Minnesota Administrative Rules

7150.0410 PERMANENT CLOSURE AND CHANGE IN STATUS TO STORAGE OF NONREGULATED SUBSTANCES.

Subpart 1.

Requirements.

In addition to the requirements of the most current Minnesota Fire Code, owners and operators must comply with subparts 3 to 7 relating to permanent closure or change in status to storage of nonregulated substances.

Subp. 2.

[Repealed, 43 SR 1253]

Subp. 3.

Permanent closure.

A.

To permanently close a piping system, owners and operators must empty and clean the piping by removing all liquids. To permanently close a UST system, owners and operators must empty and clean the tank and piping by removing all liquids and accumulated sludges.

B.

All tanks and piping permanently closed must be:

(1)

removed from the ground; or

(2)

completely filled in with an inert solid material and free of voids that could allow flammable or hazardous vapors or liquids to accumulate in the voids.

C.

A site assessment must be conducted according to part 7150.0345, subpart 3, for all tanks and piping permanently closed.

D.

When a tank is retrofitted according to part 7150.0205, subpart 1, the original tank upon which the retrofitted tank is secured is considered permanently closed and a site assessment must be conducted according to part 7150.0345, subpart 3.

Subp. 4.

Storing nonregulated substances.

Continued use of a UST system to store a nonregulated substance is considered a change in status. Before a change in status to storage of a nonregulated substance, owners and operators must empty and clean the tank and piping by removing all liquid and accumulated sludge and conduct a site assessment according to part 7150.0345, subpart 3.

Subp. 5.

Certification of closure.

Owners and operators must ensure that persons performing permanent closures under subpart 3 or changes in status under subpart 4:

A.

are in compliance with certification requirements imposed by chapter 7105;

B.

furnish copies of current certificates issued by the commissioner to the owner and operator before beginning a permanent closure or a change in status; and

C.

certify on the notification form required under part 7150.0090, subpart 2, that the methods used to perform the permanent closure or change in status complied with this part.

Subp. 6.

[Repealed, 43 SR 1253]

Subp. 7.

Cleaning and closure procedures.

The cleaning and closure procedures listed in one of the following documents must be used to comply with this part. The documents are incorporated by reference under part 7150.0500:

A.

American Petroleum Institute, Closure of Underground Petroleum Storage Tanks, API RP 1604;

B.

American Petroleum Institute, Interior Lining and Periodic Inspection of Underground Storage Tanks, API STD 1631;

C.

American Petroleum Institute, Requirements for Safe Entry and Cleaning of Petroleum Storage Tanks, API STD 2015;

D.

American Petroleum Institute, Guidelines and Procedures for Entering and Cleaning Petroleum Storage Tanks, API RP 2016;

E.

National Fire Protection Association, Standard for the Safeguarding of Tanks and Containers for Entry, Cleaning, or Repair, NFPA 326; and

F.

National Institute for Occupational Safety and Health, Criteria for a Recommended Standard: Working in Confined Spaces, DHEW (NIOSH) Publication No. 80-106.

Statutory Authority:

MS s 116.49

History:

16 SR 59; 32 SR 1751; 34 SR 1610; 43 SR 1253

Published Electronically:

June 6, 2019