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401 Water Quality Certification

Public Notice

DEM’s Office of Water Resources issues a Final Decision and a Response to Comments regarding the application of National Grid LNG, LLC requesting a State of Rhode Island Water Quality Certification related to the Water Quality Certification Application File Number 16-171; RIR101477

The Office of Water Resources has reviewed the Applicants July 2018 and October 2018 responses to comments and has determined the Application is complete and the responses adequately address the relevant Public comments and the technical comments issued by the RI DEM Office of Water Resources.

Learn more on the Site Remediation webpage.

This program is responsible for ensuring compliance with the State Water Quality Regulations for projects that impact inland & coastal waters by fulfilling the requirements of Section 401 of the Clean Water Act. The Act requires the State to certify all Projects that involve dredge, fill, or flow alterations as well as some coastal projects that include site disturbances. Ultimately, 401 has authority over any activity that has the reasonable potential to discharge polltants into waters of the State. These activities are administered under other programs within the Office of Water Resources, like Wastewater Treatment Discharges under RIPDES, Underground Injection, and Stormwater.

Activities Regulated under the Water Quality Certification Program

Dredging incoporates many different regulatory agencies. The Office of Water evaluates dredge activities for the following:

  • water quality impacts from dredging (the possibility of creating anoxic zones)
  • water quality impacts from scow overflow and turbidity increases
  • the need for shellfish transplants when a dense population is dredged
  • work windows to protect anadromous and resident fisheries
  • disposal locations that may endanger public or private drinking water wells


Harbor Management Plans

For more information contact: Neal Personeus