Wis. Admin. Code Department of Natural Resources NR 213.12

Current through October 28, 2024

Section NR 213.12 - Quality assurance and testing requirements

(1) GENERAL.

(a) All liners shall be tested before the lagoons are put into operation to ensure that all performance standards and design specifications as approved have been met. A post-construction report shall be submitted to the department for approval prior to discharging any wastes into the lagoons. The report shall include: all material test results required under sub. (2) or (3); plan sheets illustrating final elevations, slopes and test locations; a discussion of weather conditions and any unexpected conditions encountered during construction.

(b) Testing shall be performed in accordance with sub. (2) or (3), or any other method approved by the department.

(c) All tests shall be performed under the direct supervision of the design engineer except for tests on synthetic or soil-bentonite liners, which shall be performed under the direct supervision of a representative of the manufacturer unless otherwise specified by the department in the plan approval.

(2) SOIL OR SOIL-BENTONITE LINERS.

(a) Following completion of construction and prior to being put into use, core samples of soil or soil-bentonite liners shall be taken in accordance with ASTM D1587 (1983). A minimum of 5 samples per acre of liner surface shall be taken. The samples shall be split proportionately between the wetted areas of the bottom and interior walls of the dikes relative to the total area of each and spaced to provide representative samples of the liner. For lagoons less than one acre in size, a minimum of 5 samples shall be taken.

(b) The core samples shall be tested by a soil testing laboratory or engineering firm for the following parameters: dry unit weight density, moisture content, degree of compaction, liner thickness, particle size distribution and Atterberg limits. Additionally, permeability tests shall be performed on a minimum of 3 of every 5 core samples. The design standards for liner thickness and permeability shall be considered met if:

1. The average thickness of soil or soil-bentonite liners and cover samples, analyzed separately, are equal to or greater than the specified design thickness; and

2. An individual sample does not have a thickness which is less than the design thickness by more than 0.1 foot; and

3. The permeability of at least 60% of the liner samples tested are equal to or less than the design permeability; and

4. An individual sample does not have a permeability more than one order of magnitude greater than the design permeability.

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

(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.

Wis. Admin. Code Department of Natural Resources NR 213.12

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.

Copies of ASTM D1587 may be inspected at the offices of the department, the secretary of state and the revisor of statutes. Copies of ASTM standards may also be obtained from the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.