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UST Permanent Closure

Prior to closure of a regulated UST system, you must submit a UST-3 form, Notice of Intent for Permanent Closure. This notice must be submitted 30 days prior to closure activities. If a licensed geologist or professional engineer will be supervising the closure activities, then the UST-3 can be submitted five days prior to closure. Regulated UST systems must be closed following the procedures detailed in the UST Sections Guidelines for Site Checks, Tank Closure and Initial Response and Abatement. During closure, samples must be taken around the UST system in accordance with the closure guidelines and sampling guidelines. If contamination is discovered during closure activities then a UST-61, 24 Hour Release and UST Leak Reporting Form, must be submitted. Following closure, a closure report must be submitted to the Regional Office for the county where the facility is located following the format listed in the UST-12 form, Closure Report Format. Below are links to the forms and guidelines for conducting permanent closure of regulated UST systems.

UST-3, Notice of Intent: UST Permanent Closure or Change-In-Service
UST-2A, Site Investigation Report for Permanent Closure or Change-In-Service - REGISTERED TANKS
UST-2B, Site Investigation Report for Permanent Closure or Change-In-Service - UNREGISTERED TANKS
Guidelines for Site Checks, Tank Closure and Initial Response
UST-12, Closure Report Format
UST-61, 24-Hour Release and UST Leak Reporting Form
Guidelines for Sampling