Authority: IC 13-14-8-7; IC 13-15-1-2; IC 13-15-2-1; IC 13-18-3-1; IC 13-18-12- 4

Affected: IC 13-11-2; IC 13-12-3-1; IC 13-18; IC 13-30-2-1

Sec. 31.5. "Lagoon" means a type of storage structure that is constructed wholly or partially below the original grade of the earth surface. A steel tank that is installed partially below ground is not a lagoon but a storage structure under 327 IAC 6.1-8.

(Water Pollution Control Division; 327 IAC 6.1-2-31.5; filed Jul 7, 2003, 4:25 p.m.: 26 IR 3599; readopted filed Nov 21, 2007, 1:16 p.m.: 20071219-IR-327070553BFA; readopted filed Jul 29, 2013, 9:21 a.m.: 20130828-IR- 327130176BFA; readopted filed Jun 14, 2019, 1:59 p.m.: 20190710-IR-327190246BFA; readopted filed Oct 18, 2024, 1:57 p.m.: 20241113-IR-327230810RFA)