NR 213.12(2)(b)3. 3. The permeability of at least 60% of the liner samples tested are equal to or less than the design permeability; and

NR 213.12(2)(b)4. 4. An individual sample does not have a permeability more than one order of magnitude greater than the design permeability.

NR 213.12(2)(c) (c) All test holes shall be backfilled using materials identical to the liner design materials and compacted.

NR 213.12(3) (3) Synthetic liners. Subsequent to installation of synthetic liners and prior to placement of the liner cover, all field constructed seams shall be tested in accordance with the manufacturer’s recommendations to insure the integrity of the liner. All faulty seams shall be repaired and retested until a proper seal is obtained.

NR 213.12 Note Note: Copies of ASTM D1587 may be inspected at the offices of the department, the secretary of state and the legislative reference bureau. Copies of ASTM standards may also be obtained from the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.

NR 213.12 History History: Cr. Register, July, 1984, No. 343, eff. 8-1-84; renum. from NR 213.09, Register, June, 1990, No. 414, eff. 7-1-90; am. (2) (a), Register, April, 1991, No. 424, eff. 5-1-91.

subch. III of ch. NR 213 Subchapter III — Design of Storage Structures

NR 213.13 NR 213.13 Requirements for sweet corn silage stacks of greater than 150 tons which do not exceed 1200 tons at any one time. Sweet corn silage stacks which do not exceed 1200 tons per site at any one time are not required to meet the specifications of s. NR 213.14 if subs. (1), (2) and (3) are met. This section does not apply to sweet corn silage stacks of less than 150 tons per site at any one time.

NR 213.13(1) (1) General site criteria. Sites used for stacking of sweet corn silage which do not exceed 1200 tons per site at any one time shall meet the following conditions:

NR 213.13(1)(a) (a) At least 50% of the natural soil in the upper 24 inches passes a No. 200 sieve.

NR 213.13(1)(b) (b) No greater than 5% by weight of the upper 24 inches of the natural soil is retained on a No. 4 sieve.

NR 213.13(1)(c) (c) The plasticity index of the natural soil is equal to or greater than 7.

NR 213.13(1)(d) (d) The stack is located at least 1000 feet from any well serving a community public water supply system and at least 250 feet from any other potable water supply well.

NR 213.13(1)(e) (e) The stack is located at least 500 feet from an inhabited dwelling except that this distance may be reduced with the written permission from the owner and occupants of the residence.

NR 213.13(1)(f) (f) The stack is located at least 5 vertical feet from the groundwater or bedrock.

NR 213.13(1)(g) (g) The base of the stack is located on a site that does not exceed 2% slope.

NR 213.13(1)(h) (h) The stack is located at least 200 feet from the nearest surface water.

NR 213.13(2) (2) Leachate management. Leachate from the stack shall be collected and landspread in a manner that prevents surface water and groundwater pollution.

NR 213.13(3) (3) Documentation of compliance. Documentation of compliance with subs. (1) and (2) shall be submitted to the department for review and acceptance prior to use of the site for stacking of sweet corn silage.

NR 213.13 History History: Cr. Register, June, 1990, No. 414, eff. 7-1-90.

NR 213.14 NR 213.14 Stack structures for by-product solids. This section shall be applicable to all by-product solids stacks except those stacks identified in s. NR 213.02 (2) (e) or those stacks which meet the requirements of s. NR 213.13.

NR 213.14(1) (1) General submittal requirements.

NR 213.14(1)(a) (a) An engineering report and plans and specifications shall be submitted to the department for approval in accordance with s. 281.41, Stats., prior to initiating construction.

NR 213.14 Note Note: The department recommends that whenever possible, a preliminary engineering report outlining the project and including any available information required under par. (b) be submitted prior to submittal of final plans.

NR 213.14(1)(b) (b) The engineering report shall outline the entire project and include, at a minimum, the following information: legal description of the site subgrade conditions, soil classification, percent soil passing a No. 200 sieve, soil plasticity index, depth to bedrock and to seasonal high groundwaters, waste sources, and waste volume and materials and specifications of the proposed structure.

NR 213.14(2) (2) General design and construction criteria.

NR 213.14(2)(a) (a) The base, walls and joints of the by-product solids stack structure shall be constructed for maximum containment of any leachate generated such that all leachate is conveyed to and stored in an approved leachate storage facility.

NR 213.14(2)(b) (b) The minimum slope for the base of the structure shall be 2%.

NR 213.14(2)(c) (c) Construction of bituminous concrete structures and concrete structures shall comply with the WDOT standards for road and bridge construction. Other materials for stack structures may be proposed in the plans and specifications submitted to the department. Approval of any material shall be based on the capability of the material to meet the purpose of this chapter.