The RFP will provide deadlines for the submission of proposals. OAO may issue separate RFPs and/or establish separate deadlines for different types of proposals, different award instruments, or different topics or phases of the assistance programs. If proposals are not received by applicable deadlines, they will not be considered for funding. Exceptions will be considered only when extenuating circumstances exist, as determined by OAO, and justification and supporting documentation are provided by the applicant. Conformance with preparation and submission instructions is required and will be strictly enforced unless a deviation has been approved. OAO may establish additional requirements. OAO may return without review proposals that are not consistent with the RFP instructions.