Agency SEPA procedures shall designate or provide a method of designating the responsible official with speed and certainty (WAC 197-11-906 (1)(d)). This designation may vary depending upon the nature of the proposal. The responsible official shall carry out the duties and functions of the agency when it is acting as the lead agency under these guidelines. Since it is possible under these rules for an agency to be acting as a lead agency prior to actually receiving an application for a license to undertake a private project, designation of the first department within the agency to receive an application as the responsible official will not be sufficient.