Mapping and recording of nonconforming uses, structures and lots. The Zoning Officer may perform a survey of the Borough and record and map all uses, structures and lots nonconforming to the district requirements set forth in this chapter. Such record and map shall be available for inspection at the Borough Municipal Building. For each property identified, the Zoning Officer shall have on file a written record documenting the evidence and reasoning that led to the assignment of nonconforming status. If the survey, record, and map are not done, or are incomplete, the nonconforming status may be determined when applications are filed with the Borough.