The sign-in log for a lift station serves primarily to:

• A. identify who makes changes in station operation
• B. budget lift station visits
• C. track employee movement for disciplinary actions
• D. all of the above

Answer: (A)

A sign-in log at a lift station creates an audit trail of who accessed the facility and who made operational changes, along with when those actions occurred. This supports accountability, safety, and proper authorization—when something is adjusted or a procedure is followed, you can see who did it and verify it was authorized. The log also helps with troubleshooting and regulatory reporting by providing a record of changes and maintenance actions. Budgeting visits or tracking disciplinary actions aren’t the primary purpose, since those tasks rely on separate records and processes. The main function is to identify who makes changes in station operation.