Iowa Administrative Code › Agency 567 - Environmental Protection Commission › Title IV - Wastewater Treatment and Disposal › Chapter 65 - Animal Feeding Operations › Rule 567-65.100 - Minimum Manure Control Requirements

Current through Register Vol. 47, No. 3, July 24, 2024
Confinement feeding operations shall be constructed, managed
				  and maintained to meet the minimum manure control requirements stated in
				  subrules 65.100(1) to 65.100(6). A release shall be reported to the department
				  as provided in subrule 65.2(1). Dry manure stockpiling requirements are stated
				  in subrule 65.100(7). Dry bedded manure stockpiling requirements are stated in
				  subrule 65.100(8).
(1) The minimum
				level of manure control for a confinement feeding operation shall be the
				retention of all manure produced in the confinement enclosures between periods
				of manure application and as specified in this rule. In no case shall manure
				from a confinement feeding operation be discharged directly into a water of the
				state or into a tile line that discharges to waters of the state.
a. Control of manure from confinement feeding
				operations may be accomplished through use of manure storage structures or
				other manure control methods. Sufficient capacity shall be provided in the
				manure storage structure to store all manure between periods of manure
				application. A confinement feeding operation, other than a SAFO, that is
				constructed or expanded on or after July 1, 2009, shall not surface-apply
				liquid manure on frozen or snow-covered ground when there is an emergency, as
				described in subrule 65.101(4), unless the operation has a minimum of 180 days
				of manure storage capacity. Additional capacity shall be provided if
				precipitation, manure or wastes from other sources can enter the manure storage
				structure.
b. Manure shall be
				removed from the control facilities as necessary to prevent overflow or
				discharge of manure from the facilities. Manure stored in unformed manure
				storage structures or unformed egg washwater storage structures shall be
				removed from the structures as necessary to maintain a minimum of two feet of
				freeboard in the structure, unless a greater level of freeboard is required to
				maintain the structural integrity of the structure or prevent manure overflow.
				Manure stored in unroofed formed manure storage structures or formed egg
				washwater storage structures shall be removed from the structures as necessary
				to maintain a minimum of one foot of freeboard in the structure unless a
				greater level of freeboard is required to maintain the structural integrity of
				the structure or prevent manure overflow.
c. To ensure that adequate capacity exists in
				the manure storage structure to retain all manure produced during periods when
				manure application cannot be conducted (due to inclement weather conditions,
				lack of available land disposal areas, or other factors), the manure shall be
				removed from the manure storage structure as needed prior to these
				periods.
d. Dry manure or dry
				bedded manure originating at a confinement feeding operation may be retained as
				a stockpile so long as the stockpiled dry manure or dry bedded manure meets the
				following:
(1) Dry manure stockpiling
				requirements provided in subrule 65.100(7) or dry bedded manure stockpiling
				requirements provided in subrule 65.100(8).
(2) Applicable NPDES requirements pursuant to
				the Act.
(3) The dry manure or dry
				bedded manure is removed from the stockpile and applied in accordance with rule
				567-56.101(459,459B) within six months after the dry manure or dry bedded
				manure is first stockpiled.
(4) Dry
				manure stockpiles are not required to meet the requirements in subparagraphs
				65.100(1)
"d"
(1) to 65.100(1)
"d"
(3) above if
				the dry manure originates from a confinement feeding operation that was
				constructed prior to January 1, 2006, unless any of the following apply:
1. The confinement feeding operation is
				expanded after January 1, 2006.
2.
				Dry manure is stockpiled in violation of subrule 65.100(1).
3. Precipitation-induced runoff from the
				stockpile has drained off the property.