Project View

Project: Agreement No. 18
Dayton Juvenile Pond = Renovation=20 & Outlet Structure Replacement
Jul 01, 2006 - Jun 30, 2007

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Taken=20 By Matt Rajnus

Taken=20 By Mark Schuck

Organization
Walla Walla County

Objectives
Implement the Watershed Plan developed = under=20 90.82.

Description
The project is to renovate a juvenile = fishing=20 pond within the City of Dayton, WA. The pond lies next to the = Touchet=20 River and utilizes an existing water right from ECOLOGY to fill = and=20 maintain the pond. The pond consists of two separate basins (North = and=20 South) separated by a small concrete box culvert. It was = constructed in=20 the 1950s, and has become shallow and weedy, causing in-pond = summer water=20 temperatures to rise, and the temperature of water returning to = the=20 Touchet River to be outside of State standards. Neither the inlet = nor=20 outlet structures were properly designed to meet current = requirements for=20 a river containing ESA listed salmonid populations; i.e. - exclude = native=20 fish from entering the pond and retain planted catchable fish in = the pond.=20 ESA listed populations of bull trout and summer steelhead use the = Touchet=20 River in the vicinity of the pond as a migratory corridor, and = steelhead=20 and rainbow trout also spawn and rear in the area. Spring Chinook = salmon=20 have been documented spawning upstream and downstream of the pond = outlet=20 in 2001, and salmon have been observed in the river three of the = five=20 years since then.

Renovation of the pond has begun with = completion=20 of a fully screened state-of-the-art water supply system in May = 2006. To=20 complete the renovation, construction and installation a new = outlet=20 structure to allow bottom water withdrawal (rather than the = current=20 surface overflow pipe) from the pond (to be completed primarily = with DOE=20 grant funds) and improve general maintenance, along with = excavation of=20 approximately 4,000=E2=80=935,000 cubic yards of accumulated = sediments from the=20 pond (to be completed primarily with local contributions and = Dayton City=20 Council Park funds) will be completed. Design, construction, and=20 installation of a new outlet structure represents the largest = materials=20 outlay. Excavation and recontouring of the pond will be scheduled = during=20 fall if possible, to coordinate with outlet structure completion = and=20 installation. This is a cooperative effort between the City of = Dayton,=20 Citizens for Community Projects, and the Dayton community . =

High=20 water temperature exacerbated by low summer stream flows limits = the extent=20 and quality of salmonid habitat in the Touchet River. Return flow = from the=20 Dayton Juvenile pond likely contributes to this problem. = Renovation of the=20 pond by excavating to increase maximum pond depth and decreasing = the=20 proportion of shallow pond area, along with installation of a = modern=20 screened pond-bottom-withdrawal outlet structure will allow = greater flow=20 through the pond and the return of cooler water to the Touchet = River.=20 Decreased water temperatures will improve rearing conditions in = the river=20 below the pond for juvenile steelhead that use the Touchet River = for 11=20 miles below the City of Dayton for spawning and = rearing.

Sponsors/Funding Sources
Washington State Department = of=20 Ecology

Status
Completed on 6/30/2007

Funding Summary

Income: $14,920.00

Expenses: ($14,919.99)

Balance: $0.01

Partners
Dayton Citizens for Community = Projects

Land Owners/Cooperators
City of Dayton

Location

Dayton    US WA Cities

Columbia County    US WA Counties

Walla Walla    US WA WRIA

Lower North Fork Touchet River    USGS Level 6 Hydro=20 Regions

Control Areas
WRIA 32 (GeoPolitical = Boundaries)

Notes
Task C 1 - Design Outlet Structure
The = adaptation=20 of a generic WDFW Pond outlet structure design to this site will = be=20 completed outside of the scope of this contract, in coordination = with=20 Citizens for Community Projects, the City of Dayton and a WDFW = Habitat=20 Engineer/Permit Biologist. The blueprint design and materials list = will be=20 available to this project by August 31, 2006. No funds from this = project=20 will be used to secure this design outlet structure, nor will any=20 volunteer time or goods and services attributable to this task be = used to=20 provide match. This task however is integral to the project and is = valued=20 at $3,000.

Estimated Cost: Donated = goods/services

Task C 2 -=20 Complete Environmental Review and obtain permits
C2.1 - = Complete SEPA=20 review
C2.2 - Complete JARPA for WDFW Hydraulics Project=20 Approval
C2.3 - Contact Columbia County and obtain Shorelines = Permit=20 approval
C2.4 - Contact US Corps of Engineers to confirm lack = of need=20 for 404 permit

Deliverables: Completed SEPA Application, = State=20 Hydraulics Permit, Columbia County Shorelines Permit, Deferral of = 404=20 need/applicability by US Army Corps of Engineers

Due Date: = Environmental review and permits by August 31, = 2006.

Estimated=20 Cost: Donated goods/services

Task C-3 - Construct and = Install=20 Outlet Structure and excavate and re-contour North Pond
C3.1 = =E2=80=93=20 Advertise and select qualified contractor for personal services=20 contract
C3.2 - Construct, deliver, and install outlet=20 structure
C3.3 - Excavate and re-contour North=20 pond

Deliverables: Advertisement for personal services = contract by=20 August 31, 2006; Photographs of completed and installed outlet = structure=20 and before/after photographs of excavated and re-contoured pond by =

Due Date: October 31, 2006.

Estimated Cost: = $14,920; match=20 contributions provide for $1,658 toward the additional cost of = this task=20

Task C-4 - Environmental and project effect = monitoring
C4.1 -=20 Deploy intake and outlet thermographs for approximately two weeks = during=20 summer 2006 and prior to cessation of water flow to document water = temperature raise from pond.
C4.2 - Ensure project compliance = with HPA=20 and Shorelines permit requirements.
C4.3 - Deploy intake and = outlet=20 thermographs after completion of project to document water = temperature=20 raise during the pond=E2=80=99s operational period of 2007 = (Generally March 1 =E2=80=93=20 July 15). Compare pre and post construction project effects on = pond=20 effluent water temperature.

Deliverables/Due Date: = Project=20 water temperature data by September 30, 2006. Documentation of = compliance=20 as required by permits by October 31, 2006. Post project report=20 summarizing beneficial project effects by June 30, = 2007.

Estimated=20 Cost: Donated goods/services

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