Section 327IAC6.1-4-6. Site restrictions

   (a) Land application of a biosolid or industrial waste product must not be conducted within:

Feature	Surface Application	Injection	Incorporation by End of Day
Surface waters or the surface conduit to a subsurface feature	300 feet	33 feet	33 feet
Residence	300 feet	To property line	300 feet
Any well	50 feet	50 feet	50 feet
Potable well or drinking water spring	200 feet	200 feet	200 feet
Any public building or public or nonpublic school	50 feet from property line	50 feet from property line	50 feet from property line

  (b) Waivers must be obtained from the residence owner and, if applicable, tenant of the residence:

(1) for each year in which biosolid or industrial waste product is proposed to be applied at distances less than the setback distance for a residence in subsection (a); and

(2) prior to the application of the biosolid or industrial waste product at distances less than the setback distance for a residence in subsection (a).

  (c) Land application of a biosolid or industrial waste product must not be conducted on slopes greater than:

	Surface Application	Injection	Incorporation by End of Day
Liquid	6%	18%	6%
Dewatered	12%	NA	18%

  (d) Biosolid or industrial waste product must not be applied to land unless there is a minimum depth of twenty (20) inches of soil overlying bedrock.

  (e) The soil pH must be 5.5 or greater at the time of land application for the following:

(1) Biosolid.

(2) Biosolid containing an industrial waste product with a cadmium concentration of two (2) milligrams per kilogram or less than two (2) milligrams per kilogram.

(3) Industrial waste product with a cadmium concentration of two (2) milligrams per kilogram or less than two (2) milligrams per kilogram.

  (f) The soil pH must be 6.5 or greater at the time of land application for the following:

(1) Industrial waste product with a cadmium concentration greater than two (2) milligrams per kilogram.

(2) Biosolid containing an industrial waste product with a cadmium concentration greater than two (2) milligrams per kilogram.

  (g) The soil pH value shall be:

(1) obtained by sampling the soil to the depth of cultivation or depth of placement of the biosolid or industrial waste product, whichever is greater;

(2) analyzed by the electrometric method*;

(3) collected as one (1) representative composite sample per every twenty-five (25) acres or fraction thereof within the application site; and

(4) be valid only if the analyses were performed within the last two (2) years of the date of application on the site.

  *The electrometric method may be found in "Methods of Soil Analysis, Agronomy Monograph No. 9.", C.A. Black, ed., American Society of Agronomy, Madison, Wisconsin, pp. 199-209, 1982, available from the American Society of Agronomy, Soil Science of America, Inc., 677 South Segoe Road, Madison, Wisconsin 53711. This method is also available for copying at the Indiana Department of Environmental Management, Office of Land Quality, 100 North Senate Avenue, Room N1154, Indianapolis, Indiana 46204. (Water Pollution Control Division; 327 IAC 6.1-4-6; filed May 15, 1998, 10:20 a.m.: 21 IR 3790; readopted filed Jan 10, 2001, 3:23 p.m.: 24 IR 1518; filed Jul 7, 2003, 4:25 p.m.: 26 IR 3607; errata filed Feb 6, 2006, 11:15 a.m.: 29 IR 1937; readopted filed Nov 21, 2007, 1:16 p.m.: 20071219-IR-327070553BFA; readopted filed Jul 29, 2013, 9:21 a.m.: 20130828-IR-327130176BFA)