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Draft NPDES Permit for Commonwealth Oil Refining Company, Inc. in Peñuelas, Puerto Rico

Below are EPA's National Pollutant Discharge Elimination System (NPDES) draft permit and supporting documents for the Commonwealth Oil Refining Company, Inc. in Peñuelas, Puerto Rico.

Permit number: PR0000345
Public Notice date: 10/7/2026
Public Notice Comment Period Date: 11/6/2026
Permit Effective Date: TBD
Permit expiration Date: TBD

PR0000345 CORCO NPDES Draft Permit (pdf) (455.96 KB)
PR0000345 CORCO DRAFT NPDES Fact Sheet (pdf) (4.33 MB)
Commonwealth Oil Refining Company, Inc. (CORCO) Final Permit, July 2019 (pdf) (856.89 KB)
PR Public Notice CORCO OCT-2026 (pdf) (95.17 KB)