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<br />Euclid Street Zone Change/Subdivision ER 2005-138 <br />, <br />Nitrogen Oxides 100 2.5 55 <br />Particulate <br />Matter 150 6.75 150 <br />Long-term Operational Air Quality Impacts <br /> <br />The proposed proj ect would involve the development of 2 <br />single- family dwelling units. The primary source of <br />operational emissions would be generated by vehicle travel <br />to and from the project site. A relatively minor amount of <br />gaseous emissions would also occur from natural gas and <br />electricity usage. <br /> <br />Using the South Coast Air Quality Management District CEQA <br />Air Quality Handbook as guideline, the threshold for <br />potentially significant long-term alr quality impacts would <br />involve the development of 166 single-family dwelling <br />uni ts . The proposed proj ect would involve the development <br />two single family residences and would be considerably less <br />than the threshold of significance for long-term air <br />quality impacts outlined in the CEQA Air Quality Handbook. <br />Addi tionally, the proposed proj ect is consistent with the <br />General Plan and the long emissions generated by the <br />proj ect are accounted for in the City's General Plan Land <br />Use Element EIR. <br /> <br />Short-term constructed Related Air Quality Impacts <br /> <br />Construction operations associated with the proposed <br />project could potentially result ln short-term increases in <br />particulate mater, and to a lesser degree increases in <br />carbon monoxide and ozone. Peak day construction emissions <br />for most pollutants would occur during the clearing, <br />excavation and grading phases. Using the South Coast Air <br />Quality Management District CEQA Air Quality Handbook as a <br />guideline, the threshold for potentially significant short- <br />term air quality impacts would involve the grading of <br />1,309,000 square feet of area. Assuming grading of the <br />entire proj ect site, approximately 43,200 square feet of <br />area would be graded. The proposed grading would be <br />considerably less than the threshold of significance <br />established by the CEQA Air Quality Handbook. To minimize <br />dust impacts during construction, the proposed project <br />would be required to comply with SCAQMD Fugitive Dust Rule <br />403 to suppress dust generated by construction operations. <br /> <br />5 <br /> <br />75A-24 <br />