I think article 16 section 3.3 paragraph 3, touches on this. Something along the lines of 5 days after citation to have an SAP evaluation. The language does not seem real cut and dry........on par with the rest of this contract.
Edit to add (Found in my book, but since found on net to copy paste):
Any driver cited for Driving Under the Influence who does not have
his/her license suspended, or who has limited driving privileges,
shall be assessed by a SAP within five (5) working days of the citation.
If the SAP determines the driver does not require rehabilitation,
then he/she shall be allowed to return to driving. Until the
assessment is completed, the driver shall be allowed to work inside
in accordance with the paragraph above. If rehabilitation is
required, the above paragraph shall also be applicable. The one time
right to rehabilitation provided in Article 35, Section 4.11 shall not
be applicable to a driver who completes a rehabilitation program
under this paragraph, unless, as a result of the DUI citation, the driver
is convicted or loses his/her license for driving.