we conduct our business in a socially and environmentally responsible manner, respecting the law and universal human rights to benefit the communities where we work

Chevron places the highest priority on the health and safety of our workforce and protection of our assets, communities and the environment. We are committed to continually improving our environmental performance and reducing the potential impacts of our operations through the implementation of our Operational Excellence Management System.

processesandstandards environmentalprinciples

four environmental principles

We have four environmental principles that define how we develop energy in an environmentally responsible manner 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.


seven environmental aspects

Consistent with ISO 14001, we defined seven types of environmental activities, or Core Corporate Environmental Aspects, that we address:

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site residual

Decommissioning, remediation, reclamation and/or abandonment of sites and facilities
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Management of all types of solid waste regardless of hazardous classification

accidental release icon

accidental releases
Unplanned releases including petroleum and chemical spills and releases of hazardous vapors
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energy efficiency greenhouse gas (GHG) icon

energy efficiency
and GHG

Energy use throughout Chevron’s operations and facilities and emissions of greenhouse gases (GHGs)
more about energy efficiency
more about GHGs

natural resources biodiversity icon

natural resources
Use of natural resources, including land and water, as well as biodiversity and potential impacts resulting from noise, vibrations and light
more about water
more about biodiversity

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

air emissions
Emissions of air pollutants, including criteria pollutants (NOX, SOX and particulate matter), volatile organic compounds and hazardous air pollutants
more about air emissions

measuring our performance

We  measure our environmental performance, which enables us to make informed business decisions around protection of the environment.  In  addition, we are committed to annually reporting performance data on the 11 environmental indicators in the 2015 IPIECA/API/IOGP Oil and gas industry guidance on voluntary sustainability reporting.

We continually seek risk-based, fit-for-purpose opportunities to improve our environmental performance, and as such, we have developed desired states for each of our Core Corporate Environmental Aspects. To help us meet our desired states, we have also established objectives and actions that are specific to each aspect. Our current and future enterprise-level work focuses on pursuing these desired states.

We rely on our environmental data to understand our performance and help identify potential areas of improvement. We have invested in processes, systems and training to meet our objective of maintaining high-quality environmental data. For example, we conduct detailed onsite and desktop peer reviews of local data collection processes, with a focus on operations that contribute the most to our enterprisewide data. These peer reviews verify that all sources have been accounted for and reported in accordance with Chevron’s Operational Excellence Data Reporting Standard. Our peer review process and independent reviews by third parties continue to provide ongoing assurance of our data quality to enable informed business decisions.

oil spills to land or water*

In  2016, we outperformed our target and achieved record lows in our petroleum spill volume.

Chart: Oil Spills to Land or Water

*Source: Annual company sustainability reports: British Petroleum plc (BP), ExxonMobil Corp. and Royal Dutch Shell. When needed, units converted to thousands of barrels(bbl) based on the following assumptions: 1 bbl oil = 0.134 metric tons = 0.159 cubic meters; 1 cubic meter = 1,000 liters. BP spill volume excludes oil recovered.