1 Pa. Code § 35.147
If an application for the taking of a deposition so warrants, the agency head or presiding officer will issue and serve, within a reasonable time in advance of the time fixed for taking testimony, upon the participants an authorization naming the witness whose deposition is to be taken, and the time, place and notarial officer before whom the witness is to testify, but the time, place and notarial officer so specified may or may not be the same as those named in the notice and application.
1 Pa. Code § 35.147
This section cited in 1 Pa. Code § 35.137 (relating to oral examination); 4 Pa. Code §89.31 (relating to investigation); 4 Pa. Code §265.3 (relating to level II hearings); 4 Pa. Code §607a.13 (relating to subpoenas); 7 Pa. Code §179.16 (relating to limited discovery); 25 Pa. Code §1021.102 (relating to discovery); 34 Pa. Code §95.94 (relating to depositions); 34 Pa. Code §131.62 (relating to oral depositions); 34 Pa. Code §131.63 (relating to time for taking oral depositions); 34 Pa. Code §131.64 (relating to notice of oral depositions); 34 Pa. Code §131.65 (relating to objections to tak-ing of oral depositions); 34 Pa. Code §131.68 (relating to discovery of records); 34 Pa. Code §131.70 (relating to discovery of statements of parties or witnesses); 34 Pa. Code §131.204 (relating to UEGF subpoenas and interrogatories); 40 Pa. Code §15.49 (relating to deposition); 52 Pa. Code §5.344 (relating to approval by presiding officer); 52 Pa. Code §1005.162 (relating to depositions); 55 Pa. Code §41.120 (relating to limitations on scope of discovery); and 58 Pa. Code 493a.11 (relating to discovery).