In addition to the definitions found in RCW 16.36.005, the following definitions apply to this chapter:

"Burial" means placing a carcass below the natural surface of the ground and completely covering it with soil.

"Carcass" means the body or tissues of a livestock animal that has died or has been killed other than by slaughter for human or animal consumption or commercial use.

"Composting" means the aerobic decomposition of organic matter under controlled conditions.

"Death from disease" means livestock that has died from a disease or an unknown cause.

"Emergency disposal" means disposal of carcasses ordered depopulated by the director or depopulated as a result of a reportable disease listed in WAC 16-70-010.

"Incineration" means the controlled and monitored combustion of carcasses for the purposes of volume reduction and pathogen control as approved by the department of ecology or local air pollution control authorities.

"Landfill" means a permitted facility, whether on-site or off-site, where solid waste is permanently placed in or on land, in accordance with chapter 70.95 RCW and chapters 173-350 and 173-351 WAC.

"Livestock" means horses, mules, donkeys, cattle, bison, sheep, goats, swine, rabbits, llamas, alpacas, ratites, poultry, waterfowl, game birds, and other species so designated by statute. This term does not include free ranging wildlife as defined in Title 77 RCW.

"Natural decomposition" means decomposition of carcasses through natural decay processes on the surface of the ground without cover material.

"Open burning" means the act of consuming or destroying a carcass by fire with or without the use of an accelerant.

"Rangeland" means a large open area for grazing of livestock in excess of one hundred sixty acres of contiguous usable grazing or timberland.

"Rendering" means the practice of using heat to convert dead animal carcasses and animal by-products into marketable products, such as meat and bone meal for animal feed, human food additives, or cosmetics.

"Routine disposal" means the disposal of the carcass of a livestock animal that died in the normal course of business. Routine disposal does not include carcasses of livestock ordered depopulated by the director or depopulated as a result of a reportable disease listed in WAC 16-70-010.