We are subject to a wide range of general and industry-specific laws and regulations relating to the protection of the environment, including those governing:
- silvicultural activities, including use of pesticides and herbicides, harvesting, and road building,- endangered and at-risk species,- stormwater and surface water management,- air emissions,- the cleanup of contaminated sites,- health and safety matters, and - building codes.
We have incurred, and we expect to continue to incur, significant capital, operating and other expenditures to comply with applicable environmental laws and regulations. We also have incurred and could incur in the future substantial costs, such as civil or criminal fines, sanctions and enforcement actions (including orders limiting our operations or requiring installation of pollution control equipment or other remedial actions), cleanup and closure costs, and third-party claims for property damage and personal injury as a result of violations of, or liabilities under, environmental laws and regulations on properties we currently own or have owned in the past. Because environmental regulations are constantly evolving, we will continue to incur costs to maintain compliance with those laws and our compliance costs could increase materially. In addition, air emissions, stormwater, and surface water management regulations may present liabilities and are subject to change. Future compliance with existing and new laws, regulations, environmental permits, and other requirements may disrupt our business operations, increase potential liabilities, and require significant expenditures.
As the owner and operator of land, we have been and may be in the future liable under environmental laws for cleanup, closure and other damages resulting from the presence and release of hazardous substances on or from our properties or operations we currently own or have owned and operated in the past. In addition, we lease some of our properties to third-party operators for the purpose of exploring, extracting, developing and producing oil and gas in exchange for fees and royalty payments. These operations may create risk of environmental liabilities for any unlawful discharge of oil, gas or other chemicals into the air, soil or water. Generally, these third-party operators indemnify us against any such liability, and we require that they maintain liability insurance during the term of our lease with them. However, if for any reason an unlawful discharge occurs and our third-party operators are not able to honor their indemnity obligation, or if the required liability insurance was not in effect, then it is possible that we could be held responsible for costs associated with environmental liability caused by such third-party operators.
The amount and timing of environmental expenditures is difficult to predict, and in some cases, our liability may exceed forecasted amounts or the value of the property itself. The discovery of additional contamination or the imposition of additional cleanup obligations at our current or previously owned sites or third-party sites may result in significant additional costs. For example, we have agreed to voluntarily participate as a non-federal sponsor in connection with one of the Minnesota Pollution Control Agency's (MPCA) sediment contamination remediation projects in a reservoir downstream of one of our former properties that we sold to a third party in 2002. Additional information regarding this matter is included in Note 18: Commitments and Contingencies in the Notes to Consolidated Financial Statements contained in this report and incorporated herein by reference.
Similarly, threatened and endangered species restrictions apply to activities that would adversely impact a protected species or significantly degrade its habitat. A number of species on our timberlands have been, and in the future may be, protected under these laws. If current or future regulations, including increased mandates for biodiversity, increased wildlife habitats, additional species on our lands classified as endangered, or the enforcement of endangered species regulations become more restrictive, the amount of our timberlands subject to harvest restrictions could increase.