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 Hall Tank 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 (Hall Tank) Interstice Test 10/1/2012 Plasteel (Hall Tank) Interstice Test - Updated Table 5 with additional tank sizes 3/24/2017 Highland Tank Interstice Test 5/2/2018 Modern Welding Interstice Test 1/2012 Modern Welding Interstice Test - Additional Approved Tank Sizes 12/2020 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 11/2014
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 Hall Tank 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 (Hall Tank) Interstice Test 10/1/2012 Plasteel (Hall Tank) Interstice Test - Updated Table 5 with additional tank sizes 3/24/2017 Highland Tank Interstice Test 5/2/2018 Modern Welding Interstice Test 1/2012 Modern Welding Interstice Test - Additional Approved Tank Sizes 12/2020 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 11/2014
