[env-trinity] [EXTERNAL] River flow reduced due to oil leak at power plant

Michael Dixon mdixon at usbr.gov
Sun May 5 10:58:59 PDT 2019


As of Friday, the hope is that they will know if a repair is effective by
the end of the coming week. In the interim, we are synced back with the
TMC-recommenced hydrograph which will slowly decline to about 2400 until a
third and final geomorphic peak starts on May 15. The water that was not
released earlier when flows crashed will be incorporated into that last
peak. That is, if the repair works and the hollow jet valves are available.

Mike Dixon

Sent from my iPhone

On May 5, 2019, at 08:26, Tom Stokely <tstokely at att.net> wrote:

Does anybody know when the repair will be completed and river flows
returned back to normal?

TS
http://www.trinityjournal.com/news/local/article_804f1040-6c51-11e9-8303-cff9868ed5fe.html

River flow reduced due to oil leak at power plant

   - May 1, 2019 Updated May 1, 2019
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[image: Hollow jets]

This 2017 photo shows the hollow jet valves, which are one of the ways to
release water from Trinity Lake. Flows have been reduced due to an oil leak
in one of the valves. The leak has been stopped.
Trinity Journal file

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The high spring flow to the Trinity River was cut back due to an oil leak
at the Trinity PowerPlant.

The power plant is at the base of Trinity Dam, upstream from Lewiston Dam.

The potential leak was reported Monday afternoon, and the federal Bureau of
Reclamation took immediate action to locate, stop and confine the leak,
said Christie Kalkowski, public affairs officer for the Bureau of
Reclamation, Mid-Pacific Regional Office.

On Tuesday, employees found the leak source that originated from one of the
two hydraulic valves (hollow jets) used during high flow releases. They
stopped the leak.

Flows were reduced to further assist in assessing the leak Tuesday
afternoon, as well as to address operational issues at the powerplant,
Kalkowski said.

Flows will be reduced to 3,500 cfs while Reclamation assesses the situation
and makes repairs. The powerplant is temporarily shut down today.

To ensure the oil doesn’t get to the fish hatchery at Lewiston Dam, crews
have installed numerous booms above the hatchery as a precautionary action.

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