Minnesota Administrative Rules

7150.0420 SITE ASSESSMENT.

When permanently closing a tank or making a change in status to storage of a nonregulated substance, owners and operators must measure through laboratory analysis for the presence of a release where contamination is most likely to be present at the underground storage tank site. If contaminated soils, contaminated groundwater, or free product as a liquid or vapor is discovered by this measurement or by any other manner, owners and operators must notify the agency immediately and begin corrective action according to Minnesota Statutes, section 115.061. In selecting sample types, sample locations, and measurement methods, owners and operators must consider the method of closure, the nature of the stored substance, the type of backfill, the depth to groundwater, and other factors appropriate for identifying the presence of a release.

Statutory Authority:

MS s 116.49

History:

16 SR 59; 32 SR 1751; 34 SR 1610

Published Electronically:

May 26, 2010