Section 1016.19 - Review, classification and marking of classified information(a)Classification. Restricted Data generated or possessed by an Access Permit holder must be appropriately classified and marked in accordance with 10 CFR part 1045 . CG-DAR-2, "Guide to the Declassified Areas of Nuclear Energy Research U 08/98," will be furnished each permittee. In the event a permittee originates classified information which falls within the definition of Restricted Data or information for which the permittee is not positive that the information is outside of that definition and CG-DAR-2 does not provide positive classification guidance for such information, the permittee shall designate the information as Confidential, Restricted Data and request classification guidance from the DOE through the Classification Officer at the cognizant DOE or NNSA office. If the DOE Classification Officer does not have authority to provide the guidance, he will refer the request to the Director, Office of Classification, EHSS-60/Germantown Building, Office of Environment, Health, Safety and Security, U.S. Department of Energy, 1000 Independence Avenue SW., Washington, DC 20585-1290.(b)Challenges. If a person receives a document or other classified matter which, in his opinion, is not properly classified, or omits the appropriate classification markings, he is encouraged to challenge the classification and there shall be no retribution for submitting a challenge. Challenges shall be submitted in accordance with 10 CFR part 1045.(c)Classification markings. Restricted Data generated or possessed by an individual approved for access must be appropriately identified and marked in accordance with 10 CFR part 1045 , Nuclear Classification and Declassification. Questions and requests for additional direction or guidance regarding the marking of classified matter may be submitted to the Director, Office of Classification, EHSS-60/Germantown Building, Office of Environment, Health, Safety and Security, U.S. Department of Energy, 1000 Independence Avenue SW., Washington, DC 20585-1290. 82 FR 41507 , Sept. 1, 2017, as amended at 88 FR 41294 , June 26, 2023 82 FR 41507 , 10/2/2017; as amended at 88 FR 41294 , 6/26/2023