Martinez Refinery

Martinez Refinery from an aerial perspective with mountains in the background


Step 1: Requirements for Working at the Refinery

  • MPC requires all contract employees must be enrolled and must participate in Approved Drug & Alcohol Testing Program 
  • To obtain a Drug and Alcohol Test program account:  
    For account set up; DISA’s Sales Department at 281-673-2530 or
  • For ASAP Drug Solutions account set up, phone: 562-624-2720(Press 3,
    Email: [email protected]
    Important: All Contract Employees must be tested and be in an “active status”, in an MPC approved Drug and Alcohol Test program (DISA or ASAP Drug Solutions) prior to get a badge. 

Contract Employees must pass a background security check from one of the following background check providers: (These are the currently approrved MPC background check providers)

  • DISA Global Solutions
  • First Advantage
  • Guidepost Solutions LLC
  • S2 Verify
  • OSCA is the preferred point of contact to establish the contractor training account and aid with any training questions/navigation of the website for scheduling training. 
  • Advanced High Hazard Facility Training: 20 hours - Instructor Lead; State (Cal OSHA) Required: (Can be taken at OSCA in CA, HASC in Houston, or Alliance Safety Council in Baton Rouge, LA (with appointment)
    • Principles of Petroleum Refining - 4 hour (OSCAHHFT-1) 
    • Refinery Safety Overview - 8 hour (OSCAHHFT-2)  
    • Craft Specific Hazards - 8 hour (OSCAHHFT-3)  
  • Site Specific Training: 
    • Marathon MTZ Site Orientation

Contract workers will obtain their refinery access ID card at the Refinery Security & Badging office at the following address:

  • Street Address - 1743 Arnold Industrial Way, Concord, CA 94520

The following is required and will be verified by Refinery Security Badging Office Personnel, prior to issuing the Refinery Photo Access ID badge/card:

Security/Badging personnel will verify all site assess requirements. All requirements are listed below.

Contractor must present the following items for verification process to begin:

  1. Valid Government issued ID,
  2. Proof of Training,
  3. TWIC card,
  4. Contractor must also know their SSN number

Note: No additional documents are required to receive the Refinery Photo Access ID badge/card.

Step 2: What to Know before Coming Onsite

Illegal drugs and unauthorized alcohol, weapons and unauthorized firearms are prohibited on refinery property. All individuals are subject to search while on company property.

Beards are prohibited within the refinery. Mustaches and short sideburns are permitted if they do not interfere with the facial seal of protective breathing devices.

The following PPE is required for entry into a process unit and/or tank farm area(s):

  • Hard Hat
  • Chemical Goggles - Available on Person
  • Safety Glasses
  • Hearing Protection
  • NFPA 2112 FR Clothing
  • Gloves - Min - Cut Level 4 Glove for General Duty Use
  • Personal H2S Monitor
  • Safety Toed Shoe with a defined heel

Certain areas/jobs may require additional PPE which shall be worn in accordance with posted signs or as stated on the Safe Work Permit.

NOTE: Contractor PPE is not supplied by Marathon Petroleum Company LP.

Safety One

Please view this video that best describes the fundamental pillars of MPC’s safety culture. If you have any questions or want more information please contact the Site Safety Supervisor for information.