1. The department shall adopt rules governing the application of manure originating from an anaerobic lagoon or aerobic structure which is part of a confinement feeding operation. The rules shall establish application rates and practices to minimize groundwater or surface water pollution resulting from application, including pollution caused by runoff or other manure flow resulting from precipitation events. The rules shall establish different application rates and practices based on the water holding capacity of the soil at the time of application.

Terms Used In Iowa Code 459.313

  • Aerobic structure: means an animal feeding operation structure other than an egg washwater storage structure which employs bacterial action which is maintained by the utilization of air or oxygen and which includes aeration equipment. See Iowa Code 459.102
  • Anaerobic lagoon: means an unformed manure storage structure, if the primary function of the structure is to store and stabilize manure, the structure is designed to receive manure on a regular basis, and the structure's design waste loading rates provide that the predominant biological activity is anaerobic. See Iowa Code 459.102
  • Confinement feeding operation: means an animal feeding operation in which animals are confined to areas which are totally roofed. See Iowa Code 459.102
  • Department: means the department of natural resources created pursuant to section 455A. See Iowa Code 459.102
  • Manure: means animal excreta or other commonly associated wastes of animals, including but not limited to bedding, litter, or feed losses. See Iowa Code 459.102
  • Person: means an individual, partnership, firm, corporation, or association. See Iowa Code 462A.2
  • Restricted spray irrigation equipment: means spray irrigation equipment which disperses manure through an orifice at a maximum pressure of eighty pounds per square inch or more. See Iowa Code 459.102
  • Spray irrigation equipment: means mechanical equipment used for the aerial application of manure, if the equipment receives manure from a manure storage structure during application via a pipe or hose connected to the structure, and includes a type of equipment customarily used for the aerial application of water to aid the growing of general farm crops. See Iowa Code 459.102
  • Use: means to operate, navigate, or employ a vessel. See Iowa Code 462A.2
 2. A person shall not apply manure by spray irrigation equipment, except as provided by rules adopted by the department pursuant to chapter 17A. However, a person shall not use restricted spray irrigation equipment to apply manure originating from a confinement feeding operation, unless the manure has been diluted as provided by rules adopted by the department, including diluted by use of an anaerobic lagoon.
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