10. What must be reviewed and updated at least once each calendar year, with intervals not exceeding 15 months?

A. The communication networks
B. The contact list of public officials
C. The pipeline operating limits
D. The Operator's written plan



Answer :

Final answer:

The Operator's written plan needs regular review and updates to maintain operational efficiency and safety.


Explanation:

The Operator's written plan must be reviewed and updated at least once each calendar year, with intervals not exceeding 15 months. This plan is crucial in ensuring operational efficiency, safety, and compliance.


Learn more about Operational plan review and updates here:

https://brainly.com/question/38071136