Our assets are subject to various U.S. federal, state and local environmental laws that impose liability for contamination. Under these laws, governmental entities have the authority to require us, as the current or former owner of an asset, to perform or pay for the clean-up of contamination (including hazardous substances, asbestos and asbestos-containing materials, waste or petroleum products) at, on, under or emanating from the asset and to pay for natural resource damages arising from such contamination. Such laws often impose liability without regard to whether the owner or operator or other responsible party knew of, or caused such contamination, and the liability may be joint and several. Because these laws also impose liability on persons who owned an asset at the time it became contaminated, it is possible we could incur cleanup costs or other environmental liabilities even after we sell assets. Contamination at, on, under or emanating from our assets also may expose us to liability to private parties for costs of remediation and/or personal injury or property damage. In addition, environmental laws may create liens on contaminated sites in favor of the government for damages and costs it incurs to address such contamination. If contamination is discovered on our assets, environmental laws also may impose restrictions on the manner in which the assets may be used or businesses may be operated, and these restrictions may require substantial expenditures. Moreover, environmental contamination can affect the value of an asset and, therefore, an owner's ability to borrow funds using the asset as collateral or to sell the asset on favorable terms or at all. Furthermore, persons who sent waste to a waste disposal facility, such as a landfill or an incinerator, may be liable for costs associated with cleanup of that facility.
In addition, our assets are subject to various federal, state, and local environmental, health and safety laws and regulations that address a wide variety of issues, including, but not limited to, storage tanks, air emissions from emergency generators, storm water and wastewater discharges, lead-based paint, mold and mildew, and waste management. We may handle and use hazardous or regulated substances and wastes as part of their operations, which substances and wastes are subject to regulation. We may incur costs to comply with these environmental, health and safety laws and regulations and could be subject to fines and penalties for non-compliance with applicable requirements.
Environmental laws in the U.S. also require that owners or operators of buildings containing asbestos properly manage and maintain the asbestos, adequately inform or train those who may come into contact with asbestos and undertake special precautions, including removal or other abatement, if that asbestos is disturbed during building renovation or demolition. These laws may impose fines and penalties on building owners or operators who fail to comply with these requirements and may allow third parties to seek recovery from owners or operators for personal injury associated with exposure to asbestos. Some of our assets may contain asbestos-containing building materials.
When excessive moisture accumulates in buildings or on building materials, mold growth may occur, particularly if the moisture problem remains undiscovered or is not addressed over a period of time. Some molds may produce airborne toxins or irritants. Indoor air quality issues can also stem from inadequate ventilation, chemical contamination from indoor or outdoor sources, and other biological contaminants such as pollen, viruses and bacteria. Indoor exposure to airborne toxins or irritants above certain levels can be alleged to cause a variety of adverse health effects and symptoms, including allergic or other reactions. As a result, the presence of significant mold or other airborne contaminants at any of our assets could require us to undertake a costly remediation program to contain or remove the mold or other airborne contaminants from the affected asset or increase indoor ventilation. In addition, the presence of significant mold or other airborne contaminants could expose us to liability to third parties if property damage or personal injury occurs.
Liabilities and costs associated with environmental contamination at, on, under or emanating from our assets, defending against claims related to alleged or actual environmental issues, or complying with environmental, health and safety laws could be material and could materially and adversely affect us. We can make no assurances that changes in current laws or regulations or future laws or regulations will not impose additional or new material environmental liabilities or that the current environmental condition of our assets will not be affected by our operations, the condition of the assets in the vicinity of our assets, or by third parties unrelated to us. The discovery of material environmental liabilities at our assets could subject us to unanticipated significant costs, which could significantly reduce or eliminate our profitability and the cash available for distribution to our stockholders.