Linda C. Murchison California Air Resources Board May 6th, 2002 Environmental Justice Program Barrio Logan Case Study Air Resources Board California Environmental Protection Agency

California Air Resources Board u State air pollution control agency u Public health highest priority u Adopts state air quality standards u Oversight authority over local air pollution agencies u Emission control standards for motor vehicles and other air pollution sources

Environmental Justice at the ARB u Ensure fair treatment of all people u Policies approved in December u Provides framework for implementation u Requires specific actions over the next two years

ARB’s Environmental Justice Policies and Actions u Incorporate environmental justice into ARB activities and programs u Promote environmental justice at the community level u Adopt measures to reduce public health risk u Support research on the impacts of air pollution at the local level

Barrio Logan Study u Community involvement u Air monitoring for 17 months –Results similar to other areas in San Diego u Neighborhood scale emission inventories and modeling u Special monitoring near chrome platers

Hexavalent Chrome Monitoring u Two weeks - December, 2001 u Six sites near two chrome platers u Unexpectedly high hexavalent chrome levels u Sources unclear

Summary of Ambient Air Monitoring Results - Dec

ARB/San Diego District Response u Immediate notification to community and public officials u Resumed monitoring around two chrome platers u Surprise inspections at facilities u Searched for other potential sources u Working Group formed by local County Supervisor

Follow-up Chromium Monitoring u Began February 5th u Same six sites as December study u Monitoring inside facility u Source Testing

Hexavalent Chrome Data (February) *Designated as a 12 Hour sample but ran 24 Hours LOD 24 Hr - 0.2ng/m 3 LOD 12 Hour ng/m 3 LOD 8 hours ng/m 3

Hexavalent Chrome Concentrations * MPIEXT samples from 2/5-3/11 are 8 hour samples. 3/12 to current - samples are 12 hours

Hexavalent Chrome Ratios

Local Actions u County investigated Master Plating for hazardous waste violations u Obtained temporary restraining order for the plating activities u Court ordered air monitoring during plating shut down  City investigating alternatives for relocating Master Plating

Hexavalent Chrome Concentrations (after shutdown)

Case Study Findings u Impacts are localized u High degree of confidence hexavalent chrome levels at residence are associated with Master Plating activities u Master Plating produces fugitive hexavalent chrome emissions with activities other than plating u Possible hazardous waste issues

Lessons Learned u Regional monitors may not pick up localized hot spots u Combination of modeling, inventory, and monitoring needed when looking at local impacts u Statewide air toxic control measure for chrome platers may need to be revisited