The Company's operations are subject to extensive federal, state, provincial (Canada) and local environmental laws and regulations, including those governing air pollutants, GHG emissions, management and remediation of historical contaminant sites, discharges to waters and the handling, storage, transportation, and disposal of waste and other materials. (Please see "Environmental Laws, Regulations and Strategies"and "Sustainability-Related Laws, Regulations and Strategies"in Item 1. Business for further discussion). Violation of these laws and regulations can result in significant fines and penalties, as well as other potential impacts on the Company's operations. These laws can impose strict, and in some circumstances, joint and several liability on both current and former owners, and on operators of facilities. If the Company is found to have violated such laws or regulations or to have acted in a manner that is inconsistent with regulatory expectations, such a finding could have a material adverse effect on the Company's business, financial condition, or operating results.
Such environmental liabilities may also be raised by adjacent landowners or third parties. In addition, in operating a railway, it is possible that releases of hazardous materials during derailments or other accidents may occur that could cause harm to human health or to the environment. Costs of remediation, damages and changes in regulations could materially affect the Company's operating results and reputation. The Company has been, and may in the future be, subject to allegations or findings to the effect that it has violated, or is strictly liable under, environmental laws or regulations. The Company currently has obligations at existing sites for investigation, remediation and monitoring, and will likely have obligations at other sites in the future. The actual costs associated with both current and long-term liabilities may vary from the Company's estimates due to a number of factors including, but not limited to changes in: the content or interpretation of environmental laws and regulations; required remedial actions; technology associated with site investigation or remediation; and the involvement and financial viability of other parties that may be responsible for portions of those liabilities. The Company's Mexican operations are subject to Mexican federal and state laws and regulations relating to the protection of the environment concerning, among other matters, emissions to the air, land, and water, and the handling of hazardous materials and wastes, and are also subject to the compliance with standards for water discharge, water supply, emissions, noise pollution, hazardous substances and transportation and handling of hazardous and solid waste. The Mexican government may bring administrative and criminal proceedings, impose economic sanctions against companies that violate environmental laws, and temporarily or even permanently close non-complying facilities.