Compatibility

1. Owners and operators must use an underground storage tank system made of or lined with materials that are compatible with the substance stored in the underground storage tank system. 2. Owners and operators must notify the department at least thirty days prior to switching to a regulated substance containing greater than ten percent ethanol, greater than twenty percent biodiesel, or any other regulated substance identified by the department. In addition, owners and operators with underground storage tank systems storing these regulated substances must meet one of the following: a. Demonstrate compatibility of the underground storage tank system, including the tank, piping, containment sumps, pumping equipment, release detection equipment, spill equipment, and overfill equipment. Owners and operators may demonstrate compatibility of the underground storage tank system by using one of the following options: (1) Certification or listing of underground storage tank system equipment or components by a nationally recognized, independent testing laboratory for use with the regulated substance stored; or (2) Equipment or component manufacturer approval. The manufacturer's approval must be in writing, indicate an affirmative statement of compatibility, specify the range of biofuel blends the equipment or component is compatible with, and be from the equipment or component manufacturer; or b. Use another option determined by the department to be no less protective of human health and the environment than the options listed in subdivision a. 3. Owners and operators must maintain records in accordance with subsection 2 of section 33.1-24-08-24 documenting compliance with subsection 2 for as long as the underground storage tank system is used to store the regulated substance. NOTE: The following code of practice may be useful in complying with this section: American Petroleum Institute Recommended Practice 1626, "Storing and Handling Ethanol and Gasoline-Ethanol Blends at Distribution Terminals and Filling Stations".