Burden of proof generally describes the standard that a part seeking to prove a fact in court must satisfy to have that fact legally established. The burden of proof is on the individual or entity that files a Petition for Administrative Review or a Petition for Administrative Review and for Stay of Effectiveness. Specifically, IC 4-21.5-3-14 provides that at each stage of administrative review, “the agency or other person requesting that an agency take action or burden of going forward with proof of the request or affirmative defense.” In cases where the Petitioner is requesting that the agency do something (e.g., approve an application, grant a variance request, issue or deny a permit), the Petitioner will be responsible for proving s/he/it is entitled to whatever Petitioner sought. The burden rests upon IDEM when it is enforcing a Commissioner’s Order.