What is a critical aspect of the Survey Plat related to non-surveyed property lines?

The correct choice emphasizes the importance of transparency and accuracy in surveying practices. When it comes to non-surveyed property lines, it's essential to mention the source of any derived information utilized in the creation of the survey plat. This transparency ensures that all parties involved understand the origins of the data presented. It helps to clarify how the property lines were established, especially if they are based on estimates, historical data, or maps rather than direct measurements. By documenting the source, surveyors provide a reliable context for the information, which can prevent misunderstandings or disputes about property boundaries later on.

Providing the source of derived information also informs how much weight can be given to those non-surveyed property lines and if any additional verification may be necessary. This practice is a hallmark of professional surveying standards and contributes to the trustworthiness of the plat as a legal document.