After completion of construction of the public utility facilities from approved plans
on any project herein classified, the developer or owner responsible for the construction
shall prepare and submit to the administrator three copies of as-built plans, based
on accurate, field-obtained information, to show actual conditions of the finished
construction. The as-built plans shall show revisions in and permanently indicate
changes on the original tracings or master sheets which were made to the plans and/or
specifications approved by the administrator for construction. As-built plans shall
be prepared and certified by a professional engineer registered in the Commonwealth
of Virginia.