Idaho Administrative Code
Title IDAPA 02 - Agriculture, Department of
Rule 02.04.14 - RULES GOVERNING DAIRY BYPRODUCT
Section 02.04.14.030 - DAIRY ENVIRONMENTAL MANAGEMENT PLAN APPROVAL

Universal Citation: ID Admin Code 02.04.14.030

Current through August 31, 2023

01. Dairy Storage and Containment Facility Criteria. (3-31-22)

a. Dairy storage and containment facilities shall be constructed to meet a minimum of one hundred eighty (180) days of holding capacity. Process water containment structures that are utilized as the secondary or final storage for effluent shall have a minimum two (2) vertical feet of freeboard. Process water and containment structures that are not the secondary or final storage for effluent shall have a minimum one (1) vertical feet of freeboard. (3-31-22)

b. Earthen dairy storage and containment facilities less than ten (10) vertical feet high with a maximum high water line of eight (8) vertical feet shall have a top embankment width of at least eight (8) feet. The combined embankment slopes must be at least five (5) horizontal to one (1) vertical, and shall not exceed two (2) horizontal to one (1) vertical slope. Earthen dairy storage and containment facilities greater than ten (10) vertical feet from the naturally occurring ground level shall meet the NRCS Idaho Conservation Practice Standard Waste Storage Facility Code 313 December 2004 embankment requirements. (3-31-22)

c. The inside bottom of the dairy storage and containment facility shall be a minimum of two (2) feet above the high water table, bed rock, gravel, or permeable soils. For an earthen dairy storage and containment facility, a soil liner shall be installed such that the specific discharge rate of the containment structure meet 1 x 10-6 cm3/cm2/ sec or less. Concrete or synthetic liners must be constructed to ASAE and Appendix 10D specifications. (3-31-22)

d. Storage areas for dairy byproduct, including compost and solid manure storage areas, shall be appropriately protected to prevent run on, run off, and contamination of ground and surface water. (3-31-22)

e. Dairy environmental management systems shall be maintained in a condition that allows the producer to regularly inspect the integrity of the systems. (3-31-22)

02. Dairy Nutrient Management Plan (DNMP). Each dairy farm shall have a dairy nutrient management plan that is approved by the Department. The DNMP shall cover the dairy farm site and other land owned and operated by the dairy farm owner or operator to which dairy byproducts are land applied. Requirements to comply with the provisions of a DNMP include the following: (3-31-22)

a. Producer annual soil tests shall be conducted as set forth in IDAPA 02.04.30, "Rules Governing Environmental and Nutrient Management," and tested by an approved laboratory. (3-31-22)

b. Regulatory soil tests will be conducted at frequencies sufficient to provide assurance of compliance with Section 031 and with IDAPA 02.04.30, "Rules Governing Environmental and Nutrient Management." (3-31-22)

c. Accurate DNMP records shall be maintained. These records shall include at a minimum: (3-31-22)
i. Annual soil analysis; (3-31-22)

ii. Date and amount of dairy byproduct and commercial fertilizer applied to individual dairy owned or operated fields; (3-31-22)

iii. Date(s) of exported dairy byproduct, number of acres applied, amount of dairy byproduct exported, and to whom dairy byproduct was exported; and (3-31-22)

iv. Actual crop yields on dairy owned or operated fields. (3-31-22)

v. A nitrogen management plan worksheet shall be completed for all fields and pastures receiving land application of nutrients. (3-31-22)

d. Pasturing. All pastures utilized for grazing of dairy animals, and other animals grazing within the same pasture, shall be incorporated in to the DNMP and subject to the following requirements: (3-31-22)
i. Soil testing pursuant to the NMS and this section. (3-31-22)

ii. Surface water access. If pastured animals have access to surface water within a pasture, the producer may be required to implement one (1) or more NRCS conservation practice standards to minimize adverse impact on surface water quality. (3-31-22)

iii. Land application. If land application occurs within a pasture, annual soil tests shall be conducted. (3-31-22)

iv. Confinement areas. Confinement areas shall not be considered part of a pasture. (3-31-22)

e. IPDES Permits. Dairy farms governed by the IPDES program are not required to submit a DNMP to the Department. (3-31-22)

Disclaimer: These regulations may not be the most recent version. Idaho may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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