(b)(4) The contracting officer may rely on this exception in the case where only one source is available to provide additional units or replacement items under a specific make and model requirement, but only where the CPO has determined in accordance with the agency's standardization program that only the specific make(s) and model(s) will satisfy the agency's needs.

(d)(1)(iii) For contract awards to facilitate the response to or recovery from a natural disaster, act of terrorism, or other man-made disaster, that relies on this exception, the period of performance shall be limited to the minimum period necessary to meet the urgent and compelling requirements of the work to be performed and to enter into another contract for the required goods or services through the use of competitive procedures, but in no event shall the period of performance exceed 150 days, unless the Head of the Contracting Activity (or higher approval authority if required by (FAR) 48 CFR 6.304 or DHS procedures) determines that exceptional circumstances apply, approving the justification as set forth in (HSAR) 48 CFR 3006.304. The limitation on the period of performance applies to contracts awarded in response to, or to recovery from:

(A) A major disaster or emergency declared by the President under Title IV or Title V of the Robert T. Stafford Disaster Relief and Emergency Assistance Act, as amended (42 U.S.C. 5121-5207);

(B) An uncontrolled fire or fire complex, threatening such destruction as would constitute a major disaster, and for which the Federal Emergency Management Agency has approved a fire management assistance declaration in accordance with regulatory criteria at 44 CFR 204.21; or

(C) An incident for which the National Operations Center (NOC), through the National Response Coordination Center (NRCC), coordinates the activation of the appropriate Emergency Support Functions and the Secretary of Homeland Security has designated a Federal Resource Coordinator (FRC) to manage Federal resource support.

(c)(1)(ii) Requests shall be prepared in writing by the contracting officer, using the format found in (HSAR) 48 CFR 3001.704, and submitted through the HCA to the CPO for review and transmittal to the Secretary for approval.

(a)(9)(iv) For a proposed contract subject to the restrictions of (HSAR) 48 CFR 3006.302-270(d)(1)(iii) and where (FAR) 48 CFR 6.302-2 is cited as the authority, the exceptional circumstances allowing for an award for a period of performance in excess of 150 days.

A justification for other than full and open competition that cites (FAR) 48 CFR section 6.302-2 as its authority shall be approved in writing by the HCA (unless a higher approval authority is required in accordance with (FAR) 48 CFR section 6.304 or DHS procedures) for a proposed DHS contract to facilitate the response to or recovery from a natural disaster, act of terrorism, or other man-made disaster with a period of performance in excess of 150 days. The justification should make plain the exceptional circumstances that justify the duration of the contract. This authority may not be redelegated by the HCA.