Louisiana Administrative Code
Title 33 - ENVIRONMENTAL QUALITY
Part XI - Underground Storage Tanks
Chapter 5 - General Operating Requirements
Section XI-501 - Spill and Overfill Control

A. LAC 33:XI.599.Appendix A lists codes of practice developed by nationally-recognized associations or independent testing laboratories that shall be used to comply with these regulations.

B. Owners and operators shall ensure that releases due to spilling or overfilling do not occur. Before a transfer is made, the owner and operator shall ensure that the volume available in the tank is greater than the volume of product to be transferred to the tank and that the transfer operation is monitored constantly to prevent overfilling and spilling. Spill and overfill controls shall be conducted in accordance with Subsection A of this Section.

C. Owners and operators shall report, investigate, and clean up any spills and overfills, in accordance with LAC 33:XI.713.

D. Overfill prevention devices must be inspected by removal in accordance with LAC 33:XI.511.A.3 and 511.A.1.b.ii within seven days of any tank overfill event.

E. Tank overfills (when tank is more than 90 or 95 percent full depending on the type of overfill equipment installed) must not occur as a result of tank or piping manifolds. Manifolded UST systems that cause overfills must be immediately taken out of service and repaired, replaced, permanently closed, or placed in temporary closure following the procedures outlined in LAC 33:XI.711.A.1.b.