PURPOSE: This rule describes the requirements for off-site investigations following reported or suspected releases.

1. (1) When required by the department, owners and operators of underground storage tank
2. (UST) systems must follow the steps for confirmation of a release in 10 CSR 26-2.052 to 10 CSR 26-2

determine if the UST system is the source of the off-site impacts. These impacts include the discovery of regulated substances such as the presence of free product or vapors in soils, basements, sewer and utility lines, and nearby surface and drinking waters that have been observed by the department or brought to its attention by another party.

AUTHORITY: section 319.107, RSMo 2000, and sections 319.109 and 319.137, RSMo Supp. 2010.* This rule originally filed as 10 CSR 20-10.051. Original rule filed April 2, 1990, effective Sept. 28, 1990. Moved and amended: Filed April 15, 2011, effective Dec. 30, 2011. *Original authority: 319.107, RSMo 1989, amended 1994; 319.109, RSMo 1989, amended 1995, 2004, 2008; and 319.137, RSMo 1989, amended 1993, 1995, 2004.