This notice of intent is not a request for proposals or quotations. The authority for negotiating a sole source bases is made under 41 U.S.C. 253 (c)(1) and FAR 13.106-1 which permits soliciting from a single source, if the contracting officer determines that the circumstances of the contract action deem only one source is reasonably available. The North American Industry Classification System (NAICS) Code is 519130. Any challenges to this sole source requirement must be received by June 13, 2012 NO later than 3:00pm Washington D.C. local time, in writing, and sent to [email protected] to be considered by the Government for the purpose of determining whether or not to compete the requirement. Challenges must include information sufficient to enable the Government's to determine that its needs as stated herein shall be met. A statement by a potential vendor without relevant supporting documentation, that it can provide this data, shall not be considered sufficient to determine the Government's needs shall be met. A determination by the Government not to compete this proposed requirement based on responses to this notice is solely within the discretion of the Government. If the FCC identifies no other capable sources by 3:00p.m Washington D.C. local time on June 13, 2012, the FCC will issue a Firm-Fixed Price Purchase Order to Informa UK Ltd.