Section 93.575. Tank-system integrity assessment.

 

(1)   General. The owner or operator shall assess all suspected or obvious releases in accordance with sub. (2) within 7 business days of discovery of any of the conditions described in s. ATCP 93.570 , unless any of the following conditions occur:

(a) System equipment or the monitoring device is found to be defective and is immediately repaired, re-calibrated or replaced, and additional monitoring does not confirm the initial result.

(b) Inventory control is the method of leak detection, as allowed by s. ATCP 93.510 (3) (d) , and the data is re-evaluated using an additional 7 days of data, and the re-evaluation does not show a loss.

(2)   Assessment. The owner or operator shall evaluate and confirm all suspected or obvious releases by taking one or all of the following actions and shall also do so in accordance with any corresponding directive of the department:

(a) Tank-system integrity assessment . The owner or operator shall have a precision tightness test conducted in accordance with s. ATCP 93.515 (4) to determine whether a leak exists.

(b) Tank-system site assessment . The owner or operator shall have the site assessed for the presence of a release in accordance with s. ATCP 93.580 .

CR 07-029 : cr. Register November 2008 No. 635 , eff. 2-1-09; CR 09-017 : am. (2) (intro.) Register July 2009 No. 643 , eff. 8-1-09; correction in (1) (intro.), (b), (2) (a), (b) made under s. 13.92 (4) (b) 7. , Stats., Register December 2011 No. 672 ; correction in (1) (intro.), (b), (2) (a), (b) made under s. 13.92 (4) (b) 7. , Stats., Register October 2013 No. 694 .