Additional UST Installation Information
Dry Tank Interstice Monitoring Approvals
Pursuant to various tank manufacturers’ requests, The North Carolina Department of Environmental Quality (NCDEQ) – Underground Storage Tank (UST) Section has reviewed the following proposed double-walled tank interstitial monitoring installation and testing documentation for compliance with the electronic liquid detecting (dry) sensor requirements in 15A NCAC 02N .0901 and .0903.
| File Name | Approved | |
|---|---|---|
| General Industries Dry Tank Approval | 12/8/2011 | |
| Plasteel Dry Tank Approval | 1/23/2013 | |
| Highland Tank Dry Tank Approval (Veeder Root #794380-323 sensor) | 1/28/2011 | |
| Highland Tank Dry Tank Approval Revised (Veeder Root #794380-333 sensor) | 5/27/2014 | |
| Modern Welding Dry Tank Approval | 1/13/2012 | |
| Service Welding Dry Tank Approval | 1/15/2014 |
Tank Interstice Testing Protocols
The following third-party certified tank testing protocols are referenced in the NC DEQ Dry Tank Interstice Monitoring Approvals listed in the above table.
| File Name | Revised | |
|---|---|---|
| Plasteel Interstice Test | 6/12/2023 | |
| Highland Tank Interstice Test | 3/21/2023 | |
| Modern Welding Interstice Test | 1/2012 | |
| Modern Welding Interstice Test - Additional Approved Tank Sizes | 4/4/2024 | |
| Permatank Interstice Test - 2 inch diameter tank interstice riser only | 11/22/2013 | |
| Permatank Interstice Test - 3 inch or unknown diameter tank interstice riser only | 10/8/2020 |
Tank Interstice Position Sensitive Sensor Installation
The following position sensitive sensor installation procedures are approved for use with tanks referenced in the NC DEQ Dry Tank Interstice Monitoring Approvals listed in the above table.
| File Name | Revised | |
|---|---|---|
| Incon TSP-DMS Sensor Installation | 4/2011 | |
| Veeder-Root 794380-323 Sensor Installation | 1/2013 | |
| Veeder-Root 794380-333 Sensor Testing Guidance | 1/5/2023 |
This page was last modified on 04/04/2024