Infrastructure design improvements at Springfield Hatchery
Salmonid Hatcheries and Harvest Management
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| 017 14 HA | | - | | 03/05/2020 | | 05/20/2020 | | 2014 | | Completed | | 01/31/2024 | | |
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Description
The Infrastructure Design Improvements at Springfield Hatchery project provided a final design for an enhanced pollution abatement effluent system. The engineered designs detail a new system capable of handling an inflow rate of 800 gpm, which is an upgrade from the current 200 gpm capability. Implementation of these designs will enhance facility biosecurity and further advance IDFG’s ability to provide the most optimal rearing facility for ESA listed Snake River Sockeye, with the ultimate goal of moving the recovery program towards Phase 3. The designed system will greatly decrease the time the Springfield Hatchery staff are in contact with Sockeye fry during daily indoor rearing area cleaning operations. This is due to upsized effluent piping and a larger pollution abatement pond, which will allow for multiple (up to 4) early rearing units to be cleaned at the same time without the concern of wastewater backing up into adjacent rearing units, which is the current problem. The new system will also minimize stress on the fish, while allowing for more time to provide critical feeding events to ensure proper size targets are met. With the final bid set in hand, IDFG is confidently prepared to move into implementation and construction of the design.
Project Benefit
This project will benefit the early rearing health and survival of ESA listed Snake River Sockeye Salmon. Reduced stress and increased survival will help ensure the Snake River Sockeye Salmon Captive Broodstock project meets juvenile survival targets (i.e., >85% egg-fry survival) specified in the HGMP (IDFG 2012), and meet recovery targets outlined in the Springfield Hatchery Master Plan (IDFG 2010) by achieving an average smolt-to-adult survival rate of 0.5%. Funding Details |
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| PCSRF | $78,302 |
| Report Total: | $78,302 |
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Worksites
WS-1
- Worksite Identifier: WS-1
- Start Date: 03/04/2020
- End Date: 06/30/2020
Area Description
No Area Description data was found for this worksite.
Location Information
- Basin: Upper Snake (170402)
- Subbasin:
- Watershed:
- Subwatershed:
- State: Idaho
- Recovery Domain:
- Latitude: 43.0615
- Longitude: -112.6543
ESU
- Snake River Sockeye Salmon ESU
Map
Photos
Metrics
Metrics
- D.0
Salmonid Hatcheries and Harvest ManagementY (Y/N)
- . . D.0.a
Hatchery and harvest mgmt. funding 78,302.00
- . . D.0.b
| Complement habitat restoration project | |
| None |
- . . D.0.c
| Project Identified in a plan or watershed assessment. | |
| National Marine Fisheries Service. 2015. ESA recovery plan for Snake River sockeye salmon (Oncorhynchus nerka) |
- . . D.1
Hatchery Production ProjectY (Y/N)
- . . . . D.1.a
Hatchery Production Funding 78,302.00
- . . . . D.1.c.1
Hatchery operations - facility or equipmentY (Y/N)
- . . . . . . D.1.c.2
| Description of the facility modification and/or equipment purchase | |
| Note- this funding was for design only. This project is consistent with Phase 2 of the 2015 ESA Sockeye Recovery Plan goal to produce up to 1,000,000 sockeye smolts annually. The objective of Phase 2 is re-colonize the habitat by producing greater numbers of smolts to increase the number of returning anadromous adults to Redfish Lake. This increased production was accomplished with the construction of Springfield Hatchery in 2013. In December 2013, hatchery staff observed waste water backing up into adjacent vats when they cleaned two or more vats simultaneously. This backflow indicated that the waste effluent piping conveying water from the early rearing tanks to the single-cell clarifier (i.e. settling basin) was undersized, compromised or both.
In response, the contractor installed an approximately 500 gallon pre-cast vault in-line with the pipe upstream of the clarifier, with a VFD pump on a variable frequency drive to meter flows into the single-cell clarifier to a maximum rate of 200 gpm. This rate of flow is the maximum flow that the clarifier is designed to accommodate.
However, waste water continued to flow up into the adjacent vats when two early rearing tanks were cleaned concurrently. The contractor then installed an 1,000 gallon pre-cast vault adjacent to the 500 gallon vault, to serve as holding tanks for incoming waste effluent. A submersible pump was used to continuously transfer 200 gpm into the clarifier. Despite the installation of 1,500 gallons of effluent storage, the backflow issue was not resolved.
Staff began using an aluminum “stamp” on a handle to partially cover the three inch diameter waste effluent discharge hole at the bottom of an early rearing tank to reduce flow into the effluent system and prevent continued backflow of waste water during cleaning. However, this stamp also reduces the suction in the vat, reducing the effectiveness of cleaning activities and increasing the time it takes to complete them.
In addition to reduced efficiency, waste is discharged directly into receiving waters. Early rearing tanks receive a maximum flow of 167 gpm. This maximum flow occurs for approximately one month during the early rearing cycle. The current procedure utilizing the “stamp” to downsize the effluent system does not draw down the water level in an early rearing tank during this time period. This lack of draw down allows waste water to flow directly over the standpipe during cleaning. Water flowing over the standpipe is conveyed directly to receiving waters without effluent treatment. Therefore, the current cleaning procedure for early rearing tanks is inefficient, ineffective, violates proper bio-security protocols, and has the potential to violate NPDES permit guidelines.
The project design and cost estimate for an increased capacity early rearing effluent system to accommodate 800 gpm has been provided to IDFG. The completed project design outlines improvements to the effluent system to satisfy the objectives of ESA Sockeye Salmon Recovery Plan (Phase 2), Northwest Power Planning Council, and Bonneville Power Administration’s Asset Management Strategic Plan. The design increases the capacity of the effluent system to improve bio-security and fish health by reducing the time required to complete, and increasing the effectiveness of, cleaning activities. These improvements will also eliminate cross-contamination of waste water among early rearing vats, and eliminate the potential for NPDES non-compliance due to overflow during cleaning.
Finally, improvements to the early rearing effluent system will maximize hatchery workload efficiency and effectiveness. After design implementation and construction completion, the effectiveness of increasing the capacity of the early rearing effluent system will be assessed through NPDES compliance, fish health screenings, and monitoring of life-stage survivals through rearing and post-release.
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- . . . . . . D.1.c.3
Funding for facility equipment or structures 78,302.00
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