Minn. R. agency 167, ch. 7151, WITHDRAWAL FROM SERVICE OF ABOVEGROUND STORAGE TANK SYSTEMS, pt. 7151.8400

Current through Register Vol. 49, No. 25, December 16, 2024

Part 7151.8400 - CONTAMINATION DETERMINATION

Subpart 1.Application.

Except as otherwise provided in subpart 2, owners and operators shall sample for contamination when removing a tank and determine, through laboratory analysis, the extent of contamination. In selecting sample types, sample locations, and measurement methods, owners and operators shall consider:

A. the method of closure;

B. the nature of the stored substance;

C. the type of secondary containment;

D. the depth to groundwater;

E. areas having the greatest potential for contamination; and

F. other factors necessary for identifying the presence of a release.

Subp. 2.Exclusions.

The following aboveground storage tank systems are excluded from the requirements of this part:

A. a tank storing other regulated substances;

B. a tank, which has been removed, that exclusively contained number 6 grade fuel oil or asphalt cement; and

C. a tank with containment under the tank floor meeting part 7151.5400, subpart 3, item C, D, E, G, H, or I where:

(1) there is no evidence of a release through visual evidence, odor, operating history; and

(2) there is no compromise of the integrity of the containment.

Minn. R. agency 167, ch. 7151, WITHDRAWAL FROM SERVICE OF ABOVEGROUND STORAGE TANK SYSTEMS, pt. 7151.8400

23 SR 883; 25 SR 556

Statutory Authority: MS s 115.03