Authority: IC 13-13-5; IC 13-14-8; IC 13-14-9; IC 13-15-1-2; IC 13-15-2-1; IC 13-18-2

Affected: IC 13-11-2; IC 13-15; IC 13-18

Sec. 1. In addition to the definitions contained in IC 13-11-2 and 327 IAC 3-1, the following definitions apply throughout this rule:

1. (1) "Accessories" means the constituent elements of a sanitary collection system.
2. (2) "American National Standards" means the recommended standards certified by the American Water Works Association.
3. (3) "AWWA/ANS standards" means the American National Standard approved by the American Water Works Association.

4. (4) "Authorized representative" means a person as described by at least one (1) of the following:

   1. (A) A principal executive officer or ranking elected official of a local governmental unit.
   2. (B) The holder of a position of responsibility for the overall operation of the unit's water pollution treatment/control facility.
   3. (C) A named individual for whom authorization has been submitted in writing to the commissioner by one (1) of the individuals of clause (A) or (B).
5. (5) "Collection system" means the composite network of gravity sewers, force mains, lift stations, and other accessories used to receive and to transport sewage to a water pollution treatment/control facility.
6. (6) "Downstream" means the direction of flow toward the water pollution treatment/control facility.
7. (7) "Force main" means a sanitary sewer that utilizes a mode of force to transport wastewater.
8. (8) "Gravity sewer" means a sanitary sewer that utilizes gravity to transport wastewater.
9. (9) "One hundred (100) year flood" means a flood with an occurrence probability of one percent (1%) each year as determined by the Indiana department of natural resources.

10. (10) "Surface water" means water, regardless of being publicly or privately owned, that meets the following conditions:

    1. (A) The water is exposed to the atmosphere.

    2. (B) The water wholly or partially:

       1. (i) is within;
       2. (ii) flows through; or
       3. (iii) borders upon;
    3. Indiana.
11. (11) "Twenty-five (25) year flood" means a flood with an occurrence probability of four percent (4%) each year as determined by the Indiana department of natural resources.
12. (12) "Upstream" means the direction of flow opposite to downstream.

(Water Pollution Control Division; 327 IAC 3-6-1; filed May 17, 1999, 12:11 p.m.: 22 IR 3085; errata filed Dec 1, 2000, 5:25 p.m.: 24 IR 1033; readopted filed Apr 11, 2005, 2:45 p.m.: 28 IR 2470; readopted filed Jun 15, 2011, 11:15 a.m.: 20110713-IR- 327110193BFA; readopted filed Jun 29, 2017, 9:34 a.m.: 20170726-IR-327170225BFA; readopted filed May 12, 2023, 1:07 p.m.: 20230607-IR-327230079BFA; readopted filed Oct 18, 2024, 1:57 p.m.: 20241113-IR-327230810RFA)