1 Pa. Code § 33.15
Except as may be otherwise provided by statute or ordered or requested by an agency, and except as provided by §§ 35.193 and 35.212(d) (relating to filing and service of briefs; and content and form of briefs on exceptions), at the time pleadings, submittals or documents other than correspondence are filed with the agency, there shall be furnished to the agency an original and two conformed copies of the papers, including exhibits, if any.
1 Pa. Code § 33.15
This section cited in 4 Pa. Code §110.2 (relating to exhibits); 7 Pa. Code §1.24 (relating to specifications for equipment and sanitation prior to granting inspection); 12 Pa. Code § 11.6 (relating to filings); 16 Pa. Code §42.13 (relating to number of copies); 19 Pa. Code §13.9 (relating to number of copies); 25 Pa. Code § 1.5 (relating to procedures); 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 §111.22 (relating to filing); 34 Pa. Code §111.23 (relating to answers); 34 Pa. Code §111.32 (relating to form/content); 34 Pa. Code §111.33 (relating to specific petitions/requirements); 34 Pa. Code §111.34 (relating to answers to petitions); 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 challenge proceedings); 37 Pa. Code §197.4 (relating to filings); 40 Pa. Code §17.7 (relating to exhibits); 52 Pa. Code §1.37 (relating to number of copies); 52 Pa. Code §1001.37 (relating to number of copies to be filed); 55 Pa. Code §41.15 (relating to copies of documents); 58 Pa. Code §495a.6 (relating to number of copies); 61 Pa. Code §703.5 (relating to other submissions); and 67 Pa. Code §491.7 (relating to filing requirements).