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San .Joaquin Valley <br /> Air Pollution Control District <br /> f <br /> January 28, 2002 <br /> ,, <br /> eel <br /> Leanne Mueller <br /> San Joaquin County <br /> Community Development Department <br /> Development Services Division <br /> 1810 East Hazelton Avenue <br /> Stockton, CA 95205 <br /> SUBJECT: QX-01-2 <br /> Dear Ms Mueller: <br /> The San Joaquin Valley Air Pollution Control District (District) has reviewed the <br /> proposed project and offers the following comments: <br /> The San Joaquin Valley's air quality has been designated nonattainment by the EPA <br /> and by the Air Resources Board (ARB)for 03 (ozone) and PM-10 (fine particulate <br /> matter, dust). The Federal Clean Air Act (CAA) and the California Clean Air Act require <br /> areas that are designated nonattainment to reduce emissions until standards are met. <br /> Based upon the information received the District is unable to determine the potential <br /> impacts from this operation. However, based upon the size and amount of material to <br /> be removed from the site, it seems likely that the project will exceed the Districts levels <br /> of significant for both NOx (10 tons/year of Nitrogen Oxides) and VOC (10 tons/year of <br /> Volatile Organic Compounds). If after further review this is the case than an EIR would <br /> need to be completed addressing air quality issues. <br /> Additionally, the California Air Resources Board (CARB) has identified emissions <br /> produced by diesel powered equipment as a toxic air contaminant. CARB has issued a <br /> report entitled Risk Reduction Plan to Reduce Particulate Matter Emissions from <br /> Diesel-Fueled Engines and Vehicles (October 2000). Appendix VII of the report <br /> provides several risk characterization scenarios, which may serve as a starting point for <br /> estimating risks from diesel engine emissions. The District will work with applicants to <br /> review appropriate methodology for estimating toxic risk. <br /> The construction/operational phase of this project can generate emissions from the <br /> movement of soil, use of heavy equipment, bulk materials handling, asphalt paving and <br /> other related activities. As a result, this project is subject to District Regulation VIII <br /> (Fugitive Dust Prohibitions). The purpose of Regulation VIII is to reduce the amount of <br /> fine particulate matter (PM-10) entrained into the ambient air from man-made sources. <br /> David L. Crow <br /> Executive Director/Air Pollution Control Officer <br /> Northern Region Office Central Region Office Southern Region Office <br /> 4230 Kiernan Avenue, Suite 130 1990 East Gettysburg Avenue 2700 M Street, Suite 275 <br /> Modesto, CA 95356-9322 Fresno, CA 93726-0244 Bakersfield, CA 93301-2373 <br /> (209) 557-6400 • FAX (209) 557-6475 (559) 230-6000 • FAX (559) 230-6061 (661) 326-6900 • FAX (661) 326-6985 <br /> www.valleyair.org <br />