Authority: IC 13-14-8; IC 13-15-1-2; IC 13-15-2-1; IC 13-18-2; IC 13-18-3

Affected: IC 13-11-2; IC 13-13-5-1; IC 13-18-4

Sec. 9. In addition to applicable pretreatment standards, an industrial user shall comply with the following:

1. (1) An effluent limitation more stringent than the applicable pretreatment standard that is necessary to prevent:

   1. (A) interference in the POTW receiving the discharge; or
   2. (B) violation of a provision of section 2(a) of this rule or a state or federal water quality standard that is applicable to the state waters ultimately receiving the discharge from the industrial user after discharge from the POTW.

2. (2) Any requirement by the commissioner to implement appropriate best management practices (BMPs) and to develop a BMP plan in accordance with 327 IAC 5-9 if the industrial user uses, manufactures, stores, handles, or discharges any pollutant listed as toxic under Section 307(a)(1) of the Clean Water Act (33 U.S.C. 1317(a)(1)) or any pollutant listed as hazardous under Section 311 of the Clean Water Act (33 U.S.C. 1321) that may cause or allow significant amounts of that pollutant to reach waters of the state, whether directly or after discharge from the POTW, from certain ancillary manufacturing operations, including:

   1. (A) materials storage areas;
   2. (B) in-plant transfer;
   3. (C) process and materials handling areas;
   4. (D) loading and unloading operations;
   5. (E) plant site run-off; and
   6. (F) sludge and waste disposal areas.

(Water Pollution Control Division; 327 IAC 5-18-9; filed Oct 10, 2000, 3:02 p.m.: 24 IR 303; readopted filed Oct 18, 2024, 1:57 p.m.: 20241113-IR-327230810RFA)