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Comment period

Darigold Inc. - Lynden

National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit

Oct. 1, 2025, 12 a.m. - Oct. 31, 2025, 11:59 p.m. PT

We invite your comments on draft NPDES permit no. WA0002470

Ecology invites your comments on the draft permit being reissued to Darigold Inc. - Lynden. The proposed permit authorizes the discharge of condensate of whey (COW) water and non-contact cooling water to the Nooksack River and clean-in-place water, plant cleaning water, and non-compliant COW water to the City of Lynden WWTP.

You may view the draft permit, fact sheet and related documents at Darigold Lynden Plant or visit the Water Quality Permitting and Reporting Information System (PARIS) website.

Background

We regulate wastewater released from municipalities and industries using the National Pollutant Discharge Elimination System (NPDES) Wastewater Discharge Permit. This permit regulates wastewater that goes directly into lakes, rivers, Puget Sound, or the ocean (surface water). All wastewater must be treated before it goes into surface water to protect human health and aquatic life. Learn more about water quality individual permits.

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Comment online

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Comment by mail

Tricia Miller, Permit Administrator
WA State Dept of Ecology - NWRO
PO Box 330316
Shoreline, WA 98133-9716
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Questions

Maia Hoffman
Permit Manager
Maia.hoffman@ecy.wa.gov
425-507-5681

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