Current through August 26, 2024
Except as provided in sub. (8) or (9), a mixing and
loading pad used for liquid fertilizer or pesticide shall comply with all of
the following:
(1) PUMP CONTAINMENT. A
mixing and loading pad shall extend beneath any pump that the operator uses to
transfer liquid fertilizer or pesticide, unless the pump is located within a
secondary containment structure that complies with s.
ATCP 33.42.
(2)
APPURTENANCE CONTAINMENT. A mixing and loading pad shall extend beneath any
appurtenance or plumbing connection through which the operator transfers liquid
fertilizer or pesticide, unless one of the following applies:
(a) The appurtenance or connection is located
within a secondary containment structure that complies with s.
ATCP 33.42.
(b)
The appurtenance or connection is threaded, welded or permanently
band-clamped.
(3)
DESIGN, CONSTRUCTION AND MAINTENANCE; GENERAL. A mixing and loading pad shall
comply with all of the following requirements:
(a) It shall be liquid-tight.
(b) It shall have the capacity required in
sub. (4).
(c) It shall be
constructed of materials specified in sub. (5).
(d) It shall be served by a pump and storage
container that comply with s.
ATCP 33.50.
(e)
If it drains to a sump, the sump shall comply with s.
ATCP 33.36.
(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.
(g) It shall be
protected against precipitation runoff from surrounding surfaces.
(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.
(i) It shall be inspected and maintained as
provided in subs. (6) and (7).
(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.
(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).
Note: 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:
Department of Agriculture, Trade and Consumer
Protection
Agricultural Resource Management Division
P.O. Box 8911
Madison, WI 53708-8911
Phone: (608) 224-4500
Web:
http://https://datcp.wi.gov/Pages/Homepage.aspx
(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.
Note: The department recommends that
construction inspection be performed by a qualified person experienced in
reading plans and inspecting construction.
(7) INSPECTION AND MAINTENANCE.
(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.
(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.
(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.
(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:
(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.
(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.
(c) All of the following are located over one
or more spill containment basins that comply with par. (d):
1. The rail car outlet valve.
2. The pump.
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.
(d) Every
containment basin under par. (c) is liquid-tight, and is constructed of durable
rigid material that is chemically compatible with any liquid that may be
discharged to it. The basin shall have a capacity of at least 75 gallons, or a
capacity at least equal to the capacity of the appurtenances that may discharge
to it, whichever is greater. A containment basin may be permanent or portable.
The operator shall routinely inspect and maintain the basin to ensure
compliance with this paragraph.
(e)
If the operator pumps the fertilizer or pesticide from the rail car to another
mobile container, the other mobile container is parked on a mixing and loading
pad that complies with this section.
(9) LOADING LIQUID BULK PESTICIDE INTO
ANHYDROUS AMMONIA NURSE TANK. Section
ATCP 33.30 and subs. (1) through (7) do not apply to the
loading of liquid bulk pesticide into an anhydrous ammonia nurse tank if all of
the following apply:
(a) The operator loads
the bulk pesticide from a storage container that is located over a mixing and
loading pad that complies with this section, or over a secondary containment
structure that complies with s.
ATCP 33.42.
(b)
The operator uses a positive displacement pump to transfer the pesticide to the
anhydrous ammonia nurse tank. The pump shall be located over a mixing and
loading pad that complies with this section, or over a secondary containment
structure that complies with s.
ATCP 33.42. The pump shall be rated to deliver no more than
3 gallons per minute at a pressure of no more than 250 psi. The pump shall be
equipped for manual shutdown, in addition to automatic shutdown under par. (c)
2.
(c) The pump under par. (b) is
equipped with electronic controls that do all of the following:
1. Prevent pump operation until the operator
manually pre-sets the pumping volume and engages a separate manual starter
switch.
2. Automatically stop the
pump when the pre-set volume has been pumped.
(d) The hose from the pump to the anhydrous
ammonia nurse tank meets all of the following requirements:
1. It is no longer than 12 feet and has an
inside diameter of not more than 1/2 inch.
2. It has a rated operating pressure of at
least 1,200 psi with a burst strength of at least 5,000 psi.
3. It has a check valve near its nurse tank
end, and a manually operated valve and coupling to connect it to the nurse
tank.
(e) The operator
tests the connection between the hose and nurse tank before loading pesticide
into the nurse tank, to ensure that the connection does not leak.
The most common pesticide products loaded into anhydrous
ammonia are nitrapyrin based products.
