327 IAC 19-12-5 Design requirements for liners

Sec. 5. (a) The soil or foundation of a manure storage pond or manure treatment lagoon must have a maximum specific discharge of 1/16 in3/in2/day (1.8×10-6cm3/cm2/sec). This requirement may be satisfied by soil testing that shows a minimum of three (3) feet of in situ soils that meet the maximum specific discharge criteria. The soil must be over-excavated a minimum of six (6) inches and recompacted to break up the existing macropore structure. (b) If there is not at least three (3) feet of in situ soils that meet the maximum specific discharge criteria in subsection (a), a liner must be used. Except for clay liners described in subsection (c), liners used in manure storage facilities must meet any of the following design standards: (1) Indiana NRCS Conservation Practice Standard Code 520: Pond Sealing or Lining-Compacted Soil Treatment, October 2016*. (2) Indiana NRCS Conservation Practice Standard Code 521A: Pond Sealing or Lining, Flexible Membrane, October 2013*. (3) Indiana NRCS Conservation Practice Standard Code 522: Pond Sealing or Lining-Concrete October 2016. (c) Clay liners must be a minimum of one (1) foot thick and have a maximum specific discharge of 1/16 in3/in2/day (1.8×10-6cm3/cm2/sec). *These documents are incorporated by reference. Copies may be obtained from the Indiana NRCS State Office, 6013 Lakeside Boulevard, Indianapolis, IN 46278, online at http://www.nrcs.usda.gov/, or are available for review at the Indiana Department of Environmental Management, Office of Legal Counsel, Indiana Government Center North, Thirteenth Floor, 100 North Senate Avenue, Indianapolis, IN 46204.