Liberte Environmental Associates

NPDES Permits Potentially Affecting Water Quality


Final NPDES Wastewater Permits - Issued by Oregon Department of Environmental Quality

This list consists of permit documents* (see end) made available by Oregon DEQ and is not all inclusive. All documents are PDF except where indicated.

Cannon Beach Sewage Treatment Plant (STP): Final NPDES Wastewater Permit Related Documents

Cannon Beach STP - Final Permit (2011)

Cannon Beach STP - Final Fact Sheet (2011)

Permitted Mixing Zone Size for Toxicity:
Waterbody: Discharge to wetlands that connect to Ecola Creek at about River Mile (RM) 1.0 (changed in 2011 from RM 0.7). Discharge located in tidal estuary affected by the Pacific Ocean.
Acute Mixing Zone: None provided, compliance point is at effluent end-of-pipe.
Chronic Mixing Zone: None provided, compliance point is at effluent end-of-pipe.


Cannon Beach STP, Oregon: Draft NPDES Wastewater Permit Related Documents.
The DEQ comment period for this proposed NPDES Wastewater Permit Renewal ended on October 25, 2011.

Cannon Beach Sewage Treatment Plant Public Notice
Cannon Beach Sewage Treatment Plant Draft NPDES Permit
Cannon Beach Sewage Treatment Plant Draft Fact Sheet

The previous Cannon Beach STP permit expired on August 31, 2011.
Cannon Beach STP - Previous 2006 Permit*
Cannon Beach STP - Previous 2006 Fact Sheet

*LEA Disclaimer for compiled, unlocked and OCR documents: From time to time LEA will post on this website scanned documents, and additional documents otherwise limited in accessibility. Accordingly, LEA may use document unlocking and optical character recognition (OCR) capabilities to provide accessible, tagged text documents for use by people with visual impairments, and also provide searchable documents. The unlocking and OCR processes are not faultless, and hence LEA cannot guarantee document perfection. However, taking these caveats into account, document accessibility is greatly increased. LEA also posts the original document where necessary, as obtained by LEA, such that users may compare any potential imperfections in the unlocked and OCR documents.