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Programs & Organizations > Hazardous Materials > Industrial Safety Ordinance (ISO)

Industrial Safety Ordinance (ISO)


County Ordinance Chapter 450-8 (1.8MB PDF, 23pp.) expands on the California Accidental Release Prevention (CalARP) Program for facilities meeting the following:

  • The facility is within an unincorporated area of the County
  • The facility is either a petroleum refinery or chemical plant
  • The facility is required to submit a Risk Management Plan (RMP) to the U.S. EPA and Contra Costa County Health Service (CCHS)
  • The facility has at least one Program 3 process

The six facilities currently subject to the County's Industrial Safety Ordinance (ISO) include: Air Products (within the Shell Refinery), Air Products (within the Tesoro Refinery), ConocoPhillips Rodeo Refinery, General Chemicals West Bay Point Works, Shell Oil Martinez Refinery and Tesoro Golden Eagle Refinery. The City of Richmond has adopted an Industrial Safety Ordinance (Municipal Code Chapter 6.43, RISO) that is identical to the County's Industrial Safety Ordinance. The two facilities located in the City of Richmond that are subject to this ordinance include: Chevron Richmond Refinery and General Chemicals West Richmond Works.


Content provided by Contra Costa County Hazardous Materials Programs of Contra Costa Health Services.

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