Attachment 1 - SOW Benton County WA 2024-2025.docx

W9127N2420004 Attachment 1

2024-2025 Statement of Work Management of Undesirable Plants on USACE Lands John Day – Willow Creek Project Benton County, Washington

DESCRIPTION OF SERVICES:

Recipient will assist the U.S. Army Corps of Engineers (USACE) with the management of undesirable plants affecting federal lands and waters managed by the Natural Resource Management section at John Day-Willow Creek Project (Project) in Benton County, Washington.

1. Coordination Assist in coordination to manage undesirable plants from a strategic regional perspective. Manage and coordinate the actions of this Cooperative Agreement with relevant County Weed Boards, Soil and Water Conservation Districts and other political subdivisions of the state.

1. Planning Assist in the development of a USACE-approved annual plan of work, identifying target species for inventory and management, prioritizing treatment based on regional plans, site location and level of infestation. Provide consultation to USACE on regional Best Management Practices including Early Detection and Rapid Response (EDRR) targets, quarantine initiatives, biological control releases, and updates to the State Noxious Weed List including new classifications, changes in classification of previously listed species, and delisting of species that have become a lower priority.

1. Surveying Assist with the inventory, survey, monitoring, and/or GIS mapping of exotic, noxious, invasive, or undesirable native vegetation at the Project. Maps, location descriptions, data and/or GIS information will be provided to the USACE Project Natural Resource Section that will aid in the management of areas under Project Management. USACE may provide a USACE-operated vessel for survey activities. Data and vessel access require coordination with the Grants Officer’s Representative (GOR).

In the Columbia River region, targets for early detection include, but are not limited to:

1. Flowering rush (Butomus umbellatus) is among the region’s highest priorities. Its presence is minimal on lands and waters managed by the Project, but vigilant surveying is required to detect and prevent further spread. It is among the region’s highest priorities for early detection because of its potential to devastate riparian habitat.

3. Implementation Assist in the implementation of the appropriate integrated treatment method as prescribed or approved by USACE biologists, natural resource specialists, natural resource managers, and coordinated with the GOR. Implementation will be aligned with the Portland District Pesticide Discharge Management Plan (PDMP, Attachment 7). Treatments may employ prevention, mechanical, cultural, biocontrol or herbicide methods. Where practicable, biocontrol methods and other effective non-herbicide methods are preferred. USACE may provide a USACE-operated vessel for treatment activities. Vessel access requires coordination with the GOR.

Specific targets at the Project include:

a. Plymouth Park - Plymouth, Washington (30 acres maximum)

i. Pre-emergent application for total vegetation control of tent pads, traffic islands and gravel areas near campsites. Work must be completed prior to the campground opening of April 15, 2024.

ii. Pre-emergent application for total vegetation control along perimeter of campground road. Establish a three-foot control area on both sides of the road.

iii. Total vegetation control along the perimeter of the day use entrance road starting at the causeway leading to the boat launch and day use parking lots. Establish a five-foot control area along perimeter of both sides of the road.

iv. Broadcast broadleaf control for dry land area around pump house and between campground and campground exit loop road.

v. Spot treat campground and day use irrigated turf, flower beds, islands, and building perimeters for broadleaves.

vi. Spot treat fisherman’s trail from swim beach parking area onto jetty for puncturevine and knapweed.

vii. Mid-summer spot treatment of road shoulders, traffic islands, dry land areas and swim beach for warm season weeds.

b. Paradise Park - near Plymouth, Washington (5 acres maximum)

i. Total vegetation control of gravel entrance road starting at the gate leading to the park. Establish a three-foot control area along perimeter of both sides of the road.

ii. Spot treat camping area inside the fence line extending south to the river shoreline.

c. Lake Umatilla Shoreline

i. EDRR for any presence of Flowering rush. A cultural clearance must be performed by USACE before any substrate-disturbing activity.

4. Reporting If chemical methods are planned during the Period of Performance, an “Anticipated Pesticide Use” report will be submitted by the recipient to the GOR, prior to implementation. An “Actual Pesticide Use” report will then be submitted by the recipient to the GOR by 15 December, outlining the actions completed each year. Templates will be provided by USACE to ensure the required data outlined in the PDMP (Attachment 7) and EPA pesticide regulations are included.

SCHEDULE:

An initial meeting between the recipient and USACE will occur within four (4) weeks of the execution of this Cooperative Agreement. A schedule will be coordinated at that time. Additional ad hoc work within the scope of this Cooperative Agreement may be requested throughout the Period of Performance as needs arise and if funding is available. Additional work will be implemented by a bilateral modification.