Wash. Admin. Code § 246-25-125
An applicant shall submit additional relevant information it believes is sufficient to support its petition or request for an informal opinion. The commission or attorney general may require the submission of additional information as may be required to complete the analysis necessary to form an opinion or respond to a written petition. Depending on the size, scope and nature of the proposed transaction, the material may include some or all of the following:
(6) Advertisements, brochures, or other publications used for marketing the parties' products or services within the state of Washington during the last fiscal year.
If the proposal includes collaboration between parties, including but not limited to mergers or joint ventures, the commission or the attorney general may request some or all of the following additional information depending on the size, scope, and nature of the proposed transaction:
(5) A statement describing whether arrangements less restrictive to competition would achieve the same or similar benefits as those described in response to section (4) above.
If the proposal is for the merger of acute care inpatient hospitals, the commission or the attorney general may request some or all of the following additional information for the three years prior to the proposed merger, depending on the size, scope, or nature of the proposed merger:
[Statutory Authority: RCW 43.72.310. WSR 99-04-049, recodified as § 246-25-125, filed 1/28/99, effective 1/28/99; WSR 95-04-112, § 245-02-125, filed 2/1/95, effective 3/4/95.]