Hawaii DOH Underground Storage Tank (UST) section



As required by the Hawaii Administrative Rules 11-280.1, Section 11-280.1-71, owner or operator must notify the DOH of their intent to permanently close (either remove or close in place) or to complete a change-in-service at least thirty (30) days before the planned permanent closure or change-in-service and at least seven (7) days before the scheduled permanent closure or change-in-service.

To meet these aforementioned notification requirements, owners and/or operators may use the following DOH recommended forms:

Notice of Intent to Close Underground Storage Tanks – Part I: 30-Day Notification (05/2021)
Notice of Intent to Close Underground Storage Tanks – (Part II: 7-Day Notification (05/2021)

UPDATE: DOH have developed the following recommended forms for Operator Class A, B and C List/Designation and two versions of the Walkthrough Checklist. The other two documents, regarding financial responsibility and compliance dates are FYI.

List of Designated Class A/B/C Operators (rev 5/2019) – This form is not required but recommended to let the department know of Class A/B/C operator information.

DOH Sample Walkthrough inspection check-off lists -These forms are not required but recommended to document the requirement to conduct walkthrough inspections. There are two sample forms provided below. One is owners/operators of a single tank system and the other is for owners/operators of multi-tank systems.

Walkthrough Checklist for Single – Tank system
Walkthrough Checklist for Multi – Tank system

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.

UST Release Response guidance

   Red Hill Bulk Fuel Storage Facility

UST Rules

Chapter 11-280.1, HAR, effective January 17, 2020 – NEW
Note: The only change from the July 15, 2018 version of the rules to this current version is in section 11-280.1-327. Click here to print the page containing the affected section only.

HAR rulemaking public notice and process documentation – Last  updated 2/18/2020

Act 179 Relating to Underground Storage Tanks

Important information for owners and operators of field-constructed tanks (FCTs) and airport hydrant systems (AHS): You are required have a permit for your facility by  July 15, 2019. You must submit your permit application by January 15, 2019 to ensure sufficient time for departmental review and approval.

Operator Training

List of Designated Class A/B/C Operators (rev 5/2019) and List of approved UST training providers (rev 1/2021) – There has been an additional vendor added to the approved operator training vendors list. The department is also working on supplemental guidance documents. Eventually these documents will be made available on our website. Important information regarding approved operator training programs:
  • Departmental approval does not equate to DOH recommendation/endorsement. Approved programs address the minimum topics required under HAR §11-280.1-242 Requirements for operator training. The quality of training programs programs may vary.
  • 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.

March 1, 2021 Energy Policy Act – Summary Information of USTs

Environmental Health Warehouse database and Map Viewer: Leaking Underground Storage Tanks HI

UST Data Files on regulated USTs and release sites in Hawaii – June. 2021

EPA Hawaii Land Revitalization (Brownfields)

Field citations list 03/08/2019

Release Response guidance

Please follow the applicable guidance in the DOH HEER TGM, DOH HEER EAL guidance, and other guidance documents on the DOH HEER website applicable to UST release response including Multi-Increment (MI) soil sampling, monitoring well installation, Low Flow groundwater sampling, soil vapor (SV) sampling, use of appropriate EALs, and preparation of the Environmental Hazard Evaluation (EHE), and Environmental Hazard Management Plan (EHMP) for UST release response.


Five decision units (DUs) are requested for multi-increment soil sampling of UST excavations for USTs 6,000 gallons or larger. For USTs less than 6,000 gallons, the four walls and floor may be combined into one DU and MIS soil sample to be sent to the lab. Additional DUs are requested for pipe runs and beneath fuel dispensers. For piping runs less than 90 feet, one DU is recommended with additional DUs for additional lengths of 90 feet or less. Dispensers should have their own DUs.

On neighbor islands, consultants may use alternative methods described in Section 5.6 of the HEER TGM to avoid the use of methanol for analyses of volatile organic compounds (VOCs) in soil samples. These include: freezing of samples in collectors and extraction into methanol at the laboratory, or soil vapor (SV) site assessment.

Soil vapor (SV) site assessments differ from sub-slab intrusion investigations as the purpose is to detect a release of any quantity vs. the potential for SV intrusion thru the foundation slab of a building. For SV site assessment of in-place USTs, please locate an area at the edge of the concrete or other cap over the USTs. Following the general guidance of a sub-slab SV intrusion investigation (HEER TGM Section 7 hawaiidoh.org/), advance the SV probe into the pea gravel surrounding the USTs. Two SV samples (and one QA) sample collected from different locations in the pea gravel of in-place USTs should be able to determine if a confirmed UST release has taken place.

For piping, the SV probe should also be advanced into the pea gravel or directly adjacent at the estimated depth of bottom of piping. For both methods, the UST or piping cannot be uncovered or visible at time of SV site assessment. If removing USTs or piping, then multi-increment (MI) soil sampling should be performed. If native soil is not present, contact DOH-UST Release Response at 808-586-4226.

See Table 9-5 in DOH HEER TGM for required petroleum constituent analyses by fuel type. Unknown USTs need TPH-g, TPH-d, TPH-o and sub-analytes on Table 9-5.*

Formats for the UST Initial Release Response report and Quarterly Release Response reports may follow the format of Site Investigation reports in DOH HEER TGM 18.5.9.

* For all groundwater sampling at gasoline and diesel UST releases following a confirmed UST release – DOH UST and DOH HEER request that TPH-d be added to TPH-g and gasoline sub-analytes in HEER TGM Table 9-5 for all groundwater analyses of gasoline UST releases, and that TPH-g be added to TPH-d and middle distillate sub-analytes for all groundwater analyses of middle distillate (diesel, jet fuel) UST release sitesThis is for groundwater analyses only. The purpose is to monitor changes in petroleum hydrocarbon chain length as a result of bio-degradation and physical degradation in the sub-surface. [Dec 18, 2018]

If you have any questions or comments, please contact DOH UST Release Response Section at 808-586-4226 or email.


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.

Request for Public Record form – Facility files and documentation for regulated USTs in Hawaii and release sites.

Notification for Underground Storage Tanks Form (Form 1 rev. 2/2019) – Complete this form to notify DOH of changes to the UST or UST system.

Application for an Underground Storage Tank Permit (Form 2 rev. 2/2019) – Required by DOH for installation and/or operation; modification of UST system.

Certification of Underground Storage Tank Installation (Form 3 rev. 2/2019) – Required within 30 days following installation of a UST or tank system.

Application for Renewal of an Underground Storage Tank Permit (Form 4 rev. 2/2019) – 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. 2/2019) – Application for transfer of UST owner/operator shall be received by DOH at least 30 days prior to date of the transfer.

UST Intent to Close form – Required at least 30 days prior to closing or removing a UST.

Confirmed Release Notification form – Required by DOH within 7 days of reporting a confirmed UST release.

** Notice of Intent to Close Underground Storage Tanks – Part I: 30-Day Notification (05/2021) – To meet this requirement, you may use this recommended form for planned permanent closure or change-in-service as per HAR 11.280.1-71(a).

** Notice of Intent to Close Underground Storage Tanks – Part II: 7-Day Notification (05/2021) – To meet this requirement, you may use this recommended form for scheduled permanent closure or change-in-service as per HAR -11-280.1 – 71(b).