Public Notices and Updates

Public Notice NPDES Permits, Section 401 WQCs, and Supporting Documents

Pursuant to HAR 11-55-09 and HAR 11-54-9.1.03, the Department of Health notifies all interested persons of a proposed NPDES permit or Section 401 WQC. All current public notice NPDES permits, Section 401 WQCs, and supporting documents are available at:

NPDES permits and/or Section WQC public notices.


Active Public Notices and Upcoming Public Hearings

See below for a list of active public notices and scheduled upcoming public hearings.

Active public notices are those public notices that are still in their public comment period (i.e., the CWB is still accepting public comments on the public noticed documents). Upcoming public hearings are those public hearings that have been scheduled but have not yet been held.

Click on the applicable post for more information related to that public notice or public hearing, including instructions on how to participate in the public participation process.

Supporting documents for active public notices can be accessed here.

If there are no posts other than the informational post listed here, then there are no active public notices or upcoming scheduled public hearings.

NOTICE OF PUBLIC COMMENT PERIOD FOR THE DRAFT REPORT TITLED “2024 STATE OF HAWAII WATER QUALITY MONITORING AND ASSESSMENT REPORT”

Under §303(d) of the Federal Clean Water Act, the Hawaii Department of Health (HIDOH) Clean Water Branch (CWB) is scheduling a public comment period from the date of this notice until 4:30 P.M. on April 5, 2024, to solicit input from the public and other stakeholders about the 2024 State of Hawaii Water Quality Monitoring […]

Active Public Notices and Upcoming Public Hearings Information

The Department of Health, Clean Water Branch (CWB) will post information regarding active public notices and upcoming scheduled public hearings on our website on the Active Public Notices and Upcoming Public Hearings Page as well as an updated list on our Home page. Active public notices are those public notices that are still in their […]


NPDES Permit No. HI S000431 Public Notices and Documents for the Thirty Meter Telescope (TMT) International Observatory Project

Renewal Permit Documents
Public Hearing Notice – TMT International Observatory – HI S000431
Public Notice, Draft Renewal Permit and Rationale – TMT International Observatory – HI S000431
Renewal Application – TMT International Observatory – HI S000431
Response to Public Hearing Comments – TMT International Observatory – HIS000431

Original Permit Documents
NPDES Permit – TMT International Observatory – HI S000431
Original 2014 Application – TMT International Observatory – HI S000431

June 25, 2019 Public Hearing
Video of Public Hearing for TMT International Observatory NPDES Permit Renewal HI S000431

TMT Response to June 25, 2019 Public Hearing Comments
The Department of Health’s response to the June 25, 2019 public hearing comments on the National Pollutant Discharge Elimination System (NPDES) permit renewal for the Thirty Meter Telescope International Observatory is available at: Response to Public Hearing Comments – TMT International Observatory – HIS000431.

TMT Request for Contested Case Hearing
Any interested party who submitted comments during the public notice period or submitted testimony during the public hearing may request a contested case hearing. Requests may be mailed to the Director of Health, 1250 Punchbowl Street, Honolulu, Hawaii 96813. The requirements for requesting a contested case are found in Hawaii Administrative Rules, Chapter 11-1. A copy of these rules is available at https://health.hawaii.gov/opppd/files/2015/06/11-1.pdf. Requests must include the requester’s first and last name, mailing address, email, and phone number. The Director of Health will accept requests for a contested case hearing no later than August 9, 2019, by the close of business at 4:30 p.m.

April 8, 2021 Re-Public Notice
On April 8, 2021, the Department of Health Clean Water Branch (CWB) published in the Hawaii Tribune-Herald its tentative recommendation to renew a Water Pollution Control Permit for the Thirty Meter Telescope (TMT) International Observatory, National Pollutant Discharge Elimination System (NPDES) Permit No. HI S000431.

The previously public-noticed documents were worded in a way that may imply that the Director of Health has made certain determinations with respect to the permit application and were, therefore, rescinded. The current public notice will incorporate all previously submitted public comments (May 23, 2019, public notice and June 25, 2019 public hearing) into this new public comment record. The CWB is extending the public comment period an additional 30-days, which is now scheduled to end June 7, 2021.

Written comments can be emailed to [email protected] or mailed to our office at 2827 Waimano Home Road, #225, Pearl City, Hawaii 96782. All mailed comments must be post marked no later than June 7, 2021. The new permit recommendation and fact sheet can be viewed below.

April 8, 2021 Re-Public Notice Documents
April 8, 2021 TMT Public Notice Documents (Public Notice, Public Notice Permit, and Permit Rationale)