We, like our competitors, are subject to various federal, state and local laws and regulations governing, among other things, air emissions, wastewater discharges, and the generation, handling, storage, transportation, treatment and disposal of hazardous wastes and other substances. In particular, industrial laundries currently use and must dispose of detergent wastewater and other residues, and, in the past, used perchloroethylene and other dry cleaning solvents. We are attentive to the environmental concerns surrounding the disposal of these materials and have, through the years, taken measures to avoid their improper disposal. Over the years, we have settled, or contributed to the settlement of, past actions or claims brought against us relating to the disposal of hazardous materials at several sites, and there can be no assurance that we will not have to expend material amounts to remediate the consequences of any such disposal in the future. Further, under environmental laws, an owner or lessee of real estate may be liable for the costs of removal or remediation of certain hazardous or toxic substances located on, or in, or emanating from such property, as well as related costs of investigation and property damage. Such laws often impose liability without regard to whether the owner or lessee knew of, or was responsible for, the presence of such hazardous or toxic substances. There can be no assurance that acquired or leased locations have been operated in compliance with environmental laws and regulations or that future uses or conditions will not result in the imposition of liability upon us under such laws or expose us to third-party actions such as tort suits.
We continue to address environmental conditions under terms of consent orders negotiated with the applicable environmental authorities or otherwise with respect to sites located in or related to certain sites.
We have accrued certain costs related to certain sites, including but not limited to, sites in Woburn and Somerville, Massachusetts, as it has been determined that the costs are probable and can be reasonably estimated. We, together with multiple other companies, are party to a consent decree related to our property and parcels of land (the "Central Area") at a site in Woburn, Massachusetts. The U.S. Environmental Protection Agency (the "EPA") has provided us and other signatories to the consent decree with comments on the design and implementation of groundwater and soil remedies at the Woburn site and investigation of environmental conditions in the Central Area. The consent decree does not address any remediation work that may be required in the Central Area. We, and other signatories, have implemented and proposed to do additional work at the Woburn site but many of the EPA's comments remain to be resolved. We have accrued costs to perform certain work responsive to the EPA's comments. Additionally, we have implemented mitigation measures and continue to monitor environmental conditions at a site in Somerville, Massachusetts. We have agreed to undertake additional actions responsive to a notice of audit findings from the Massachusetts Department of Environmental Protection concerning a regulatory submittal that we made in 2009 for a portion of the site. We have received demands from the local transit authority for reimbursement of certain costs associated with its construction of a new municipal transit station in the area of the Somerville site. This station was part of an extension of the local transit system. We have reserved for costs in connection with this matter; however, in light of the uncertainties associated with this matter, these costs and the related reserve may change.
On a quarterly basis, we assess each of our environmental sites to determine whether the costs of investigation and remediation of environmental conditions are probable and can be reasonably estimated as well as the adequacy of our accruals with respect to such costs. There can be no assurance that our accruals with respect to our environmental sites will be sufficient or that the costs of remediation and investigation will not substantially exceed our accruals as new facts, circumstances or estimates arise.
Our nuclear garment decontamination facilities are licensed by the Nuclear Regulatory Commission, or in certain cases, by the applicable state agency, and are subject to regulation by federal, state and local authorities. We also have nuclear garment decontamination facilities in the United Kingdom and the Netherlands. These facilities are licensed and regulated by the respective country's applicable federal agency. In the past, scrutiny and regulation of nuclear facilities and related services have resulted in the suspension of operations at certain nuclear facilities served by us or disruptions in our ability to service such facilities. There can be no assurance that such scrutiny and regulation will not lead to the shut-down of such facilities or otherwise cause material disruptions in our garment decontamination business.
In addition, our nuclear garment decontamination operations are subject to asset retirement obligations related to the decommissioning of our nuclear laundry facilities. We recognize as a liability the present value of the estimated future costs to decommission these facilities. The estimated liability is based on historical experience in decommissioning nuclear laundry facilities, estimated useful lives of the underlying assets, external vendor estimates as to the cost to decommission these assets in the future, and federal and state regulatory requirements. No assurances can be given that these accruals will be sufficient or that the costs of such decommissioning will not substantially exceed such accruals, as our facts, circumstances or estimates change, including changes in the Company's estimated useful lives of the underlying assets, estimated dates of decommissioning, changes in decommissioning costs, changes in federal or state regulatory guidance on the decommissioning of such facilities, or other changes in estimates.