S.D. Admin. R. 12:44:05:07

Current through Register Vol. 51, page 34, September 9, 2024

Section 12:44:05:07 - Secondary containment

Secondary containment constructed after July 1, 1989, must be constructed according to professional engineering practices, which include the following:

(1) The walls and base must be constructed by means of one of the following:

(a) A synthetic liner at least 30 mils thick beneath 12 inches of compacted soil sufficient to withstand loading conditions and the discharge of maximum tank capacity considering the full hydrostatic head of the discharged liquid;

(b) Concrete, excluding bricks and unreinforced blocks, of sufficient thickness and strength to withstand loading conditions and the discharge of maximum tank capacity considering the full hydrostatic head of the discharged liquid; or

(c) Cross-linked polyolefin, which is crosslinkable high density polyethylene, Type 3, Class B, Category 5 resin with a minimum of 0.5 percent carbon black, as defined in American Society for Testing and Materials (ASTM) standard D 1248-84, constructed with a minimum thickness of 3/8 inch, ultraviolet stabilized for outdoor use to give excellent outdoor weatherability, and with a low temperature impact strength of a minimum of 90 foot pounds of impact at 40 degrees Fahrenheit according to the Association of Rotational Molders (ARM) impact test. The cross-linked polyolefin must be constructed of sufficient thickness and strength to withstand loading conditions and the discharge of maximum tank capacity considering the full hydrostatic head of discharged liquid;

(2) All seams and cracks must be sealed;

(3) The containment area must be capable of holding 125 percent of the volume of the largest container plus the volume of the butts of all the other tanks inside it;

(4) Each cross-linked polyolefin containment structure must be permanently marked with an embossment or with a metal certification plate permanently affixed to it. The marking must be in letters and numbers at least 1/4 inch high located on the side of the containment structure. The marking shall certify that the containment structure complies with all requirements of this section and must contain the words "meets specification of ARSD 12:44:05:07" and the date of manufacture, including month and year;

(5) Synthetic liners must have a minimum thickness of 30 mils and be chemically compatible with the materials being stored within the facility. A synthetic liner may not be used in construction of a bulk commercial fertilizer storage facility until the manufacturer of the liner provides the facility operator with a written confirmation of compatibility and a written estimate of the life of the liner. The synthetic liner must be protected by a 6-inch compacted clay soil layer below the liner and a 12-inch compacted soil layer above the liner. Both layers must be free of organic material which may decay, large rocks, angular stones, sticks, or other materials which may puncture the liner. Synthetic liners must be installed under the supervision of a representative of the manufacturer who is qualified to install the liner or under the supervision of a person who has received written certification from the liner manufacturer that he is qualified to install the liner. All seams constructed in the field must be tested and repaired in accordance with the manufacturer's recommendations; and

(6) Reinforced concrete block walls must be sealed with a water proof, water resistant material, compatible with the fertilizer products that will be stored within secondary containment, on the surface of the block facing the contained product.

S.D. Admin. R. 12:44:05:07

15 SDR 194, effective 7/1/1989.

General Authority: SDCL 38-19-36, 38-19-36.1, 38-19-36.2.

Law Implemented: SDCL 38-19-36, 38-19-36.1, 38-19-36.2.

ASTM Standard D 1248-84, "Standard Specification for Polyethylene Plastics Molding and Extrusion Materials," American Society for Testing Materials, January, 1985. Copies may be obtained from the American Society for Testing Materials, 1916 Race Street, Philadelphia, PA 19193; $6. Association of Rotational Molders Low Temperature Impact Test - T14, revised through January 1986. Copies may be obtained from Association of Rotational Molders, 435 North Michigan Avenue, Chicago, IL; $4.50.