Oklahoma Administrative Code › Title 35 - Oklahoma Department of Agriculture, Food, and Forestry › Chapter 17 - Water Quality › Subchapter 4 - Concentrated Animal Feeding Operations › Section 35:17-4-12 - Animal Waste Management Plans (AWMPs)

Current through Vol. 41, No. 20, July 1, 2024
(a) An AWMP or its equivalent shall be
				prepared, according to Departmental policy, for each facility prior to the
				submission of a CAFO license application. An AWMP or its equivalent may
				include, but is not limited to, a Comprehensive Nutrient Management Plan per
				NRCS guidance, or a Nutrient Management Plan per EPA guidance.
(b) The AWMP shall include:
(1) A plan with a proposed schedule for
				liquid and solid animal waste removal, including sludge.
(2) A date log indicating weekly inspection
				of wastewater level in the retention structure, including specific measurement
				of wastewater level. Facilities using pits, ponds, or other waste retention
				structures for storage and treatment of storm water, manure, and process
				generated wastewater, including flush water waste handling systems, shall
				maintain in their wastewater retention structure sufficient capacity to contain
				rainfall and rainfall runoff from a 25-year, 24-hour rainfall event. The owner
				shall immediately restore sufficient capacity to contain a 25-year, 24-hour
				rainfall event after any rainfall event or accumulation of wastes or process
				generated wastewater which reduces capacity, weather permitting. The 25-year,
				24-hour rainfall event capacity shall be in addition to the one (1) foot of
				freeboard required.
(3) All
				calculations and all factors and assumptions used in determining land
				application rates, acreage, and crops for both solid and liquid animal wastes.
				Land application rates shall take into account the plant available nutrient
				contribution of any land applied animal wastes. The following requirements
				shall apply to land application of animal waste on land owned or leased by the
				owner:
(A) Runoff from animal waste is
				prohibited where it results in a discharge to surface or groundwaters of the
				State. The owner shall provide controls for runoff and erosion as appropriate
				for site conditions.
(B) Animal
				wastes shall not be applied when the ground is frozen or saturated or during
				rainfall events.
(C) It shall be
				considered acceptable emergency procedures for a facility which has been
				properly designed, constructed, and operated and is in danger of an imminent
				overflow due to chronic or catastrophic rainfall to discharge wastewaters to
				land application sites for filtering prior to discharging to surface or
				groundwaters of the State.
(D) Land
				application practices shall be managed so as to reduce or minimize the
				following:
(i) Ponding or puddling of
				wastewater on the site.
(ii)
				Adverse conditions that invite pests including flies and rodents.
(E) Facilities including waste
				retention structures, waste storage sites, land application sites, ponds,
				pipes, ditches, pumps, and diversion and irrigation equipment shall be
				maintained to insure the ability to fully comply with the terms of these rules
				and the Pollution Prevention Plan.
(F) Adequate equipment and land application
				area shall be available for removal of waste and wastewater as required to
				maintain the proper operating volume of the retention structure. A list of
				proposed or actual equipment shall be included.
(G) Surface disposal of animal wastes in the
				100-year flood plain, as established by the Federal Emergency Management Agency
				(FEMA), or near water courses is prohibited unless protected from inundation
				and damage that may occur during that flood event by adequate berms or other
				structures. The land application of animal wastes at agronomic rates shall not
				be considered surface disposal and is not prohibited.
(H) Runoff from animal waste storage piles
				shall be retained on site.
(I)
				Accumulation of water in animal waste storage areas shall be avoided.
(J) Timing and rate of applications shall be
				in response to crop needs, assuming usual nutrient losses, expected
				precipitation, and soil conditions. Timing and rate of land application of
				animal waste shall be based on published materials approved by the
				Department.
(K) Land application
				shall not occur in areas defined as do not apply areas in the waste application
				criteria of the USDA NRCS Waste Utilization Standard Conservation Practice
				Standard 633 and Nutrient Management Conservation Practice Standard Code 590,
				ortheir current replacement.
(L)
				The AWMP shall identify areas which due to topography, activities, or other
				factors have a high potential for significant soil erosion. Where these areas
				have the potential to contribute pollutants to surface or groundwaters of the
				State, the Pollution Prevention Plan shall identify measures used to limit
				erosion and pollutant runoff. Land subject to excessive erosion shall be
				avoided.