Santa Barbara County Air Pollution Control District

Significant Risk Facilities
Greka Oil & Gas
South Cat Canyon Facility

 

Location: Cat Canyon Oil Field
Santa Maria
Contact Person: Susan Whalen
(805) 357-2945
Facility Description: The facility is located in the Cat Canyon Oil Field south and east of Santa Maria, CA.  Active wells at the facility produce oil, gas, and waste water.  These products are gathered via pipeline, separated, stored, and metered.  The oil and gas are transported out of the facility via pipelines.  The waste water is disposed by underground injection on-site.

Photos | Toxic Emissions | Health Risk/Footprints | Pollutants 
 Public Notification | Risk Reduction | Links

Photos

Click on the thumbnails below to see full size photos of the facility.

greka1.jpg (82379 bytes)
Greka Cat Canyon facility
greka2.jpg (88762 bytes)
Heating/separating unit
greka3.jpg (118037 bytes)
Pumping unit


Toxic Emissions

The Greka South Cat Canyon facility produces, treats, stores, and ships oil and gas.  These processes involve equipment (tanks, internal combustion engines, boilers, dehydrators) that emits toxic air contaminants.  Additionally, fugitive hydrocarbons, which contain certain toxic air contaminants, are emitted from the piping, connections, and other plumbing on the site.

Most recent  inventory of toxic air contaminants: 2003
   


Health Risk Assessment Results

These are the results of the health risk assessments (HRAs) performed on toxic emission inventories from 1991, 1994, 1998 and 2003.

The health risk assessment report for 2003 is available here: 2003 HRA.  The health risk assessment files are available from the District upon request by e-mailing APCDPublicRecordsActRequest@sbcapcd.org (please specify inventory year in e-mail).

Increased cancer risk is expressed as the number of individuals affected in a hypothetical population of one million.  A significant risk is defined as 10 in one million or greater. 

Non-cancer acute (short-term) and chronic (long-term) related illnesses are conveyed in terms of the Hazard Index (HI).  The HI is a ratio of the predicted concentration of the facility’s reported emissions to a concentration considered acceptable to public health professionals.  A significant risk is defined as an HI of 1 or greater. 

The risk footprints are maps of the area affected.  The facility is required to notify the people living within the footprints.  Footprints are only prepared for significant risks.  The footprints will change as the facility reduces its emissions and may not reflect the current risk footprint.

1991 1994 1998 2003
Cancer risk:  63 in a million
footprint
13 in a million
footprint
12 in a million
footprint
8.33 in a million
not significant
Acute
non-cancer risk:
HI = 0.3
not significant
HI = 1.8
footprint
HI = 22.93
footprint
HI = 3.44
footprint
Chronic non-cancer risk: HI = 0.8
not significant
HI = 1.2
footprint
HI = 0.27
not significant
HI = 0.03
not significant


Pollutants

Risk "Driver" Pollutants

Acrolein and formaldehyde are the risk driver pollutants for the acute non-cancer risk.  The primary risk driving devices are field gas-fired internal combustion engines.

The links provided, if available, to the USEPA Unified Air Toxics Web Site Health Effects Notebook for Hazardous Air Pollutants.

Links to chemical information will open a new browser window the first time you click one. After that the information will appear in that same window, which may be hidden behind the window you are viewing. 

Acute non-cancer risk:  acrolein (endpoint = eyes)
   - EPA hazard summary

Other Toxic Pollutants Emitted by this Facility

The following pollutants are emitted during oil processing, storage, and transfer, but are not the primary contributors to the facility’s significant risk status.

acetaldehyde
     - EPA hazard summary

aluminum
  
arsenic
   - EPA hazard summary

ammonia
 
antimony
   - EPA hazard summary

barium

benzene

    - EPA hazard summary

beryllium
   - EPA hazard summary

1,3-butadiene
   - EPA hazard summary

cadmium
    - EPA hazard summary

carbon tetrachloride
   - EPA hazard summary

chlorobenzene   
    - EPA hazard summary

chloroform   
     - EPA hazard summary

cobalt   
   - EPA hazard summary

copper

p-dichlorobenzene
    - EPA hazard summary

1,1-dichloroethane
    - EPA hazard summary

1,2-dichloropropane
    - EPA hazard summary

1,3-dichloropropene
   - EPA hazard summary

ethylbenzene

ethylene dibromide
    - EPA hazard summary

ethylene dichloride
     - EPA hazard summary

formaldehyde
   - EPA hazard summary

hexavalent chromium
    - EPA hazard summary

hexane
   - EPA hazard summary

hydrogen sulfide
 
manganese
   - EPA hazard summary

mercury
    - EPA hazard summary

methanol
    - EPA hazard summary

methylene chloride
    - EPA hazard summary

naphthalene
   - EPA hazard summary

nickel
    - EPA hazard summary

polycyclic aromatic hydrocarbon (PAH)
     - EPA hazard summary

propylene
  
selenium
   - EPA hazard summary

styrene
   - EPA hazard summary

toluene
     - EPA hazard summary

1,1,2,2-tetrachloroethane
   - EPA hazard summary

1,1,2-trichloroethane
   - EPA hazard summary

vanadium

vinyl chloride
    - EPA hazard summary

xylene
    - EPA hazard summary

zinc 


Explanation of Risk


Public Notification

The primary goal of notification under the Air Toxics "Hot Spots" Program is to inform potentially exposed individuals of significant health risks associated with toxic air emissions routinely released from facilities in Santa Barbara County.  The first public notification letter for this facility was sent to the affected public on April 26, 1999.  Public notification was not required for the 2003 inventory year as the only significant risk was on a public roadway.  No residents or businesses are within the significant risk isopleth.


Risk Reduction

Because this facility’s health risk assessment indicates a significant risk, the facility operator is required to conduct an airborne toxic risk reduction audit and develop a plan to implement airborne toxic risk reduction measures.

The Greka South Cat Canyon facility submitted a Risk Reduction Audit and Plan on March 12, 2014.  This plan was conditionally approved by the District on March 28, 2014.  The conditional approval required that Greka submit a permit application for the permanent removal of five internal combustion engines.  The permit application was submitted on July 7, 2014.


Links for Additional Information on Air Toxics

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