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Darigold seeks to discharge more waste into Port's treatment facility

Port of Sunnyside commissioners decided to table a decision to approve the increase in wastewater discharge from Darigold in Sunnyside at a meeting held last night (Monday).

Port of Sunnyside Director Amber Hansen said the proposed increase would be from 30 million cubic feet of wastewater to just over 31 million cubic feet annually.

She said commissioners wanted more answers before approving the request. Hansen said the commissioners want to know the long-term effects and the pros and cons.

Hansen said one thing the Port needs to look at is the time frame for the extra discharge, from November to February. During this time the storage at the Port is limited.

The proposed storage volume is approximately 95 percent of the total that Darigold recently requested. Although less, Port engineer Bob Ferrell believes the proposed volume would be adequate for Darigold's current level of operation.

If approved the total hydraulic volume amounts to an annual daily average of slightly more than 1.21 million gallons per day, or about 84 percent of design capacity.

The Port's permit with the Department of Ecology requires a plan to be submitted if 95 percent of the design capacity is reached. But based on a statistical analysis it is unlikely the Port will receive the total contracted hydraulic volume.

Although the modification is being recommended to commissioners, a decision probably won't be reached until the April 19 meeting.

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