Waste Disposal System Modification

{
  "id": "MLC-T-ENV-029935",
  "term": "Waste Disposal System Modification",
  "field": "Environment",
  "definition": "1. Change to a HMIWI unit after April 6, 2010, such that: (1) The cumulative costs of the modifications, over the life of the unit, exceed 50 per centum of the original cost of the construction and installation of the unit (not including the cost of any land purchased in connection with such construction or installation) updated to current costs, or (2) The change involves a physical change in or change in the method of operation of the unit which increases the amount of any air pollutant emitted by the unit for which standards have been established under section 129 or section 111.\n\n2. Change to an existing SSI unit later than September 21, 2011 and that meets one of two criteria: (1) The cumulative cost of the changes over the life of the unit exceeds 50-percent of the original cost of building and installing the SSI unit (not including the cost of land) updated to current costs (current dollars). To determine what systems are within the boundary of the SSI unit used to calculate these costs, see the definition of SSI unit. (2) Any physical change in the SSI unit or change in the method of operating it that increases the amount of any air pollutant emitted for which section 129 or section 111 of the Clean Air Act has established standards.\n\n3. Increase in the permitted volume design capacity of the landfill by either horizontal or vertical expansion based on its permitted design capacity as of May 30, 1991. Modification does not occur until the owner or operator commences construction on the horizontal or vertical expansion.\n\n4. CISWI unit you have changed later than promulgation of the final CISWI emission guidelines in 40 CFR part 60, subpart DDDD and that meets one of two criteria: (1) The cumulative cost of the changes over the life of the unit exceeds 50 percent of the original cost of building and installing the CISWI unit (not including the cost of land) updated to current costs (current dollars). To determine what systems are within the boundary of the CISWI unit used to calculate these costs, see the definition of CISWI unit. (2) Any physical change in the CISWI unit or change in the method of operating it that increases the amount of any air pollutant emitted for which section 129 or section 111 of the Clean Air Act has established standards.\n\n5. Municipal waste combustion unit you have changed later than June 6, 2001, and that meets one of two criteria: (1) The cumulative cost of the changes over the life of the unit exceeds 50 percent of the original cost of building and installing the unit (not including the cost of land) updated to current costs. (2) Any physical change in the municipal waste combustion unit or change in the method of operating it that increases the emission level of any air pollutant for which standards have been established under section 129 or section 111 of the Clean Air Act. Increases in the emission level of any air pollutant are determined when the municipal waste combustion unit operates at 100 percent of its physical load capability and are measured downstream of all air pollution control devices. Load restrictions based on permits or other nonphysical operational restrictions cannot be considered in this determination.\n\n6. Existing SSI unit that undergoes a modification, as defined in this section.\n\n7. Make a permanent physical change to the municipal waste combustor unit that reduces the maximum combustion capacity of the unit to less than or equal to 250 tons per day of municipal solid waste. A permit restriction or a change in the method of operation does not qualify as de-rating. (See the procedures specified in 40 CFR 60.58b(j) of subpart Eb for calculating municipal waste combustor unit capacity.)\n\n8. Make a permanent physical change to the municipal waste combustor unit that reduces the maximum combustion capacity of the unit to less than or equal to 35 tons per day of municipal solid waste. A permit restriction or a change in the method of operation does not qualify as de-rating.",
  "references": [
    "40 CFR 62.14490 (CFR 2018)",
    "40 CFR 62.16045 (CFR 2018)",
    "40 CFR 62.14351 (CFR 2018)",
    "40 CFR 62.14840 (CFR 2018)",
    "40 CFR 62.15410 (CFR 2018)",
    "40 CFR 62.14101 (CFR 2018)"
  ],
  "url": "https://mlchart.com/terminology/environment/waste-disposal-system-modification/"
}