Section 327IAC20-5-2. Design requirements

   (a) A SMSS must be designed as follows:

(1) The bottom of the SMSS is at least two (2) feet above bedrock.

(2) The bottom of the SMSS must be above the seasonal high water table, unless lowered in accordance with subsection (c).

(3) Test holes to obtain soil and water table information for the design must be obtained as follows:

(A) The number of test holes must be sufficient to adequately characterize the seasonal water table and soil underneath the SMSS.

(B) Test holes must be:

(i) evenly distributed throughout the SMSS;

(ii) at least two (2) feet below the base of the SMSS for concrete structures in karst and non-karst areas;

(iii) at least five (5) feet below the base of the SMSS for earthen structures in non-karst areas; and

(iv) placed in accordance with section 1(b)(3) of this rule in areas of karst terrain.

(C) Testing shall be conducted by:

(i) a soil scientist registered under the Indiana board of registration for soil scientists;

(ii) a professional geologist certified in Indiana under IC 25-17.6; or

(iii) a professional engineer registered in Indiana.

  (b) Plastic, fiberglass, and aboveground steel tanks must:

(1) have sufficient strength to withstand design loads;

(2) be watertight;

(3) be cleaned to remove any traces of previously stored substances prior to addition of manure to the tank if the tank is used to store any objectionable or hazardous substances;

(4) be installed to ensure the seasonal high water table is maintained below the tank or the tank must be anchored to prevent flotation; and

(5) have protected shut-off valves for all inlet and outlet pipes.

  (c) Any drainage system to lower the seasonal water table around the base of a SMSS must be designed and installed to:

(1) effectively collect and drain the ground water;

(2) be of adequate size, proper slopes, and proper distance from the SMSS;

(3) if applicable, be provided with:

(A) sumps;

(B) pumps, including a backup pump; and

(C) electricity supply;

(4) if applicable, have a surface outlet that is at least fifty (50) feet away from the SMSS, and at least:

(A) fifty (50) feet from the property line in soils with a permeability of one-half (1/2) inch per hour or less; or

(B) twenty (20) feet from the property line in soils with a permeability greater than one-half (1/2) inch per hour;

(5) have a shut-off valve or equivalent; and

(6) have an access point for sampling within fifty (50) feet of the SMSS.

  (d) A concrete SMSS must be constructed according to the Indiana NRCS Construction Specification, Concrete Construction, October 2005* and designed to either of the following design standards:

(1) MWPS-36: Rectangular Concrete Manure Storages, Second Edition, 2005**.

(2) TR-9: Circular Concrete Manure Tanks, March 1998**.

  (e) A SMSS must not:

(1) have a discharge pipe or conveyance that would allow for a release or discharge of manure or water contaminated by manure; or

(2) be an underground steel storage tank.

  *This document is incorporated by reference. Copies may be obtained from the Indiana NRCS State Office, 6013 Lakeside Boulevard, Indianapolis, IN 46278 or are available for review and copying at the Indiana Department of Environmental Management, Office of Legal Counsel, Indiana Government Center North, Thirteenth Floor, 100 North Senate Avenue, Indianapolis, Indiana 46204.

  **These documents are incorporated by reference. Copies may be obtained from the MidWest Plan Service, 122 Davidson Hall, Iowa State University, Ames, Iowa 50011-3080 or are available for review and copying at the Indiana Department of Environmental Management, Office of Legal Counsel, Indiana Government Center North, Thirteenth Floor, 100 North Senate Avenue, Indianapolis, Indiana 46204. (Water Pollution Control Division; 327 IAC 20-5-2; filed Sep 28, 2015, 11:13 a.m.: 20151028-IR-327130245FRA)