protecting people and the environment is a chevron way value that guides our actions so that we get results the right way, every time

Every day, our employees strive to responsibly manage the environmental aspects of our operations. We make continual improvement in our environmental performance by following our Operational Excellence Management System (OEMS), and our Environmental Stewardship (ES) Corporate Standard Process, which require our businesses to systematically identify, assess and prioritize environmental risk and improvement opportunities. We also measure our environmental performance, which enables us to make informed business decisions around protection of the environment.


seven environmental aspects

Consistent with ISO 14001, we defined seven types of environmental activities, or "aspects," that we address:

Accidental releases prevention and response – Unplanned releases including petroleum and chemical spills and releases of hazardous vapors.

Air emissions – Emissions of air pollutants, including criteria pollutants (NOX, SOX and particulate matter), volatile organic compounds and hazardous air pollutants.

Energy efficiency and greenhouse gas – Energy use throughout Chevron’s operations and facilities and emissions of greenhouse gases (GHGs) including carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride.

Natural resources – Use of natural resources, including land and water, as well as biodiversity and potential impacts resulting from noise, vibrations and light.

Site residual impacts – Decommissioning, remediation, reclamation and/or abandonment of sites and facilities.

Waste – Management of all types of solid waste regardless of hazardous classification.

Wastewater – Management of all types of domestic and process wastewater, including produced water.


four environmental principles

We have four environmental principles that define our commitment to doing business in an environmentally responsible manner, as we believe that protecting the environment is compatible with providing energy. These principles are implemented across the life of our assets.

include the environment
in decision making

We all make decisions that may affect the environment. From our everyday actions to our major capital investments, we make better decisions when we consider the environment.

reduce our
environmental footprint

We use our business processes to identify and manage risks to the environment and reduce potential environmental impacts throughout the life of our assets.


We apply our Tenets of Operation and improve reliability and process safety to prevent accidental releases.

our sites

We work to decommission, remediate and reclaim operating and legacy sites with the aim of beneficial reuse.

processesandstandards focusareas
tight oil icon

In 2014, Chevron became the first energy company to meet the Center for Sustainable Shale Development’s voluntary shale gas drilling standards. The 15 performance standards include surface water and groundwater standards that require maximizing water recycling and developing groundwater protection plans.

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