Our operations, like those of other companies engaged in similar businesses, require the handling, use, storage and disposal of certain regulated materials. As a result, we are subject to the requirements of federal, state and local environmental protection and occupational health and safety laws and regulations. These laws regulate issues such as wastewater, stormwater, solid and hazardous waste and materials, and air quality. While our operations generally do not raise significant environmental risks, we use petroleum products, solvents and other hazardous substances for fueling and maintaining our equipment and vehicles. Environmental laws also impose obligations and liability for the cleanup of properties affected by hazardous substance spills or releases. These liabilities can be imposed on the parties generating or disposing of such substances or the operator of the affected property, often without regard to whether the owner or operator knew of, or was responsible for, the presence of hazardous substances. Accordingly, we may become liable, either contractually or by operation of law, for remediation costs even if a contaminated property is not currently owned or operated by us, or if the contamination was caused by third parties during or prior to our ownership or operation of the property. As such, there can be no assurance that prior site assessments or investigations have identified all potential instances of soil or groundwater contamination. Future events, such as changes in existing laws or policies or their enforcement, or the discovery of currently unknown contamination, may give rise to additional remediation liabilities, which may be material.
We are subject to potentially significant civil or criminal fines or penalties if we fail to comply with any of these requirements. We have made and will continue to make capital and other expenditures in order to comply with these laws and regulations. These include climate change regulation, which could materially affect our operating results through increased compliance costs. The requirements of these laws and regulations are complex, change frequently, and could become more stringent in the future. It is possible that these requirements will change or that liabilities will arise in the future in a manner that could have a material adverse effect on our business, financial condition and results of operations.
In addition, the U.S. Congress and other state and federal legislative and regulatory authorities in the United States have considered, and likely will continue to consider, numerous measures related to climate change, greenhouse gas emissions and other laws and regulations affecting some of our end markets, such as oil, gas and other natural resource extraction. Should such laws and regulations become effective, demand for our services could be affected, our fleet or other costs could increase and our business could be materially adversely affected. For example, the Environmental Protection Agency (the "EPA") recently issued a final rule that will sharply reduce emissions of methane and other harmful air pollution from oil and natural gas operations, including from existing sources nationwide. The final rule includes New Source Performance Standards, to reduce methane and smog-forming volatile organic compounds from new, modified and reconstructed sources, and Emissions Guidelines, which set procedures for states to follow as they develop plans to limit methane from existing sources, including oil and natural gas operations. While we cannot be certain of this rule's impact as we wait for states to submit their plans to the EPA for approval, we anticipate that this could adversely impact the operations of our customers, specifically those in the oil and gas industry, which could reduce demand for our services and have an adverse impact on our business.
Further, investors are placing a greater emphasis on non-financial factors, including climate risk and other ESG issues, when evaluating investment opportunities. If we are unable to provide sufficient disclosure about ESG practices or if we fail to achieve ESG goals, investors may not view us as an attractive investment, which could have a negative effect on our stock price and business. Additionally, customers are becoming increasingly focused on ESG and climate related matters and have started considering and incorporating these factors when choosing suppliers, along with existing factors such as price and affordability. If we are unable to meet those additional requirements, we could be adversely impacted.