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AIR QUALITY/ODORS <br /> Environmental Setting <br /> Climatic Setting <br /> The climatic conditions at the proposed project site are character <br /> ized by hot, dry summers and mild, wet winters. Maximum temperature <br /> average around 950F in July while minimum monthly temperatures averag <br /> around 350F during January. Precipitation, in the form of rainfall , <br /> averages approximately 14 inches annually. The majority of this rainfall <br /> (roughly 95 percent) occurs between October and April . <br /> The winds in the valley generally travel along the northwest to <br /> southeast axis of the valley. Marine air entering through the Sani <br /> Francisco Bay area results in the predominant northwesterly (i .e. , from <br /> the northwest) winds. During the winter, when the on-shore flow is not a <br /> strong driving mechanism, winds in the valley tend to be more southerly <br /> in nature. Dense ground-level fog also occurs frequently during the <br /> winter. <br /> Regulatory Setting <br /> The project would be located within the San Joaquin Valley Air <br /> Basin under the jurisdiction of the San Joaquin County Air Pollution <br /> Control District (SJCAPCD) and would be required to comply with all <br /> applicable rules and regulations administered by the SJCAPCD. As a new <br /> stationary source, the proposed project would be required to obtain an <br /> Authority to Construct and a Permit to Operate in accordance with the <br /> SJCAPCD New Source Review rule. <br /> Because the proposed project would be a source of toxic air contam- <br /> inants, a health risk assessment of the project's impacts would also be <br /> required as part of the permitting process. The SJCAPCD requires that <br /> the following three analyses be performed as part of the risk assessment. <br /> • Cancer risk analysis. The long-term health effects of emitted <br /> carcinogens must be estimated using modeling results and unit <br /> 3-55 <br /> I01-30.R5 4/I3/89 <br />