Specifications include, but are not limited to:OST has issued this RFP to procure services from a vendor(s) for administration of the Plans under two distinct scenarios. Scenario 1 – Vendors will submit a bid to provide recordkeeping/administrative services as a single vendor for the 457(b) plan, 403(b) plan, and frozen 401(a) plan. Scenario 2 – Vendors will submit a bid to provide recordkeeping/ administrative services as a single vendor for the 457(b)/401(a) plan and as one of no more than three vendors offered under the 403(b) plan. Vendors under this scenario will be asked to propose separately their common remittance and compliance services, with one vendor being chosen to provide these services as well. Note that all vendors bidding on this scenario must provide a bid encompassing the 457(b)/401(a) and 403(b) plans. Vendors may not provide proposals to be considered as one of the 403(b) vendors only. In this scenario, all vendors will use the same investment line up. Vendors may propose under one or both scenarios (see section IV. B for the Evaluation Criteria). Vendors should clearly and succinctly explain any service differences between the 403(b) and the 457(b)/401(a) within their responses to the questionnaire presented in Attachment 6