2-3305. Functional anti-pollution devices, requirements.
2-3305
2-3305. Functional anti-pollution devices, requirements.
Functional anti-pollution devices shall be used in the chemigation
process according to:
(a) Criteria adopted by the secretary by rules and regulations that, in the
secretary's discretion,
follow the latest scientific knowledge and technology and that is designed to
protect the groundwater and surface water of the state; or
(b) the following criteria:
(1) Waterline check valve shall be an automatic, quick-closing
device
capable of preventing the backflow of water chemical mixtures into the source
of water supply during times of system failure or equipment shutdown;
(2) a chemical injection line check valve shall be used to
prevent flow of
water from the irrigation system into the chemical supply tank and to
prevent gravity flow from the chemical supply tank into the irrigation system;
(3) an interlock system shall be used between the power system
of the
injection
unit, the irrigation pumping plant and the pivot, if involved; the interlock
shall function so that if the irrigation pump stops, the
injection pump will also stop;
(4) a functional vacuum relief device shall be used
between the waterline check valve and the irrigation pump to reduce the
chance of chemical being back-siphoned into the water source; and
(5) an automatic low pressure drain shall be used between the
waterline
valve
and the irrigation pump.
History: L. 1985, ch. 5, § 5;
L. 1989, ch. 7, § 3;
L. 1998, ch. 143, § 25; May 7.