OAR 340-096-0070: Special Rules Pertaining to Composting: Performance Standards

(1) All composting facilities must be designed, constructed, and operated in a manner that does not cause a discharge of leachate, liquid digestate, or stormwater from the facility to surface water, except when such discharge is in compliance with a discharge permit issued by the department. (2) All composting facilities that collect and dispose of leachate, liquid digestate, or stormwater in engineered structures must comply with the applicable requirements of OAR 340-096-0130: Special Rules Pertaining to Composting: Biogas, Liquid Digestate and Leachate Collection Design and Management Requirements. (3) All composting facilities must be designed, constructed, and operated in a manner that does not cause a likely adverse impact to groundwater under OAR 340 Division 40. All composting facilities proposing to use infiltration in soil as a method for managing leachate, liquid digestate, or stormwater must comply with OAR 340-096-0120: Groundwater Protection. (4) All composting facilities must be designed, constructed, and operated in a manner that, to the greatest extent practicable, consistent with proper facility design and operation, controls and minimizes odors that are likely to cause adverse impacts outside the boundaries of the facility. (5) All composting facilities must be designed, constructed, and operated in a manner that achieves human pathogen reduction as required by OAR 340-096-0140: Pathogen Reduction. (6) All composting facilities must be designed, constructed, and operated in a manner that controls or prevents propagation, harborage, or attraction of vectors, including but not limited to rats, birds, and flies. (7) All composting facilities that produce, collect or store biogas must be designed, constructed, and operated to meet state and local fire regulations to address the potential for fire and explosions. (8) All composting facilities that collect, store and manage liquid digestate must demonstrate adequate capacity to store or remove the digestate. For facilities that land apply, storage must be provided for periods when the production of liquid digestate exceeds the capacity of the soil to use the digestate at agronomic rates including during wet winter months. (9) All composting facilities must comply with all other applicable laws and regulations.