Section 15-502 - Endorsement of documents(a) Before a professional land surveyor or licensed property line surveyor issues to a client or submits to a public authority any plan, plat, report, or specification, the professional land surveyor or licensed property line surveyor who prepared the document shall endorse on the document the licensee's:(2) seal or a facsimile of the seal.(b) A public authority may not accept any surveying plan, plat, report, or specification unless the document is endorsed as required under subsection (a) of this section.