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How a Compliance Inspection Works

Inspections are normally conducted on a 12 month basis. The inspector will call the tank owner 7 to 10 days prior to schedule the inspection.

One part of the inspection process will be a records review. Note: UST systems that store fuel solely for use by emergency power generators installed on or before May 23, 2008 must conduct release detection by May 26, 2020. The following is a list of the minimum records that will be needed for the review (dependent upon equipment in place, methods in use, and manufacturer specifications):

Note: All testing and equipment checks are required to be documented on a DHEC form, a DHEC-approved form or in a format approved by DHEC.
If you wish to use your own form please submit it to DHEC for prior approval. Underground Storage Tank (UST) forms can be found at

Even though the Division does not directly regulate them, inspectors will gather information about the following items:

Once the information gathering is complete, the inspector will issue one of the following:

If an In-Compliance Letter is issued, it means that everything is in compliance with the regulations and no follow-up is needed.

If a Notice of Alleged Violation (NOAV) is issued, it means that follow-up in some form may be required. The NOAV will instruct the tank owner on what must be done to return to  compliance again. It will also give a 30 day due date. Once the due date has passed, if the facility still remains out of compliance, the Division will begin the delivery prohibition process.

Another requirement to gain compliance after a NOAV is issued, is for the A/B operator to complete retraining. This is required per the Operator Training requirements (Part 280.240). If the Class A/B operator is present at the time of the inspection, the inspector may perform retraining at that time. Otherwise, the NOAV will instruct the tank owner to have the A/B operator contact the Division prior to the due date to complete retraining.

Guidance Documents: