1 Pa. Code § 33.37
The following number of copies of documents shall be served on each other participant in a proceeding:
1 Pa. Code § 33.37
This section cited in 1 Pa. Code § 33.32 (relating to service by a participant); 16 Pa. Code §42.34 (relating to motions); 34 Pa. Code §111.12 (relating to filing, service and proof of service); 34 Pa. Code §111.14 (relating to motions to quash); 34 Pa. Code §111.16 (relating to briefs: content and form and time for filing); 34 Pa. Code §131.32 (relating to petitions except petitions for joinder and challenge proceedings); 34 Pa. Code §131.33 (relating to answers except answers to petitions for joinder and penalty proceedings); 34 Pa. Code §131.56a (relating to withdrawal of appearance); 40 Pa. Code §17.13 (relating to protests/intervention procedure); and 52 Pa. Code §1.59 (relating to number of copies to be served); 52 Pa. Code §1001.57 (relating to number of copies to be served); 55 Pa. Code §41.15 (relating to copies of documents); 61 Pa. Code §703.5 (relating to other submissions); and 61 Pa. Code §703.6 (relating to service).