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Public Notice: Proposed Wastewater Permit for Darigold Inc. in Idaho

Publish Date: 08/28/2018


The EPA is proposing to reissue a National Pollutant Discharge Elimination System (NPDES) permit to Darigold Inc., in Caldwell, Idaho.

The draft permit places conditions on the discharge of pollutants from the wastewater treatment plant to waters of the United States. In order to ensure protection of water quality and human health, the permit places limits on the types and amounts of pollutants that can be discharged from the facility.

Darigold Inc. is a milk processing plant that receives and processes whole milk into non-fat dry milk and cream. Darigold processes 3.3 million pounds of milk per day.

Darigold discharges 380,000 gallons per day of evaporated condensate of whey (“COW” water) from its drying process and non-contact cooling water through the facility’s outfall. Darigold’s total discharge is 0.38 million gallons per day.

Tentative Determination

The Region 10 office of the EPA has tentatively determined to reissue a discharge permit to Darigold.

State Certification

This notice will serve as public notice of the intent of the state of Idaho, Department of Environmental Quality, to consider certifying that the subject discharges will comply with the applicable provisions of the Sections 208(e), 301, 302, 303, 306 and 307 of the Clean Water Act. The NPDES permit will not be issued until the certification requirements of Section 401 have been met.

Administrative Record

Electronic copies of the draft permit and technical fact sheet are available under "Related Documents" below.

The draft permit and other related documents may also be reviewed at the EPA Region 10 office in Seattle between 8:30am-4pm, Monday-Friday:

U.S. EPA Region 10
1200 Sixth Avenue, Suite 155
Seattle, Washington, 98101

Copies and other information may be requested by writing to the EPA at the above address to the attention of the NPDES Permits Unit, or by contacting Audrey Washington (, (206) 553‑0523.

Copies of the draft permit and fact sheet are also on file at the following locations:

EPA Idaho Operations Office
950 W. Bannock Street, Suite 900
Boise, ID 83702
Phone: 208-378-5746

Idaho Department of Environmental Quality
Boise Regional Office
1445 N. Orchard St.
Boise, Idaho 83706
Phone: 208-373-0550, toll-free 888-800-3480

Disability Reasonable Accomodation

If you need a reasonable accommodation for a disability, please call John Drabek at (206) 553-8257 (voice). TTY/TDD users please dial Washington Relay Service at 1-800-833-6388. Please provide one week advance notice for special requests not related to ongoing programs and services.

Applicant or Respondent

Darigold Inc.
520 Albany Street
Caldwell, ID 83606

Permit #: ID0024953

Related Documents

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