Minnesota Administrative Rules

7151.8200 OUT-OF-SERVICE ABOVEGROUND STORAGE TANK SYSTEMS.

Subpart 1.

Application.

If a substance is not introduced to or removed from an aboveground storage tank system for one year or more, or if an aboveground storage tank system is to be permanently closed, the owner or operator shall:

A.

maintain the operation and maintenance requirements of parts 7151.7100 to 7151.7500; or

B.

declare the tank system as inactive and taken out of service or removed.

Subp. 2.

Out of service.

The owner or operator of an aboveground storage tank system taken out of service shall:

A.

remove all substances from the aboveground storage tank, connected piping, and appurtenances;

B.

secure the aboveground storage tank to prevent unauthorized entrance or tampering, by:

(1)

securely bolting and locking all manways and valves; and

(2)

capping or plugging fill lines, gauge openings, or pump lines;

C.

thoroughly clean the interior of the tank and all associated piping of all sludge, solids, and residuals;

D.

dispose of tank bottom sludges in accordance with applicable state or federal requirements;

E.

render the tank sufficiently free of vapors to avoid formation of an explosive atmosphere and vent the tank; and

F.

clearly label the exterior of an out-of-service tank with the words "Out of Service," and the date the tank was taken out of service.

Statutory Authority:

MS s 115.03

History:

23 SR 883; 25 SR 556

Published Electronically:

October 2, 2007