AB 2588 requires the South Coast Air Quality Management District (AQMD) to
designate high, intermediate and low priority categories and include each
facility within the appropriate category based on its individual priority. Per the requirements of AB2588, the AQMD’s prioritization procedure
considers the potency, toxicity, quantity and volume of hazardous materials
released from the facility; the proximity of the facility to potential
receptors, including, but not limited to, hospitals, schools, daycare
centers, worksites and residences.; and any other factors that the AQMD
finds and determines may indicate that the facility may pose a significant
risk to receptors. The AQMD procedures also include adjustment factors for
exposure period, averaging times, and the treatment of multi-pathway
pollutants.
A facility receives two scores: one for carcinogenic effects and the
other for non-carcinogenic effects. The facility is then ranked based on the
higher of the two scores. Three categories are used in the ranking: high
priority (Category A), intermediate priority (Category B) and low priority
(Category C). Facilities designated as high priority are required to submit
Heath Risk Assessments to assess the risk to their surrounding community.
Facilities ranked with intermediate priority are considered to be District
tracking facilities, which are then required to submit complete toxics
inventory once every four years. Facilities ranked with low priority are
exempt from reporting. The following thresholds are used to prioritize
facilities:
| |
Total Facility Score |
Category |
| |
TS > 10 |
High Priority |
| |
1 < TS < 10 |
Intermediate Priority |
| |
TS < 1 |
Low Priority |
For more information about the following:
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