Underground Storage Tank (UST) Compliance
UPDATES
July 15, 2028 Regulatory Deadline – REGULATED USTs and PIPING, SECONDARY CONTAINMENT
Email (August 5, 2025)
August 5, 2025
Aloha Underground Storage Tank Owners and Operators
The Hawaiʻi Administrative Rules (HAR), Chapter 11-280.1, mandate that all single-walled tanks and piping must have secondary containment. Additionally, all underground storage tank (UST) systems are required to implement interstitial monitoring for release detection. These measures aim to prevent releases and protect Hawaiʻi’s land and water from contamination. UST owners and operators must comply with these requirements by July 15, 2028.
WHY THIS NOTICE NOW?
Although three (3) years may seem like ample time to replace or modify your UST or tank system(s) and implement interstitial monitoring, the process involves many steps that require careful planning. Several factors could potentially delay installation, including:
🚨NO EXTENSIONS WILL BE GRANTED🚨
Supply chain limitations – Will materials and equipment be readily available?
Permit surge – A high volume of last-minute permit requests could slow approvals.
Contract availability – Finding and scheduling a contractor may be challenging.
To avoid delays and ensure compliance, we strongly encourage you to begin planning now.
JULY 2028 is approaching quickly. DO NOT WAIT!
Check our website and the links provided below for additional information:
- This page – Underground Storage Tank (UST) Compliance
If you have any questions, please contact the UST Program at the Hawaiʻi Department of Health by calling (808) 586-4226.
We are here to help.
January 1, 2045 Regulatory Deadline – PERMITS NEAR SHORELINE PROHIBITED
The department shall not issue a permit for a new underground storage tank within 100 yards of the shoreline. Beginning January 1, 2045, no person shall operate an underground storage tank within 100 yards of the shoreline and no permit shall be renewed. (refer to Hawaii Revised Statutes 342L-4.5)
OPERATOR TRAINING & FORMS
List of Designated Class A/B/C Operators form (updated Feb 2025)
This form is not required but recommended to let the department know of Class A/B/C operator information. Class A/B information (designation form and certificates) should be submitted to DOH. Class C list needs to be updated onsite. Class A/B and C information should be onsite during UST compliance inspections.
Listing of Approved UST Training Providers (rev 3/3/25)
This form is not required Department approval does not equate to DOH recommendation/endorsement. Approved programs address the minimum topics required under under HAR §11-280.1-242 Requirements for operator training. The quality of training programs may vary.
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- Approved training programs may not address Hawaii-specific regulatory requirements with much detail because there is no specific requirement to do so, or may not address the specific requirements of your facility. It is your responsibility to be in compliance with all applicable UST regulations. Please contact DOH UST Section at 586-4226 if you have any questions on the training requirements for your facility.
- Please check the list of training providers to ensure that your chosen vendor has received the required approvals.
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INTENT TO CLOSE FORMS
Notice of Intent Part I 30-Day Notification – Submit this form to the DOH at least 30 days prior to the date of planned permanent UST closure and/or change-in-service.
Notice of Intent Part II 7-Day Notification – Submit this form to the DOH at least 7 days prior to the date of scheduled permanent UST closure and/or change-in-service.
WALK THROUGH INSPECTION INFORMATION & FORMS
Walkthrough Checklist for Single – Tank system – Recommended checklist to conduct the monthly walkthrough for facility with one tank system.
Walkthrough Checklist for Multi – Tank system – Recommended checklist to conduct the monthly walkthrough for facility with more than one tank system.
NOTIFICATIONS & PERMIT FORMS
Notification for Underground Storage Tanks Form (Form 1 rev. 10/3/22) – Complete this form to notify DOH of changes to the UST or UST system.
Application for an Underground Storage Tank Permit (Form 2 rev.10/3/22) – Required by DOH for installation and/or operation; modification of UST system.
Certification of Underground Storage Tank Installation (Form 3 rev. 10/3/22) – Required within 30 days following installation of a UST or tank system.
Application for Renewal of an Underground Storage Tank Permit (Form 4 rev. 10/3/22) – Renewal application shall be received by DOH at least 180 days prior to expiration of existing permit.
Application for Transfer of an Underground Storage Tank Permit (Form 5 rev. 10/3/22) – Application for transfer of UST owner/operator shall be received by DOH at least 30 days prior to date of the transfer.
OTHER GUIDANCE INFORMATION & FORMS
Confirmed Release Notification form – Required by DOH within 7 days of reporting a confirmed UST release.
Energy Policy – Public Record 2025
July 15, 2028 – USTs and piping upgraded to secondary containment
Summary of Compliance Dates (rev 5/19) – This document has been revised on May 14, 2019. The tables summarize dates by which owners and operators of underground storage tanks (UST) systems would need to comply with new requirements pursuant to Hawaii Administrative Rule §11-280.1. This list is not exhaustive of all of the changes to the regulations
EPA Memo on Financial Assurance – This memo encourages owners and operators to scrutinize their insurance policies, used to comply with financial responsibility (FR), to ensure that it contains only acceptable exclusions.
March 3, 2023 Energy Policy Act – Summary Information on USTs
UST Data Files – Regulated USTs and release sites in Hawaii (2025 08 20 )
EPA Hawaii Land Revitalization (Brownfields)
Field Citations List 8/18/2022
Request for Public Record form – Facility files and documentation for regulated USTs in Hawaii and release sites.