327 IAC 5-23-5 Reclassification of wastewater treatment plants

Sec. 5. (a) A wastewater treatment plant may be reclassified by the commissioner if any of the following situations exist: (1) The wastewater treatment plant utilizes special or complex equipment or features of design requiring more difficult operation. (2) The wastewater is unusually difficult to treat. (3) More than ordinary chemical, bacteriological, or biological nutrient removal controls are required. (4) An unusually high degree of skill is required in the operation of the wastewater treatment plant to ensure continuous production of effluent that meets the water quality requirements of the receiving stream and the NPDES permit limitations. (5) A significant change occurs to the wastewater treatment plant by the addition or removal of the following: (A) Flow volume. (B) Equipment. (C) Pollutant loading. (D) Wastestreams. (E) Treatment processes. (b) When considering reclassification of a wastewater treatment plant, the commissioner shall do the following: (1) Base reclassification of the wastewater treatment plant on information: (A) supplied by the governing body or owner in a construction permit application for modification of the wastewater treatment plant; (B) supplied by the governing body or owner in a NPDES or industrial waste pretreatment (IWP) permit application or application for modification of an NPDES or IWP permit; or (C) identified by the department that is applicable to the classification of the wastewater treatment plant. (2) Give written notice of a reclassification to the governing body or owner and to the responsible charge operator indicating the following: (A) The classification of certified operator that is necessary to supervise the reclassified wastewater treatment plant. (B) A date by which time a certified operator: (i) is required to comply with clause (A); and (ii) must be in responsible charge of the reclassified wastewater treatment plant. (c) The permittee shall notify the commissioner of any significant change or planned change to the wastewater treatment plant or contributing wastestreams that may be cause for a change in classification.