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E ' C) r RE�CC/VEp San Joaquin Valley JAN 3 � Zl?p Air Pollution Control District 6 Gorrlmunrty 1)evel6pment Dept.r P January 30, 2006 f —� Reference No.:,C20060141 Ms. Kathy.Allen. C� San Joaquin County Community Dev:.Dept. 1810 last Hazelton Avenue Stockton, CA 95205 Subject: PA-0500729—Olivera Family Limited Partner Poultry Farm Dear Ms.Allen, The San Joaquin Valley Unified Air Pollution Control District (District) has previously commented on this project (District Reference Number C200501491, mailed to you on November 16, 2005) and offers the following comments in addition to previous comments: This project will contribute to the overall decline in air quality due to increased traffic and ongoing operational emissions. This project may generate significant air emissions and it will reduce the air quality in the San Joaquin Valley. The project will make it more difficult to meet mandated emission reductions and air quality standards. A concerted effort should be made to reduce project-related emissions as outlined below: Y This project is currently in process for air permits from the District (District project number N105400, permit number N7332-1, 2, 3). Preliminary analysis indicates that this project will generate significant PM10 emissions. In addition, this project maybe a significant source of Hazardous Air Pollutants (HAPS). As such, a Negative Declaration may not be appropriate and the District recommends that San Joaquin County prepare an Air Quality Impact Assessment (AQIA), including a Health Risk Assessment (HRA) to rmi potential impacts. determine the potent a mp cts. An HRA should include a discussion of the toxic risk associated with the proposed project, including project equipment, operations, and vehicles. The GAMAQI defines the significant levels for toxic impacts as a cancer risk greater than 10 in a million and/or a hazard index (HI) of 1.0 or greater for chronic non- carcinoginic or acute risks. The project consultant should contact the District to verify the appropriate thresholds to use, as well as review the proposed modeling approach before modeling begins. For more information on hazardous air pollutants (HAPS) analyses, please contact Leland Villalvazo, at (559) 230- 6000, or hramodeler. valle air.or . District staff is available to meet with you and/or the applicant to further discuss the regulatory requirements that are associated with this project. if you have any questions or require further information, please call me at (559) 230-5818 and provide the reference number at the top of this letter, or our Permit Services Division at(559)230-6000 and reference the permit number listed above. Sincerely, Jessica R. Willis Air Quality Specialist Central Region C: file