Greka UCB/Dominion

Significant Risk Facilities Greka Energy Corporation UCB/Dominion Lease www.grekaenergy.com
Location:	Cat Canyon Oil Field (Section 23, T9N, R33W) Santa Maria
Contact Person:	Susan Whalen (805) 347-8700 ext. 205
Facility Description:	The facility is located in the Cat Canyon Oil Field. It is part of Greka's Cat Canyon Stationary Source. The UCB/Dominion facility will be evaluated as part of the Cat Canyon Stationary Source for any health risk assessments performed after 2000. There are a total of seven wells on both leases, one on the UCB lease and six on the Dominion lease. These wells produce oil, water and gas, which are pumped to the tank battery and enter a heater treater. Gas evolving from the treater is sold along with the casing gas. The oil is gravity fed into a highway tanker truck for sales. Water produced from the heater flows to a series of wastewater tanks and sumps prior to being reinjected into the formation.

The UCB/Dominion facility produces, treats, stores, and ships oil and gas. These processes involve a number of toxic emitting equipment (tanks, internal combustion engines, flares, and sumps) and fugitive components.

Most recent inventory of toxic air contaminants:	2003
Greka is updating the UCB/Dominion facility Air Toxics Emission Inventory Plan and Report, as part of the larger Cat Canyon Stationary Source toxics inventory. An updated health risk assessment for this facility will be performed based on this inventory.

Health Risk Assessment Results

Below are the results of the health risk assessment (HRA) performed on the toxic emission inventory from 1998. 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.
	1998
Cancer risk:	2 in a million not significant
Acute non-cancer risk:	HI = 4.3 footprint
Chronic non-cancer risk:	HI = 0.05 not significant

Pollutants

Risk "Driver" Pollutants

Acrolein is the primary contributor to this facility’s significant risk status. Acrolein is a combustion product of boilers, heater treaters, and internal combustion engines operating on field gas.

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

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Acute non-cancer risk: acrolein (endpoint = respiratory system)
- 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. This facility will notify the public as part of Greka's Cat Canyon Stationary Source public notification process.

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.

This facility will reduce its risk as part of Greka's Cat Canyon Stationary Source risk reduction process.

Links for Additional Information on Air Toxics

Return to Significant Risk Facilities

Significant Risk Facilities Greka Energy Corporation UCB/Dominion Lease www.grekaenergy.com

Photos

Toxic Emissions

Health Risk Assessment Results

Pollutants

Public Notification

Risk Reduction

Links for Additional Information on Air Toxics

Significant Risk Facilities
Greka Energy Corporation
UCB/Dominion Lease
www.grekaenergy.com