Addendum_1~1.pdf

ADDENDUM #1

ITB/RFP S-63500-00015960

APPLEGATE GRAVEL AUGMENTATION

DATE: March 19, 2026

This addendum modifies the Invitation to Bid (ITB) document(s) for work only to the extent indicated herein. All other areas not specifically mentioned or affected by this addendum shall remain in full force.

This addendum shall be added as a part of the original ITB document(s) and shall become part of the work required.

Deleted language is shown within [brackets and strikethrough]. New language is show in Bold and Underlined.

ADDENDUM

1. Changes to the Scope of Work (listing Attachment A – Sample Contract)

I. PROJECT TITLE: Applegate Gravel Augmentation

II. BACKGROUND or GENERAL INFORMATION and Purpose:

The Applegate Dam was completed by the Army Corps of Engineers in 1980, blocking the upper reaches of the mainstem Applegate River from spawning salmon and steelhead.

Dams and reservoirs are known to disrupt fluvial processes including the sedimentation and aggradation of cobbles and gravel, which are necessary for spawning salmon and steelhead.

This had led to the loss of spawning gravel available for salmon and steelhead in the mainstem Applegate River. Further, the Applegate River and its tributaries are known to be highly influenced by water withdrawal for irrigation needs, further constraining potential areas for salmon and steelhead to spawn.

This project aims to place 500 cubic yards of appropriately sized (1”-8”) gravel in the Applegate River, approximately 0.6 miles downstream of the Applegate Dam. Ideally the gravel be at least an 80% mix of 3”-6” rounded river gravel, though a small portion (<20%) may include some smaller or larger based on availability. The contractor must satisfy two conditions to be compliant with project permits. First, that delivery of the gravel only utilizes a “gravel carriage”, which is a unique logging yarder that moves a gravel via a carriage across the river to avoid unnecessary damage to the riparian area. Second, that only 250 cubic yards be placed each year at the project site. The project site includes two delivery locations, one for each year of the project. These are located 30 yards from each other within the Applegate River.

ADDENDUM ITB S-63500-15960 2

III. PROJECT DESCRIPTION, DESCRIPTION OF WORK and TASKS:

Project Description or Description of Work.

The selected contractor will source 500 cubic yards of appropriately sized gravel (1”-8”) from a local source and have it delivered to the project site (42.06866, -123.10823). Ideally the gravel will be at least an 80% mix of 3”-6” rounded river gravel, though a small portion (<20%) may include some smaller or larger based on availability. They will place 250 cubic yards in the Applegate River during the 2026 Applegate In-Water Work Period at the project site and at the first delivery location (map). The second placement of 250 cubic yards of gravel will occur 30 yards upstream and must occur between June 15 and June 30 of 2027. The contractor must utilize a yarder and cable system with a carriage to move the gravel and avoid riparian impacts. The contractor will further be responsible for safely moving the gravel from its staging area, into the carriage, and placing it in-stream approximately 0.6 miles below the Applegate Dam.

TASKS:

Contractor will:

1. Source 500 cubic yards of appropriately sized gravel for spawning salmonids (1”-8”) and stage it at project site. Ideally the gravel be at least an 80% mix of 3”-6” rounded river gravel, though a small portion (<20%) may include some smaller or larger based on availability. The contractor may source all 500 cubic yards in 2026 or 250 cubic yards in both 2026 and 2027 to avoid theft.

2. Place 250 cubic yards in-stream during the 2026 In Water Work Period utilizing a gravel carriage to minimize riparian impacts and meet project permitting requirements at the first delivery location.

3. Place 250 cubic yards in stream between June 15 and June 30, 2027, utilizing a gravel carriage to minimize riparian impacts and meet project permitting requirements at the second delivery location.

4. Be in charge of site safety and traffic control of potential boaters on the Applegate River.

5. Ensure gravel is spread evenly across the channel width at project locations, located at 42.06872, -123.10818 and 30 yards upstream at 42.06848, -123.1083. This will be accomplished by strategic placement utilizing the gravel carriage.

ODFW will:

1. Procure all permits and waivers for contractor to place spawning gravel in 2026 and 2027.

2. Ensure no fish are within the project zone during gravel placement.

IV. DELIVERABLES AND SCHEDULE:

• The contractor will procure 1”-8” (though 80% or greater must be 3”-6”) of rounded river gravel and stage it at the project site located .6 miles below the Applegate Dam. They may move all gravel in 2026 or half in 2026 and half in 2027 to reduce potential of theft.

• The contractor will move the staged gravel into the Applegate River utilizing a gravel carriage system between the July 1 and September 15 in 2026 at Site 1 (map)

• The contractor will move the staged gravel into the Applegate River utilizing a gravel carriage system between June 15 and June 30 in 2027 at site 2 (map).

The contractor will ensure that gravel is distributed across the width of the river at each of the project locations.

Closing Date and Time: Remain unchanged

Addendum prepared by:

Name ashley.j.kallberg@odfw.oregon.gov

END OF ADDENDUM No. 1 mailto:ashley.j.kallberg@odfw.oregon.gov

ADDENDUM ITB S-63500-15960 4

QUESTIONS AND ANSWERS:

Following are questions asked during the optional pre-bid conference held on 03/16/2026 OR received by Bidders and ODFW’s answers. The answers and clarifications provided below by ODFW are for informational purposes ONLY and DO NOT constitute a change to the terms, conditions, technical specifications, or requirements of the ITB.

QUESTIONS AND ANSWERS:

1. What is the range for the cable car?

a. Approximately 125 Yards

2. Can trees be limbed if needed?

a. Taking out low branches is ok, however if there is a need to remove a tree that will have to be signed off on by the Forest Service. Must consult ODFW first.

3. Should gravel be spread all the way to each edge?

a. Yes

4. Should all gravel be under water?

a. Ideally yes, but not required.

Note: The flows we viewed 3/17/26 on the Applegate River were at 175 Cubic Feet Per Second. Typical flows in summer from the Applegate Dam’s release is 325 Cubic Feet Per Second during the implementation window.