Okla. Admin. Code § 252:515-43-2
The following words and terms, when used in this Subchapter, shall have the following meaning, unless the context clearly indicates otherwise.
"Additives" means any material that is mixed with or added to feedstocks and bulking agents to create a favorable condition for the composting process and includes urea, crushed egg shells, earthworms, and bacterial or fungal inoculum.
"Aerated static pile composting" means a process in which decomposing organic material is placed in piles over an air supply system that can be used to supply oxygen and control temperature for the purpose of producing compost.
"Agricultural residuals" means materials generated by the customary and generally accepted activities, practices, and procedures that farmers engage in during:
(A) the production and preparation for market of poultry, livestock and associated farm products;
(B) the production and harvesting of agricultural crops which include agronomic, horticultural, and silvicultural crops; and
(C) the production and cultivation of freshwater and saltwater populations in the aqua cultural industry. Agricultural residuals do not include manures managed as part of a Concentrated Animal Feeding Operation (CAFO) license
"Biofilter" means a material consisting of bulking agents, shredded yard waste, or compost that is applied over the composting mixture to control odors, dust, or vectors.
"Biosolids" means primarily organically treated wastewater materials from municipal wastewater treatment plants that are suitable for recycling as amendments. This term is within the meaning "sludge" referenced in 27A O.S. § 2-6-101(7). Biosolids are divided into the following classes:
(A) Class A Biosolid meets the pathogen reduction requirements of 40 CFR § 503.32(a);
(B) Class B Biosolid meets the pathogen reduction requirements of 40 CFR § 503.32(b).
"Bulking agents" means a material added to the composting process to provide structural support, improve aeration, or absorb moisture and includes wood chips, straw, clean untreated wood, shredded newspaper, shredded cardboard, sawdust, shredded brush, and compostable containers.
"Commercial composting facility" means the definition found at 27A O.S. § 2-10-103.
"Composting pad" means the ground on which composting activities take place. This may be subdivided by function, such as "mixing pad", "composting pad", "curing pad" or "storage pad". An "all weather composting pad" is one of sufficient construction, firmness and grading so that composting equipment can manage the process during normal inclement weather, including expected rain, snow and freezing temperatures.
"Contact water" means water that has come in contact with raw feedstocks or active composting piles. It does not include water from curing piles, finished compost, or product storage piles.
"Curing" means a continuation of the composting process after the high heat stage during which stability and maturity continues to increase. Compost enters the curing stage after completing the high heat stage to further reduce pathogens and the requirements for vector attraction reduction.
"Feedstock" means material to be converted under thermophilic conditions to a product with a high humus content classified into different types for purposes of regulation under this Subchapter.
"Food processing residuals" means organic materials generated as a by-product of the industrial food processing sector that are non-toxic, non-hazardous, and contain no sanitary wastewater. The term does not include fats, oil, grease and Dissolved Air Flotation (DAF) skimmings.
"Food residuals" means pre- and post-consumer food discards from households and the commercial/institutional sector including but not limited to vegetables, fruits, grains, dairy products, meats, and compostable foodservice ware/packaging that may be comingled.
"Household or backyard composting" means any person composting household waste that is located and utilized exclusively on the owner's property.
"Industrial by-product" means organic materials generated by manufacturing or industrial processes that are non-toxic, non-hazardous, contain no domestic wastewater, and pass the PFLT.
"In-vessel composting" means process in which decomposing organic material is enclosed in a drum, silo, bin, tunnel, or other container for the purpose of producing compost; and in which temperature, moisture and air-borne emissions are controlled, vectors are excluded and nuisance and odor generation minimized.
"Neighborhood composting" means any person, group of persons or geographically localized community within a town, city or incorporated area composting feedstock that is composted and utilized exclusively on property owned by the neighborhood or members of the neighborhood.
"Nurseries, greenhouses, and garden stores composting" means any private or commercial nursery, greenhouse, or garden store composting feedstock that is located and utilized exclusively on property owned by the facility.
"Source separated organics" means organic material that has been separated from non-compostable material at the point of generation, including but not limited to yard trimmings, food residuals, vegetative materials, woody materials, and compostable products.
"Vermicomposting" means the controlled and managed process by which live worms convert organic materials into dark, fertile, granular excrement or casting.
"Windrow composting" means the processes in which decomposing organic materials are placed in long piles for the purpose of producing compost. The piles are periodically turned or agitated to assure all parts of the decomposing material reach the desired stability.
"Woody materials" means the residuals and by-products of cutting trees, including but not limited to tree stumps, sawdust, pallets, and dimensional lumber that has not been treated chemically or with adhesives and coatings such as paint, glue, or any other visible contaminant.
"Yard trimmings" means leaves, grass clippings, brush, garden materials, tree trunks, tree stumps, holiday trees, and cuttings from trees or shrubs. Can also include vegetative materials resulting from the use of commercial products, including but not limited to discarded flowers, potted flowers, or grave blankets that do not include plastic, metal, polystyrene foam, or other non-biodegradable materials.
Okla. Admin. Code § 252:515-43-2