S.D. Admin. R. 74:56:03:22

Current through Register Vol. 51, page 71, January 6, 2025

Section 74:56:03:22 - Release investigation and confirmation

Release investigation and confirmation requirements are as follows:

(1) After consultation with the department, all suspected releases must be immediately investigated by the owners or operators using one or more of the following procedures:

(a) Initiation of a site investigation of the suspected release incident to determine the total extent of release;

(b) In case of an AST system with secondary containment, an investigation of a possible release into the area between the AST system and the secondary containment;

(c) Internal tank inspection;

(d) Investigation in the following manner of releases detected by a failed tank or piping test:

(i) A check of inventory records to detect a discrepancy that indicates a release may have occurred;

(ii)Isolation from the tank and retesting of the piping within seven days after the initial testing;

(iii) Isolation from the piping and retesting of the tank within seven days after the initial testing; and

(iv) Laboratory analysis of soil samples for regulated substance contamination in the area of the suspected release;

(e) In the case of a discrepancy during inventory reconciliation or any other suspected release, an investigation shall be conducted in the following manner:

(i) A test of the AST systems and piping that is conducted within seven days after the initial reporting to the state to determine if a release may have occurred; and

(ii)Laboratory analysis of soil samples for regulated substance contamination in the area of the suspected release;

(f) Other investigative procedures with prior approval of the department;

(2) When a release of a regulated substance is suspected, the state may require the owners or operators to test the AST systems and piping for tightness or structural soundness or require a site investigation to ascertain the location, magnitude, and effect of the releases.

S.D. Admin. R. 74:56:03:22

14 SDR 76, effective 11/29/1987; 18 SDR 62, effective 10/10/1991; transferred from

General Authority: SDCL 34A-2-93, 34A-2-101.

Law Implemented: SDCL 34A-2-100, 34A-2-101.