Should I submit the original document if I need a notarization of the translation?

No, you don't need to provide the original for this purpose. If the translation was performed using a copy of the document, then it is attached to it, after which it is handed over to the notary for certification. However, if the organization, for which the text is being prepared, requires the original, then the original should be attached. The matter is that the notary does not certify the translation itself but the translator's signature. Therefore, the presence or absence of the original does not matter to the notary. Only the requirements of the accepting organization need to be taken into account in this case.