(1) A small tank barge owner or operator shall submit evidence that demonstrates financial responsibility under WAC 317-50-040 for each barge entering or operating in Washington waters. The evidence must be included in the oil spill prevention plan submitted under chapter 317-21 WAC and on file with the office twenty-four hours before the barge enters Washington waters.

(2) The following are considered significant changes for the purpose of updating a barge's oil spill prevention plan under WAC 317-21-530:

(a) A change in the term or amount of coverage;

(b) A change in the type of coverage;

(c) Termination of coverage;

(d) A new coverage provider; and

(e) A change that may affect the opinion of the independent certified public accountant submitted to the office under WAC 317-50-050(4).