As the owner or operator of various real properties and facilities, we must comply with various federal, state and local environmental, health, safety and land use laws and regulations. We and our properties are subject to such laws and regulations relating to the use, storage, disposal, emission and release of hazardous and non-hazardous substances and employee health and safety, as well as zoning restrictions. A substantial portion of our properties that have resulted in certain remediation activities currently include, or previously included, automotive care center facilities and retail fueling facilities, and/or above-ground or underground storage tanks, and are or were subject to laws and regulations governing the handling, storage and disposal of hazardous substances contained in some of the products or materials used or sold in the automotive care center facilities (such as gasoline, motor oil, fluid in hydraulic lifts, antifreeze, solvents and lubricants), the recycling/disposal of batteries and tires, air emissions, wastewater discharges and waste management. In addition to these products, the equipment in use or previously used at such properties, such as service equipment, car lifts, oil/water separators, and storage tanks, has been subject to increasing environmental regulation relating to, among other things, the storage, handling, use, disposal and transportation of hazardous materials. There are also federal, state and local laws, regulations and ordinances that govern the use, removal and/or replacement of underground storage tanks in the event of a release on, or an upgrade or redevelopment of, certain properties. Such laws, as well as common-law standards, may impose liability for any releases of hazardous substances associated with the underground storage tanks and may provide for third parties to seek recovery from owners or operators of such properties for damages associated with such releases. If hazardous substances are released from any underground storage tanks on any of our properties, we may be materially and adversely affected. In a few states, transfers of some types of sites are conditioned upon clean-up of contamination. If any of our properties are subject to such contamination, we may be subject to substantial clean-up costs in order to sell or otherwise transfer the property.
As the owner or operator of real property, we may also incur liability based on various building conditions. For example, buildings and other structures on properties that we currently own or operate or those we acquire or operate in the future contain, may contain, or may have contained, asbestos-containing material (or "ACM"). Environmental, health and safety laws require that ACM be properly managed and maintained and may impose fines or penalties on owners, operators or employers for non-compliance with those requirements. These requirements include special precautions, such as removal, abatement or air monitoring, if ACM would be disturbed during maintenance, renovation or demolition of a building, potentially resulting in substantial costs. In addition, we may be subject to liability for personal injury or property damage sustained as a result of exposure to ACM or releases of ACM into the environment. In addition, the presence of significant mold or other airborne contaminants at any of our properties could require us to undertake a costly remediation program to contain or remove the mold or other airborne contaminants or increase ventilation and/or expose us to liability from our tenants, employees of our tenants, or others if property damage or personal injury occurs.
Moreover, additional laws which may be passed in the future, or a finding of a violation of or liability under existing laws, could require us and/or one or more of the unconsolidated entities to make significant expenditures and otherwise limit or restrict some of our or its or their operations, which could have an adverse effect on our business, financial condition and results of operations.