# Ind. Code § 13-18-3-2.1: Deadline for department to complete antidegradation review in certain circumstances; extension

> Indiana · Statutes · In force

URL: https://www.frixlaw.com/law-library/statutes/STATE_IN_T13_A18_C3_S13-18-3-2.1

## Section

- **Citation:** Ind. Code § 13-18-3-2.1
- **Heading:** Deadline for department to complete antidegradation review in certain circumstances; extension
- **Jurisdiction:** Indiana
- **Kind:** Statutes
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Indiana Code / Title 13 / Article 18 / Chapter 3 / Section 13-18-3-2.1

## Text

Sec. 2.1. (a) If:

(1) a discharge results from an activity for which:

(A) an NPDES permit subject to IC 13-15-4-1(a)(2)(B), IC 13-15-4-1(a)(3)(B), or IC 13-15-4-1(a)(4); or

(B) a modification or renewal of a permit referred to in one (1) of the sections referred to in clause (A);

is sought; and

(2) the permit application or application to modify or renew the permit proposes a new or increased discharge that would result in a significant lowering of water quality as defined in IC 13-18-3-2(l)(1);

the deadline for the department to complete the antidegradation review under 40 CFR 131.12 and 40 CFR Part 132, Appendix E with respect to the discharge is the deadline for the commissioner to approve or deny the NPDES permit application under IC 13-15-4-1.

(b) The commissioner may extend for cause for not more than ninety (90) days the deadline under subsection (a) for the department to complete the antidegradation review.

As added by P.L.78-2009, SEC.16. Amended by P.L.112-2016, SEC.18; P.L.85-2017, SEC.67.

## Nearby sections

- [Ind. Code § 13-18-3-1 Water pollution rules](https://www.frixlaw.com/law-library/statutes/STATE_IN_T13_A18_C3_S13-18-3-1.md)
- [Ind. Code § 13-18-3-1.5 Adopting of rules concerning the reclamation and reuse of treated wastewater](https://www.frixlaw.com/law-library/statutes/STATE_IN_T13_A18_C3_S13-18-3-1.5.md)
- [Ind. Code § 13-18-3-2 Adoption of rules to implement federal acts; designation of outstanding state resource waters; antidegradation review of certain applications; classification of all state waters](https://www.frixlaw.com/law-library/statutes/STATE_IN_T13_A18_C3_S13-18-3-2.md)
- [Ind. Code § 13-18-3-2.1 Deadline for department to complete antidegradation review in certain circumstances; extension](https://www.frixlaw.com/law-library/statutes/STATE_IN_T13_A18_C3_S13-18-3-2.1.md)
- [Ind. Code § 13-18-3-2.3 Designated use change to CSO wet weather category; long term control plans](https://www.frixlaw.com/law-library/statutes/STATE_IN_T13_A18_C3_S13-18-3-2.3.md)
- [Ind. Code § 13-18-3-2.4 Review of feasibility of implementing additional or new control alternatives to attain water quality standards](https://www.frixlaw.com/law-library/statutes/STATE_IN_T13_A18_C3_S13-18-3-2.4.md)
- [Ind. Code § 13-18-3-2.5 CSO wet weather limited use subcategory established; application after approval of long term control plan; other requirements; EPA approval; monitoring and review; rules](https://www.frixlaw.com/law-library/statutes/STATE_IN_T13_A18_C3_S13-18-3-2.5.md)
- [Ind. Code § 13-18-3-2.6 Permit schedules of compliance](https://www.frixlaw.com/law-library/statutes/STATE_IN_T13_A18_C3_S13-18-3-2.6.md)
- [Ind. Code § 13-18-3-3 Repealed](https://www.frixlaw.com/law-library/statutes/STATE_IN_T13_A18_C3_S13-18-3-3.md)
- [Ind. Code § 13-18-3-4 Orders; review by administrative law judge](https://www.frixlaw.com/law-library/statutes/STATE_IN_T13_A18_C3_S13-18-3-4.md)
- [Ind. Code § 13-18-3-5 Repealed](https://www.frixlaw.com/law-library/statutes/STATE_IN_T13_A18_C3_S13-18-3-5.md)
- [Ind. Code § 13-18-3-6 Enforcement](https://www.frixlaw.com/law-library/statutes/STATE_IN_T13_A18_C3_S13-18-3-6.md)
- [Ind. Code § 13-18-3-7 Orders to acquire, construct, repair, alter, or extend plants](https://www.frixlaw.com/law-library/statutes/STATE_IN_T13_A18_C3_S13-18-3-7.md)
- [Ind. Code § 13-18-3-8 Sealing of mines and wells](https://www.frixlaw.com/law-library/statutes/STATE_IN_T13_A18_C3_S13-18-3-8.md)

---

Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/STATE_IN_T13_A18_C3_S13-18-3-2.1. Check the current official text before relying on it. Not legal advice.