Item 2. Properties
ITEM 2. PROPERTIES
Our principal executive offices are in Norwell, Massachusetts. We own our primary executive office building in Massachusetts which occupies 104,000 square feet. We also currently lease 59,300 square feet of additional office space in Norwell, Massachusetts under arrangements which do not expire until 2042. We have regional administrative offices in Texas, Canada and India. Our properties are sufficient and suitable for our current needs.
We have nearly 800 operating locations housed at approximately 580 properties covering all 50 states, nine Canadian provinces, Puerto Rico and Mexico. These operating locations include service centers, branches, satellite locations, active hazardous waste management properties and oil processing, blending and packaging facilities. Many of our properties offer multiple capabilities. The following sets forth certain information regarding our key properties as of December 31, 2023.
Service Centers, Branches and Satellite Locations
We have more than 520 service centers, branches and satellite locations, across approximately 425 locations throughout the United States and Canada. These serve as principal sales and service centers from which we provide our environmental, industrial and Safety-Kleen branch core services for our Environmental Services business as well as oil collection and product sales locations for our Safety-Kleen Sustainability Solutions ("SKSS") business.
Active Hazardous Waste Management Properties
Incinerator Facilities. We own and operate five incinerator facilities that have a total of nine incinerators with 561,721 tons of total practical capacity and an overall average utilization rate for 2023 of 83.7%. Our practical capacity is not based on a theoretical 24-hour, seven-day operation, but rather is determined as the production level at which our incinerators can operate with an acceptable degree of efficiency, taking into consideration factors such as longer term customer demand, permanent staffing levels, operating shifts, holidays, scheduled maintenance and mix of product. Capacity utilization is calculated by dividing actual production tons by practical capacity at each incinerator. The following table summarizes the practical capacity and utilization for each incinerator for the year ended December 31, 2023:
# of Incinerators Practical Capacity (Tons) Utilization Rate
Year Ended
December 31, 2023
Arkansas 3 145,072 93.8%
Nebraska 1 58,808 86.1%
Utah 1 66,815 83.2%
Texas 3 165,500 82.3%
Ontario, Canada 1 125,526 73.1%
9 561,721 83.7%
Our incinerators offer a wide range of technological capabilities to customers through this network. In the United States, we provide incineration through one fluidized bed thermal oxidation unit and three solids and liquids-capable incinerator facilities and we operate one active hazardous waste liquid injection incinerator in Canada.
We are currently constructing a second incinerator at our Kimball Nebraska facility that will increase our permitted capacity by approximately 70,000 tons. This incinerator will be the sister site to our El Dorado, Arkansas facility housing a solids and liquids-capable incinerator and is set to open in late 2024.
Commercial and Non-Commercial Landfills. In the United States and Canada, we operate seven commercial landfills with approximately 27.2 million cubic yards of remaining highly probable airspace. Six of our commercial landfills are designed and permitted for the disposal of hazardous waste and one landfill is operated for non-hazardous industrial waste disposal and, to a lesser extent, municipal solid waste. In addition to our commercial landfills, we also own and operate one non-commercial landfill that only accepts waste from our on-site incinerator. Additionally, we are in the process of closing two commercial landfills, Altair and Westmorland, which began closure procedures in 2020, and one on-site non-commercial landfill that reached capacity in early 2023. The three landfills that are already in closure, are excluded from the landfill counts above. See "Landfill Accounting" within Note 2, "Significant Accounting Policies," to our consolidated financial statements included in Item 8 of this report for additional information on our commercial and non-commercial landfills.
Wastewater Treatment Facilities. We operate a total of ten facilities, of which eight are owned and two are leased, that offer a range of wastewater treatment technologies and services. Wastewater treatment consists primarily of three types of services: hazardous wastewater treatment, sludge dewatering or drying and non-hazardous wastewater treatment.
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Treatment, Storage and Disposal Facilities. We operate 32 TSDFs in the United States and Canada, of which 29 are owned and three are leased. Our TSDFs facilitate the movement of materials among our network of service centers and treatment and disposal facilities. Transportation may be accomplished by truck, rail, barge or a combination of modes, with our own assets or in conjunction with third-party transporters. Specially designed containment systems, vehicles and other equipment permitted for waste transport, together with drivers trained in transportation and waste handling procedures, provide for the movement of customer waste streams.
Other Hazardous Waste Management Properties. We also own eight facilities specializing in solvent recovery, and two autoclave facilities specifically designed to treat medical waste.
Oil Processing, Blending and Packaging Facilities
Oil Terminals. We operate a total of 78 oil terminals, of which 52 are owned and 26 are leased, which collect or process used oil prior to delivery to our re-refineries or distribution as recycled fuel oil.
Oil Recycling and Re-refining Facilities. We own eight oil re-refineries, seven in the United States and one in Canada. With nearly 234.9 million gallons of used oil collected this year, we were able to return 221 million gallons of new re-refined oil, lubricants and byproducts back into the marketplace in 2023.
Oil Packaging and Blending Facilities. We operate a total of four oil packaging and blending facilities, of which three are owned and one is leased.
ITEM 3. LEGAL PROCEEDINGS
See Note 18, "Commitments and Contingencies," to our consolidated financial statements included in Item 8 of this report for a description of legal proceedings.
ITEM 4. MINE SAFETY DISCLOSURES
Not applicable.
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PART II