(2) The order shall include but need not be limited to the following:

1. (a) The name and location of the transfer station, receiving station or out-of-station pasteurization plant;
2. (b) The reason(s) for the suspension or revocation, and a description of such operation;
3. (c) The date the suspension or revocation is or will become effective.

(3) Orders for suspension or revocation shall be served on the permittee or his or her authorized agent as follows:

1. (a) By sending a copy of the order by registered or certified mail, return receipt requested; or
2. (b) Personally, by any person authorized by the Department to serve; or

3. (c) If the aforementioned methods of service are unsuccessful, service may be made by any person authorized to serve civil process as follows:

   1. 1. By leaving a copy of the order at his or her last and usual place of abode or;
   2. 2. By posting a copy of the notice in a conspicuous place on or about the premises if his or her last and usual place of abode is unknown.