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Health, Environment, Safety & Security

Policy Statement

MPC has a comprehensive Health, Environmental, Safety and Security Policy. This policy speaks to each of these critically important areas, but much of it is directly related to our performance. The entire policy is reproduced below.

HES&S Policy

Vision & Mission

The vision and mission for Health, Environment, Safety and Security (HES&S) at Marathon Petroleum Corporation (MPC) is built around the philosophy of no accidents, no injuries, no harm to the environment, and a commitment to excellence and continual improvement in the areas of HES&S. Simply, it means we believe our employees, contractors and others involved with our operations should work in a safe and healthy setting, free of injury. It means we conduct our operations in ways to protect the environment and strive to be a good corporate citizen wherever we operate.

MPC's HES&S Vision is aligned with the company's core values and applies to MPC and all its subsidiaries. To realize this vision, MPC pursues a "plan-do-check-adjust" management system to assess risks, set targets and measure progress. Business decisions affected by HES&S are guided by the Code of Business Conduct. Meeting these commitments is a responsibility shared by everyone, including all employees, contractors and third parties. 

HES&S Governance and Oversight

Board Management and Oversight

The MPC Board of Directors oversees MPC’s safety and environmental performance in multiple ways. Responsibility for risk oversight, including safety risk oversight, rests with our Board and its committees. The Audit Committee of the Board reviews the process by which enterprise risk management is undertaken by MPC and key risks are reviewed on an ongoing basis periodically throughout the year.

The MPC Board of Directors provides further oversight through its annual setting of safety and environmental performance metrics. As approved by the Compensation Committee of the Board, MPC has included and continues to include within the performance metrics approved for the annual cash bonus program, distinct measures of safety and environmental performance.  As described in our Citizenship Reports, MPC measures and reports its safety and environmental  performance primarily with three key metrics, the Marathon Safety Performance Index (MSPI), the Process Safety Score and/or Rate and the Designated Environmental Incident Score (DEI).  The MSPI is a metric designed to measure safety performance against annual goals set at best-in-class industry performance levels, including common industry metrics such as OSHA recordable incident and days away rates. The Process Safety Score and/or Rate measures the company’s success in identifying, understanding and controlling process hazards, which can be defined as unplanned or uncontrolled releases of highly hazardous chemicals or materials that have the potential to cause catastrophic fires, explosions, injury, plant damage, high-potential near misses or toxic exposures. The board establishes environmental and safety performance metrics and annual goals for MPC. MPC management reports on its environmental and safety performance at each regularly-scheduled board meeting. Significant incidents, including releases and enforcement matters, are also reviewed with the board. The board reviews MPC’s strategy, including strategy related to environmental issues and safety, at least annually.

Executive involvement

A Health, Environmental, Safety, and Security (HES&S) Management Committee comprising the president and other executive officers of MPC is responsible for oversight of HES&S strategy and execution. The HES&S Management Committee meets quarterly to receive reports of HES&S metrics, goals, strategy implementation and performance. This committee has recommended, and the MPC Management Executive Committee has adopted, an HES&S Policy (see above) to ensure that MPC conducts all aspects of its business in a safe, clean, secure, responsible and cost-effective manner.

Compliance and accountability

Responsibility for HES&S performance lies with the manager of each MPC facility and ultimately with the head of each MPC business unit. To ensure compliance with laws and regulations as well as company policies and standards, MPC employs more than 500 HES&S personnel in its operating components that are directly responsible for HES&S matters. In addition to these operating-component personnel, MPC maintains a corporate department that is responsible for legislative and regulatory matters at the federal and state levels and assists the HES&S Management Committee in formulating policy for the company. The corporate department includes the HES&S Audit group, which is an essential component of our RC14001® Management System.

RC14001®  Management System  

To drive Health, Environmental, Safety and Security (HES&S) performance throughout Marathon Petroleum Corporation's (MPC) business operations, we use risk-based management systems designed around the characteristic "plan-do-check-adjust" framework.

The adoption of the RC14001® Management System takes a best-practices approach to HES&S processes. Risk assessment and risk management are fundamental to MPC's management systems and are integrated into business and operating planning cycles and decision-making processes. 

Performance-based standards

To drive further consistency, MPC complements our management systems with performance-based HES&S standards that provide expectations for organizational performance. Standards are periodically reviewed and updated to reflect changes in laws or regulations, incorporate recommendations arising from audits and incident investigations, and to continually improve performance.

HES&S Beliefs

MPC has developed a set of “HES&S Beliefs” that describe our Health, Environment, Safety & Security (HES&S) values and culture. Each organization in MPC is required to recognize these beliefs as appropriate and commensurate with their individual risks.

HES&S Beliefes



Periodic audits are a critical part of MPC’s HES&S management strategy. MPC relies on a three-tiered audit program to maintain regulatory compliance, ensure adherence to company standards and achieve continual improvement.

  • Tier I- Tier I audits are frequent, targeted audits conducted by facility personnel.
  • Tier II - Tier II audits are periodic in-depth audits that focus on regulatory compliance. Tier II audits rely on subject matter experts (SMEs) within the company and SMEs from outside the company.
  • Tier III - Tier III audits are in-depth audits conducted MPC's HES&S Audit group that determine compliance with, and test the implementation and effectiveness of, MPC’s  HES&S Management System implementation and effectiveness. Tier III audits also review the effectiveness of the Tier I and Tier II audit programs.

In each of tier of the audit program, corrective action plans are developed to address findings, and findings and corrective actions are tracked to completion. Lessons learned from audits are shared across organizations. Key findings and trends from audits are communicated to MPC's HES&S leadership and senior management. Our RC14001 Management System is also audited by an independent, accredited auditor.