ATCP 33.32(3)(f)(f) It shall be designed, constructed and maintained to withstand all foreseeable load conditions, including the filled weight of all vehicles, storage containers, appurtenances, pumps and equipment that may be used or located within it.

ATCP 33.32(3)(h)(h) It may not have any precipitation drain through which spilled fertilizer or pesticide could be discharged. Any precipitation drain that exists on November 1, 2006 shall be permanently sealed within 6 months after that date.

ATCP 33.32(4)(4) Capacity. The capacity of a mixing and loading pad under this section, including the capacity of any sump to which the mixing and loading pad drains, shall be at least 1,000 gallons or 125 percent of the capacity of the largest storage container loaded or unloaded at the storage facility, whichever is less. This subsection does not apply to a mixing and loading pad that was in use prior to November 1, 2006 and complies with capacity requirements that were in effect at that time, unless the operator substantially alters the mixing and loading pad.

ATCP 33.32(5)(5) Construction materials. A mixing and loading pad shall be constructed of portland cement concrete. A portland cement concrete mixing and loading pad constructed on or after November 1, 2006 shall meet the standards specified in chapters 5 and 6 of the Wisconsin Minimum Design and Construction Standards for Concrete Mixing and Loading Pads and Secondary Containment Structures (February 2005).

ATCP 33.32 NoteNote: The Wisconsin Minimum Design and Construction Standards for Concrete Mixing and Loading Pads and Secondary Containment Structures (February 2005) were written by Professor David W. Kammel of the department of biological systems engineering, University of Wisconsin-Extension. Copies are on file with the department and the legislative reference bureau. Copies are available from the department, at no charge, at the following address:

ATCP 33.32(6)(6) Construction inspection. If a concrete mixing and loading pad is constructed on or after November 1, 2006, the operator or a person chosen by the operator shall inspect the construction for conformity to the design specifications filed with the department under s. ATCP 33.10 (1). The person conducting the inspection shall inspect and approve the construction of the soil sub-base, the laying of structural steel, and the laying of waterstop materials and devices before concrete is poured. The operator shall provide a copy of the inspection report and approval to the department.

ATCP 33.32 NoteNote: The department recommends that construction inspection be performed by a qualified person experienced in reading plans and inspecting construction.

ATCP 33.32(7)(7) Inspection and maintenance.

ATCP 33.32(7)(a)(a) An operator shall inspect a mixing and loading pad at least semi-annually, and shall maintain the mixing and loading pad as necessary, to ensure compliance with this section.

ATCP 33.32(7)(b)(b) Whenever an operator repairs a mixing and loading pad, the operator shall make the repair according to good engineering practice and manufacturer specifications, using materials approved by the department.

ATCP 33.32(7)(c)(c) An operator shall remove a mixing and loading pad if the operator cannot maintain it in compliance with this section, or if corrective action is needed to remove contamination from beneath the pad. An operator shall remove a leaking mixing and loading pad unless the pad is repaired and remains liquid-tight for at least 2 years after the date of repair.

ATCP 33.32(8)(8) Pumping liquid products from rail cars. Section ATCP 33.30 and subs. (1) through (7) do not apply to the pumping of liquid bulk fertilizer or liquid bulk pesticide from a rail car to a storage container, provided that all of the following apply:

ATCP 33.32(8)(a)(a) The hose or pipeline from the rail car outlet valve to the pump is equipped with a shut-off valve, unless the pump can draw from no other hose or pipeline.

ATCP 33.32(8)(b)(b) The hose or pipeline from the pump to the storage container is equipped with an automatic check valve to prevent back flow. The check valve shall be located as close to the pump effluent port as possible, consistent with good engineering practice.

ATCP 33.32(8)(c)(c) All of the following are located over one or more spill containment basins that comply with par. (d):

ATCP 33.32(8)(c)3.3. Every valve or plumbing connection that is located between the rail car outlet valve and the storage container, unless the valve or plumbing connection is threaded, welded, fused or permanently band-clamped.