Final answer:
The question pertains to the subject of Business and discusses the requirement for written notice in relation to plant closings or large layoffs. However, the specific number of hours required for notification in the context of citywide hot work operations is not mentioned in the given information.
Step-by-step explanation:
According to the given information, the question is related to the topic of business. It specifically addresses the requirement for written notice in relation to plant closings or large layoffs. The question asks about the number of hours in advance the owner of the premises must be notified prior to hot work operations in the citywide context.
However, the information provided in the question does not directly mention the number of hours required for hot work operations. Therefore, it would not be possible to provide a specific answer to the question based on the given information. In order to obtain the correct answer, additional information or research related to citywide hot work operations would be needed.
It is important to highlight that this answer is based solely on the information provided in the question, and it does not include the specific number of hours required for notification.