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| Most recent inventory of toxic air contaminants: | 1998 |
| Next inventory to be submitted: | 2002 |
Health Risk Assessment Results
| Below are the results of the health risk
assessment (HRA) performed on the toxic emission inventory for reporting
year 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. |
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| 1998 | |||
| Cancer risk: | 20.49
in a million footprint |
||
| Acute non-cancer risk: |
HI
= 18.22 footprint |
||
| Chronic non-cancer risk: | HI
= 0.04 not significant |
||
Pollutants
Risk "Driver" Pollutants
Benzene (cancer risk) and hydrogen sulfide (H2S; non-cancer acute risk) are the primary contributors to this
facility’s
significant risk status.
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.
Cancer risk: benzene
- EPA hazard summaryAcute non-cancer risk: hydrogen sulfide (endpoint = respiratory system)
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.
chlorine
- EPA hazard summaryp-dichlorobenzene
- EPA hazard summaryfluorocarbons
formaldehyde
- EPA hazard summarygasoline vapors
toluene
- EPA hazard summaryxylene
- EPA hazard summary
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 has not yet undergone public notification.
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 Santa Maria Refinery facility Risk Reduction Audit and Plan (RRAP) was due August 2001, but was not submitted until August 19, 2002. The APCD remanded the RRAP on September 3, 2002. Greka submitted a revised RRAP on November 26, 2002. The APCD remanded the RRAP on February 9, 2005. Greka submitted a second revision to the RRAP on May 9, 2005. The document is currently under review by the APCD.
Links for Additional Information on Air Toxics
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