Louisiana Administrative Code
Title 33 - ENVIRONMENTAL QUALITY
Part V - Hazardous Wastes and Hazardous Materials
Subpart 3 - Natural Resources
Chapter 304 - Transportation of Hazardous Liquids by Pipeline-Operation and Maintenance [49 CFR Part 195 Subpart F]
Section V-30412 - Inspection of Rights-of-Way and Crossings under Navigable Waters [49 CFR 195.412]

A. Each operator shall, at intervals not exceeding three weeks, but at least 26 times each calendar year, inspect the surface conditions on or adjacent to each pipeline right-of-way. Methods of inspection include walking, driving, flying or other appropriate means of traversing the right-of-way. [ 49 CFR 195.412(a)]

B. Except for offshore pipelines, each operator shall, at intervals not exceeding five years, inspect each crossing under a navigable waterway to determine the condition of the crossing. [ 49 CFR 195.412(b)]