Ind. Admin. Code tit. 327, r. 6.1-7-1 – Pollutant-bearing water land application

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

Sec. 1. (a) Land application or injection of pollutant-bearing water must be conducted under the supervision of:

(1) a certified wastewater treatment plant operator licensed under 327 IAC 5-22; or
(2) a person with at least one (1) year of experience in land application management practices and procedures as demonstrated by specific facts contained in a signed affidavit.

The license number or the affidavit must be submitted to the commissioner with the permit application and within thirty (30) days of any change in supervisor of the activity.

(b) Any application of domestic wastewater or industrial process wastewater to the land is prohibited unless a valid site-specific land application permit in accordance with 327 IAC 6.1-1-3(b) has been obtained from the commissioner prior to the application of the domestic wastewater or industrial process wastewater.

(c) Any person who prepares industrial storm water that exceeds any of the pollutant concentrations in Table 10 of subsection (d) shall obtain a permit under subsection (b).

(d) Industrial storm water that exceeds any of the pollutant concentration limits in Table 10 is subject to this rule:

Table 10
Pollutant Concentrations
for Industrial Storm Water
Pollutant	mg/l
Arsenic	0.07
Cadmium	0.06
Copper	2.57
Lead	0.51
Mercury	0.02
Molybdenum	0.06
Nickel	0.72
Selenium	0.17
Zinc	4.80

(e) Land application of pollutant-bearing water is excluded from any other requirements of this rule as long as the following are applicable:

(1) Meets the requirements for notification under 327 IAC 6.1-7.5-1.
(2) Applies at a rate of less than two hundred fifty thousand (250,000) gallons per year.
(3) Applies at a rate of less than five thousand (5,000) gallons per acre per week.
(4) Applies at a rate of less than fifty thousand (50,000) gallons per acre per year.
(5) Applies a pollutant-bearing water that contains less than or equal to one thousand (1,000) pounds per million gallons of plant available nitrogen. Plant available nitrogen is calculated using the formula in subsection (f).
(6) Is not a domestic wastewater.
(7) Does not exceed pollutant concentration in Table 10 in subsection (d).

(f) The following formula for plant available nitrogen must be used to calculate the amount of plant available nitrogen required by subsection (e)(5):

Total N	=	Total Kjeldahl N + Nitrate N.
Organic N	=	Total N - (Ammonia N + Nitrate N).
Pounds Organic N	=	Organic N × 2.5.
Pounds of Ammonia N	=	Ammonia N × 8.34.
Pounds of Nitrate N	=	Nitrate N × 8.34.
Plant available nitrogen	=	Pounds of Organic N + Pounds of Ammonia N + Pounds of Nitrate N.

(Water Pollution Control Division; 327 IAC 6.1-7-1; filed May 15, 1998, 10:20 a.m.: 21 IR 3805; readopted filed Jan 10, 2001, 3:23 p.m.: 24 IR 1518; filed Jul 7, 2003, 4:25 p.m.: 26 IR 3622; 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)