| (29) Modular starved-air municipal waste combustion unit--A municipal waste combustion unit that combusts municipal solid waste, is not field-erected, and has multiple combustion chambers in which the primary combustion chamber is designed to operate at substoichiometric conditions. (30) Municipal solid waste or municipal-type solid waste--Household, commercial/retail, or institutional waste. Household waste includes material discarded by residential dwellings, hotels, motels, and other similar permanent or temporary housing. Commercial/retail waste includes material discarded by stores, offices, restaurants, warehouses, nonmanufacturing activities at industrial facilities, and other similar establishments or facilities. Institutional waste includes materials discarded by schools, by hospitals (nonmedical), by nonmanufacturing activities at prisons and government facilities, and other similar establishments or facilities. Household, commercial/retail, and institutional waste does include yard waste and refuse-derived fuel. Household, commercial/retail, and institutional waste does not include used oil; sewage sludge; wood pallets; construction, renovation, and demolition wastes (which include railroad ties and telephone poles); clean wood; industrial process or manufacturing wastes; medical waste; or motor vehicles (including motor vehicle parts or vehicle fluff). (31) Municipal waste combustion plant--One or more municipal waste combustion units -at the same location as specified under Applicability of State Plans (40 Code of Federal Regulations §60.1550(a)). (32) Municipal waste combustion plant capacity--The aggregate municipal waste combustion capacity of all municipal waste combustion units at the plant that are not subject to 40 Code of Federal Regulations Part 60, Subparts Ea, Eb, or AAAA. (33) Municipal waste combustion unit--Any setting or equipment that combusts solid, liquid, or gasified municipal solid waste including, but not limited to, field-erected combustion units (with or without heat recovery), modular combustion units (starved-air or excess-air), boilers (for example, steam generating units), furnaces (whether suspension-fired, grate-fired, mass-fired, air curtain incinerators, or fluidized bed-fired), and pyrolysis/combustion units. Two criteria further define municipal waste combustion units: (A) Municipal waste combustion units do not include pyrolysis or combustion units located at a plastics or rubber recycling unit as specified under Applicability of State Plans (40 Code of Federal Regulations §60.1555(h) and (i)). Municipal waste combustion units do not include cement kilns that combust municipal solid waste. Municipal waste combustion units also do not include internal combustion engines, gas turbines, or other combustion devices that combust landfill gases collected by landfill gas collection systems. (B) The boundaries of a municipal waste combustion unit are defined as follows. The municipal waste combustion unit includes, but is not limited to, the municipal solid waste fuel feed system, grate system, flue gas system, bottom ash system, and the combustion unit water system. The municipal waste combustion unit does not include air pollution control equipment, the stack, water treatment equipment, or the turbine-generator set. The municipal waste combustion unit boundary starts at the municipal solid waste pit or hopper and extends through three areas. (i) The combustion unit flue gas system, which ends immediately after the heat recovery equipment or, if there is no heat recovery equipment, immediately after the combustion chamber. (ii) The combustion unit bottom ash system, which ends at the truck loading station or similar equipment that transfers the ash to final disposal. It includes all ash handling systems connected to the bottom ash handling system. (iii) The combustion unit water system, which starts at the feed water pump and ends at the piping that exits the steam drum or superheater. (34) Particulate matter--Total particulate matter emitted from municipal waste combustion units as measured using United States Environmental Protection Agency Reference Method 5 in 40 Code of Federal Regulations Part 60, Appendix A and the procedures specified in §113.2142 of this title (relating to What test methods must I use to stack test?). (35) Plastics or rubber recycling unit--An integrated processing unit for which plastics, rubber, or rubber tires are the only feed materials (incidental contaminants may be in the feed materials). The feed materials are processed and marketed to become input feed stock for chemical plants or petroleum refineries. The following three criteria further define a plastics or rubber recycling unit: (A) Each calendar quarter, the combined weight of the feed stock that a plastics or rubber recycling unit produces must be more than 70 percent of the combined weight of the plastics, rubber, and rubber tires that recycling unit processes. (B) The plastics, rubber, or rubber tires fed to the recycling unit may originate from separating or diverting plastics, rubber, or rubber tires from municipal or industrial solid waste. The feed materials may include manufacturing scraps, trimmings, and off-specification plastics, rubber, and rubber tire discards. (C) The plastics, rubber, and rubber tires fed to the recycling unit may contain incidental contaminants (for example, paper labels on plastic bottles or metal rings on plastic bottle caps). (36) Potential hydrogen chloride emissions--The level of emissions from a municipal waste combustion unit that would occur from combusting municipal solid waste without emission controls for acid gases. (37) Potential mercury emissions--The level of emissions from a municipal waste combustion unit that would occur from combusting municipal solid waste without controls for mercury emissions. (38) Potential sulfur dioxide emissions--The level of emissions from a municipal waste combustion unit that would occur from combusting municipal solid waste without emission controls for acid gases. (39) Pyrolysis/combustion unit--A unit that produces gases, liquids, or solids by heating municipal solid waste. The gases, liquids, or solids produced are combusted and the emissions vented to the atmosphere. (40) Reconstruction--Rebuilding a municipal waste combustion unit and meeting two criteria: (A) The reconstruction begins after June 6, 2001. (B) The cumulative cost of the construction over the life of the unit exceeds 50 percent of the original cost of building and installing the municipal waste combustion unit (not including land) updated to current costs (current dollars). To determine what systems are within the boundary of the municipal waste combustion unit used to calculate the costs, see the definition in this section of "Municipal waste combustion unit." (41) Refractory unit or refractory wall furnace--A municipal waste combustion unit that has no energy recovery (such as through a waterwall) in the furnace of the municipal waste combustion unit. (42) Refuse-derived fuel--A type of municipal solid waste produced by processing municipal solid waste through shredding and size classification. That includes all classes of refuse-derived fuel including two fuels: (A) Low-density fluff refuse-derived fuel through densified refuse-derived fuel. (B) Pelletized refuse-derived fuel. (43) Same location--The same or contiguous properties under common ownership or control, including those separated only by a street, road, highway, or other public right-of-way. Common ownership or control includes properties that are owned, leased, or operated by the same entity, parent entity, subsidiary, subdivision, or any combination thereof. Entities may include a municipality, other governmental unit, or any quasi-governmental authority (for example, a public utility district or regional authority for waste disposal). (44) Second calendar half--The period that starts on July 1 and ends on December 31 in any year. (45) Shift supervisor--The person who is in direct charge and control of operating a municipal waste combustion unit and who is responsible for onsite supervision, technical direction, management, and overall performance of the municipal waste combustion unit during an assigned shift. (46) Spreader stoker, mixed fuel-fired (coal/refuse-derived fuel) combustion unit--municipal waste combustion unit that combusts coal and refuse-derived fuel simultaneously, in which coal is introduced to the combustion zone by a mechanism that throws the fuel onto a grate from above. Combustion takes place both in suspension and on the grate. (47) Standard conditions--When referring to units of measure, a temperature of 20 degrees Celsius and a pressure of 101.3 kilopascals. (48) Startup period--The period when a municipal waste combustion unit begins the continuous combustion of municipal solid waste. It does not include any warmup period during which the municipal waste combustion unit combusts fossil fuel or other solid waste fuel but receives no municipal solid waste. Cont'd... |
