We are subject to numerous federal, state and local laws and regulations, including matters relating to the protection of the environment. Under certain environmental laws, a current or previous owner or operator of real estate may be liable for contamination resulting from the presence or discharge of hazardous or toxic substances or petroleum products at, on, or under, such property, and may be required to investigate and clean-up such contamination. Such laws typically impose liability and clean-up responsibility first on the party responsible for the contamination, but can also impose liability and clean-up responsibility on the owner and the current operator without regard to whether the owner or operator knew of or caused the presence of the contaminants, or the timing or cause of the contamination. Liability under such environmental laws has been interpreted to be joint and several unless the harm is divisible and there is a reasonable basis for allocation of responsibility and the financial resources are available to perform the remediation. For example, liability may arise as a result of the historical use of a property or from the migration of contamination from adjacent or nearby properties. Any such contamination or liability may also reduce the value of the property. In addition, the owner or operator of a property may be subject to claims by third-parties based on injury, damage and/or costs, including investigation and clean-up costs, resulting from environmental contamination present at or emanating from a property. We cannot predict what environmental legislation or regulations may be enacted in the future, or how existing laws or regulations will be administered or interpreted with respect to products or activities to which they have not previously been applied. Additionally, compliance with more stringent laws or regulations, as well as more vigorous enforcement policies of the regulatory agencies or stricter interpretation of existing laws, which may develop in the future, could have an adverse effect on our financial position, or that of our tenants, and could require substantial additional expenditures for future remediation. Accordingly, compliance with environmental laws and regulations could have a material adverse effect on our business, financial condition, results of operations, liquidity, ability to pay dividends or stock price.
The majority of the properties owned or controlled by us are leased as convenience store and gasoline station properties, and therefore may contain, or may have contained, USTs for the storage of petroleum products and other hazardous or toxic substances, which creates a potential for the release of such products or substances. Some of our properties are subject to regulations regarding the retirement and decommissioning or removal of long-lived assets including buildings containing hazardous materials, USTs and other equipment. Some of the properties may be adjacent to or near properties that have contained or currently contain USTs used to store petroleum products or other hazardous or toxic substances. In addition, certain of the properties are on, adjacent to, or near properties upon which others have engaged or may in the future engage in activities that may release petroleum products or other hazardous or toxic substances. There may be other environmental problems associated with our properties of which we are unaware. These problems may make it more difficult for us to re-lease or sell our properties on favorable terms, or at all.
We enter into leases and various other agreements which contractually allocate responsibility between the parties for known and unknown environmental liabilities at or relating to the subject properties. Under applicable laws, we are contingently liable for these environmental obligations in the event that our tenant does not satisfy them, and we are required to accrue for environmental liabilities that we believe are allocable to others under our leases if we determine that it is probable that our tenant will not meet its environmental obligations. It is possible that our assumptions regarding the ultimate allocation method and share of responsibility that we used to allocate environmental liabilities may change, which may result in material adjustments to the amounts recorded for environmental litigation accruals and environmental remediation liabilities. We assess whether to accrue for environmental liabilities based upon relevant factors including our tenants' histories of paying for such obligations, our assessment of their financial capability, and their intent to pay for such obligations. However, there can be no assurance that our assessments are correct or that our tenants who have paid their obligations in the past will continue to do so. We may ultimately be responsible to pay for environmental liabilities as the property owner if our tenant fails to pay them. The ultimate resolution of these matters could cause a material adverse effect on our business, financial condition, results of operations, liquidity, ability to pay dividends or stock price.
For substantially all of our triple-net leases, our tenants are contractually responsible for compliance with environmental laws and regulations, removal of USTs at the end of their lease term (the cost of which in certain cases is partially borne by us) and remediation of any environmental contamination that arises during the term of their tenancy. Under the terms of our leases covering properties previously leased to Getty Petroleum Marketing Inc. ("Marketing") (substantially all of which commenced in 2012), we agreed to be responsible for environmental contamination at the premises that was known at the time the lease commenced, and for environmental contamination which existed prior to commencement of the lease and is discovered (other than as a result of a voluntary site investigation) during the first 10 years of the lease term (or a shorter period for a minority of such leases). All of these 10-year (or, in certain cases, shorter) "look back" periods have now expired, therefore responsibility for all newly discovered contamination, even if it relates to periods prior to commencement of these leases, is contractually allocated to our tenant. Our tenants at properties previously leased to Marketing are in all cases contractually responsible for the cost of any remediation of contamination that results from their use and occupancy of our properties.
For additional information regarding pending environmental lawsuits and claims, and environmental remediation obligations and estimates, see "Item 3. Legal Proceedings", "Environmental Matters" in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations" and Notes 3 and 6 in "Item 8. Financial Statements and Supplementary Data" in this Annual Report on Form 10-K.
Environmental exposures are difficult to assess and estimate for numerous reasons, including the amount of data available upon initial assessment of contamination, alternative treatment methods that may be applied, location of the property which subjects it to differing local laws and regulations and their interpretations, changes in costs associated with environmental remediation services and equipment, the availability of state UST remediation funds and the possibility of existing legal claims giving rise to allocation of responsibilities to others, as well as the time it takes to remediate contamination and receive regulatory approval. In developing our liability for estimated environmental remediation obligations on a property-by-property basis, we consider, among other things, laws and regulations, assessments of contamination and surrounding geology, quality of information available, currently available technologies for treatment, alternative methods of remediation and prior experience. Environmental accruals are based on estimates derived upon facts known to us at this time, which are subject to significant change as circumstances change, and as environmental contingencies become more clearly defined and reasonably estimable.
We cannot predict if state UST fund programs will be administered and funded in the future in a manner that is consistent with past practices and if future environmental spending will continue to be eligible for reimbursement at historical recovery rates under these programs. As a result, our estimates in respect of recoveries from state UST remediation funds could change, which could adversely affect our accruals for environmental remediation liabilities.
Any changes to our estimates or our assumptions that form the basis of our estimates may result in our providing an accrual, or adjustments to the amounts recorded, for environmental remediation liabilities. Additional environmental liabilities could cause a material adverse effect on our business, financial condition, results of operations, liquidity, ability to pay dividends or stock price.