting to revegetate temporarily disturbed waterway areas must be completed immediately upon project completion or before or expiration of the OAR 141-089-0640(3)(a) determination, whichever comes first, unless otherwise approved by the Department. Planting must include species of sufficient number, spacing, and diversity to replace affected aquatic functions.

(9) Rectification Monitoring Report Required. Unless otherwise directed by the Department, a rectification report demonstrating restoration of predisturbance grades and revegetation must be provided to the Department within 90 days of temporary impacts rectification. The rectification report must include:

(a) Cover sheet including authorization number, responsible party’s name, current contact information, monitoring date, and report submittal date.

(b) A description of any deviation in the temporary impact size or locations as described in the OAR 141-089-0640(3)(a) determination. Any deviations mut be accompanied by a scaled drawing or map that illustrates the deviation area(s).

(c) A description of any deviation to the restoration of preconstruction grades or revegetation.

(d) For temporary wetland impacts: data plots, according to OAR 141-090, to confirm that the wetland area temporarily impacted by the project meets wetland criteria.

(e) Representative photographs (with photo point locations illustrated) clearly showing conditions within the rectification area(s).

Minimal Disturbance Activities

141-089-0660 Minimal Disturbance within ESH – Purpose OAR 141-089-0660 to 141-089-0675 set forth the conditions under which a person may, without an individual removal-fill permit, general removal-fill permit, or DEQ remedial action permit waiver from the Department, fill or remove material for a project within waters of this state designated ESH. Temporary impacts to wetlands or waterways associated with a project may be authorized by combining this GA (OAR 141-089-0660, et seq.) with the Temporary Impacts to Wetlands and Waterways GA (OAR 141-089- 0700, et seq.).

141-089-0665 Minimal Disturbance within ESH – Eligibility Requirements Activities are limited to the five authorized projects described in OAR 141-089-0670 within designated ESH waters for a project.

141-089-0670 Minimal Disturbance within ESH – Authorized Projects Project activities are limited to the following:

(1) Investigative Drilling and Sampling. Not more than 10 cubic yards of removal and fill for investigative drilling and sampling to gather necessary technical data for designing structures or characterizing sediments.

(2) Scientific Measurement. Not more than four cubic yards of removal and fill at any individual site and, cumulatively, not more than 10 cubic yards of removal and fill for the installation, removal, construction, and maintenance of scientific measurement devices, including staff gages, tide gages, water recording devices, water quality testing and improvement devices, and similar structures, whose purpose is to measure and record scientific data.

(3) Surveys For Historical Resources. Not more than four cubic yards of removal and fill at any individual site and, cumulatively, not more than 10 cubic yards of removal and fill for surveys conducted for historical resources.

(4) Maintenance and Reconstruction of In-Water Structures. Not more than ten cubic yards of removal and fill necessary to maintain or reconstruct the serviceability of existing man-made structures below ordinary high water line or highest measured tide line and not otherwise exempted by OAR 141-085-0530.

(5) Beaver Pond Levelers and Exclusion Devices. Unless otherwise approved by the Department, not more than two cubic yards of removal and fill at any individual site and, cumulatively, not more than five cubic yards of removal and fill, for fence and pipe devices to control beaver pond water elevation or exclude beaver damming activity in or adjacent to culverts.

141-089-0675 Minimal Disturbance within ESH – Project-Specific Conditions

(1) Projects eligible for this GA must adhere to the general conditions in OAR 141- 089-0650 and the following project-specific conditions:

(2) Maintenance and reconstruction projects are conditioned as follows:

(a) “Maintenance” has the same meaning as OAR 141-085-0510;

(b) “Reconstruction” has the same meaning as OAR 141-085-0510;

(c) The structure was serviceable within the last five years; and

(d) The maintenance or reconstruction would not significantly adversely affect wetlands or other waters of this state to a greater extent than the wetlands or waters of this state were affected as a result of the original construction of those structures.

(3) Scientific Measurement. All scientific measurement devices, including all associated structures and fills including anchoring devices, buoys, and cables, must be removed within 30 days after the research is completed. Where necessary, removal of devices may occur after expiration of a determination pursuant to OAR 141-089- 0640(3)(a) without further authorization requirement.

(4) Surveys for Historical Resources. All in-stream exploratory excavation must be isolated from the active channel.

(5) Investigative Drilling and Sampling. Existing roads, paths and drilling pads must be used where available. Temporary placement of mats is allowed to provide site access. Temporary mats must be removed upon completion of the project. Drill holes must be refilled in accordance with Oregon Water Resources Department requirements.

(6) Maintenance and Reconstruction of In-Water Structures. Notwithstanding the definition of “reconstruction” in OAR 141-085-0510, reconstruction does not need to be in-kind if the existing structure contains deleterious materials (e.g., concrete, metals, plastics, angular rock) that will be removed and reconstructed with environmentally preferable materials (e.g., untreated wood, gravel, boulders).

(7) Beaver Pond Levelers and Exclusion Devices. At such time that the device(s) are no longer required due to beaver abandonment or removal, or the adverse effects of damming activity have otherwise been resolved, the device(s) must be removed from the waterway. Where necessary, removal of devices may occur after expiration of a determination pursuant to OAR 141-089-0640(3)(a) without further authorization requirement.

State-Owned Waterway Short-Term Access Agreement OAR 141-125- For General Authorization #: 66335-GA On Waterbody: Umpqua River Responsible Person: Peter Samarin

By acting under the referenced General Authorization, the Responsible Person agrees to the following terms and conditions:

The STATE OF OREGON, Department of State Lands, GRANTOR, hereby grants to the Responsible Person of the referenced General Authorization, hereinafter called “GRANTEE”, a Short Term Access Agreement, as described in section #3 “Project Location Information” of the General Authorization Eligibility Verification Form, hereinafter called “Lands in Use”.

Which are subject to the following terms and conditions:

1. GRANTOR hereby grants to GRANTEE a Short Term Access Agreement upon the Lands in Use at any time from the anticipated start and completion times of this project as described in section #4 “Project Information” of the General Authorization Eligibility Verification Form in order to complete the “Activities of this Project” as described in section #5 of the General Authorization Eligibility Verification Form, and further, the GRANTOR does hereby covenant that he is the lawful owner of a sufficient estate in the said Lands in Use to enable him to give the permission herein granted and that the said Lands in Use are free from any encumbrances which would interfere with the said permission.

2. This Short Term Access Agreement includes the right to ingress and egress on other lands of the GRANTOR described above, providing that the GRANTOR is given notification of such ingress and egress and such ingress and egress is approved by the GRANTOR, and provided such ingress and egress is necessary and not otherwise conveniently available to GRANTEE, and a Short Term Access Agreement for persons, pipelines, machinery and/or other equipment, over and across said Lands along such routes as may be necessary for the hereinabove stated purpose. Upon request of GRANTOR, GRANTEE shall provide GRANTOR with copies of all work plans (and other documents describing the nature and location of the work), validated analytical data generated by the work, and all final reports summarizing such analytical data and any maintenance and monitoring activities as soon as practicable following their completion and/or issuance.

3. GRANTEE shall comply with all applicable local, state and federal laws and regulations affecting the Lands in Use and the use thereof, including local comprehensive land use planning and zoning ordinances, and correct at GRANTEE’S own expense, any failure of compliance created through GRANTEE’S fault or by reason of GRANTEE’S use:

Dispose of all waste in a legal and proper manner and not allow debris, garbage or other refuse to accumulate within the Lands in Use; provided that, if GRANTEE allows debris, garbage or other refuse to accumulate within the Lands in Use, State shall have the right to remove the debris, garbage and other refuse, and collect the cost of such removal from

GRANTEE;

Conduct all operations within the Lands in Use in a manner that conserves fish and wildlife habitat, protects water quality, and does not contribute to soil erosion or the infestation or spread of noxious weeds;

And, if applicable; maintain all buildings, docks, pilings, floats, gangways, similar structures, and other improvements located within the Lands in Use in a good state of repair; and

Not unreasonably interfere with the public’s trust rights of commerce, navigation, fishing or recreation.

4. Submerged/Submersible Only In addition to any other applicable laws and regulations, GRANTEE shall comply with Oregon Department of Environmental Quality and Oregon State Marine Board requirements for sewage collection and waste water disposal for boats and floating structures.

5. If historic or prehistoric artifacts are encountered during a project, all construction activity in that location must stop immediately. Call the State Historic Preservation Office (SHPO) at

(503) 986-0674 and DSL Archaeologist at (541) 388-6204. If human remains are encountered, stop work immediately, cordon off the site, do not touch, remove or photograph the remains.

Immediately call the State Police - (503) 731-4717, SHPO and the Legislative Commission on Indian Services (LCIS) at (503) 986-1067.

6. GRANTEE shall not use, store, or dispose of, or allow the use, storage, or disposal within the Lands in Use of any materials that may pose a threat to human health or the environment, including without limitation, pollutants, hazardous solid waste, hazardous substances, pesticides, herbicides, or petroleum products (a “Hazardous Substance”) except in strict compliance with applicable laws, regulations and manufacturer’s instructions and shall take all necessary precautions to protect human health and the environment and to prevent discharge or release of any Hazardous Substance to the environment from the Lands in Use.

GRANTEE shall keep and maintain accurate and complete records of the amount of all such pollutants, hazardous solid waste, hazardous substances, pesticides, herbicides, or petroleum products (a “Hazardous Substance”) stored or used on the Lands in Use, and shall immediately notify State of any release or threatened release of any such Hazardous Substance to the environment from the Lands in Use or otherwise attributable to operations or activities on the Lands in Use.

In the event any pollutants, hazardous solid waste, hazardous substances, pesticides, herbicides, or petroleum products (a “Hazardous Substance”) is released, GRANTEE shall promptly and fully remediate such release in accordance with State and federal regulations and requirements. If GRANTEE fails to so remediate, State shall have the right to remove and remediate any release of a Hazardous Substance on the Lands in Use or attributable to operations or activities conducted or allowed by GRANTEE on the Lands in Use and to collect the cost of such removal or remediation from GRANTEE.

In addition to any duty to indemnify described elsewhere in this Short Term Access Agreement, GRANTEE shall indemnify State against any claim or costs arising from or related to a release of a pollutants, hazardous solid waste, hazardous substances, pesticides, herbicides, or petroleum products (a “Hazardous Substance”) on or from the Lands in Use.

7. All tools, equipment, and other property belonging to GRANTEE taken upon or placed upon the land by GRANTEE shall remain the property of GRANTEE and may be removed by GRANTEE at any time within a reasonable period after the expiration of this Short Term Access Agreement.

8. GRANTEE agrees to defend, indemnify and hold State harmless from and against all claims, demands, actions, suits, judgment, losses, damages, penalties, fines, costs, and expenses

(including expert witness fees and costs and attorney’s fees in an administrative proceeding, at trial, or on appeal) arising from or attributable, in whole or in part, to the access agreement or any operations conducted or allowed by GRANTEE on the Lands in Use. As used in this Section 7.0 only, “State” means the State of Oregon and its boards, commissions, agencies, officers, employees, contractors, and agent.

This Short Term Access Agreement may be cancelled by GRANTOR after thirty (30) days written notice to GRANTEE for noncompliance with the above conditions or any lawful requirement.

Department of State Lands

Authorized Signature

Jackson Morgan Printed Name 10/5/2026 Date