(90) Prior to referral by the Supply Chain HCA or chief of the contracting office for those DLA activities not designated as a contracting activity, to HQ DLA, ATTN: J-73, of a proposed waiver of the CAS requirements, the Commander/Director shall personally negotiate with the proposed contractor and attempt to obtain the required statement(s). When it is determined that the Commander/Director should not personally conduct negotiations, a detailed memorandum setting forth the rationale shall be forwarded with the referral to HQ DLA.