1 Pa. Code § 35.29
Petitions to intervene shall set out clearly and concisely the facts from which the nature of the alleged right or interest of the petitioner can be determined, the grounds of the proposed intervention, and the position of the petitioner in the proceeding, so as fully and completely to advise the parties and the agency as to the specific issues of fact or law to be raised or controverted, by admitting, denying or otherwise answering, specifically and in detail, each material allegation of fact or law asserted in the proceeding, and citing by appropriate reference the statutory provisions or other authority relied on.
1 Pa. Code § 35.29
This section cited in 1 Pa. Code § 31.3 (relating to definitions); 7 Pa. Code § 131.14 (relating to interveners); 7 Pa. Code § 179.17 (relating to intervention); 25 Pa. Code § 1021.81 (relating to intervention); 28 Pa. Code § 301.7 (relating to fair hearing); 34 Pa. Code § 111.15 (relating to no other pleadings allowed); 34 Pa. Code § 131.32 (relating to petitions except petitions for joinder and challenge proceedings); 34 Pa. Code § 225.8 (relating to petition to intervene); 37 Pa. Code § 197.40a (relating to petition to intervene); 40 Pa. Code § 17.13 (relating to protests/intervention procedure); 49 Pa. Code § 19.33 (relating to intervention); 52 Pa. Code § 5.73 (relating to form and content of petitions to intervene); 52 Pa. Code § 1005.33 (relating to form and content of petitions to intervene); 58 Pa. Code § 493a.12 (relating to intervention); 61 Pa. Code § 703.2 (relating to petition content); 67 Pa. Code § 441.3 (relating to permit application procedure); and 67 Pa. Code § 491.6 (relating to notice and conduct of hearing).