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<br />Construction operations associated with the proposed project <br />could potentially result in short-term increases in particulate <br />mater, and to a lesser degree increases in carbon monoxide and <br />ozone. Peak day construction emissions for most pollutants <br />arising from construction of the proposed proj ect would occur <br />during the grading and demolition phases. <br /> <br />Using the South Coast Air Quality Management District CEQA Air <br />Quality Handbook as a guideline, the threshold for potentially <br />significant short-term air quality impacts would involve the <br />grading of 1,309,000 square feet of area and the demolition of <br />23,214,000 cubic feet of building area. Assuming grading of the <br />whole project site, approximately 43,000 square feet of area <br />would be graded and 85,800 cubic feet of existing structure <br />would be demolished. The amount of grading and demolishing <br />acti vi ties for the proposed proj ect would be considerably less <br />than the threshold of significance established in the CEQA Air <br />Quality Handbook. Less than significant short-term air quality <br />impacts would be associated with the implementation of the <br />proposed project. While the construction related emissions <br />associated with the proposed project would not exceed the <br />thresholds established by the SCAQMD, the emissions could be a <br />nuisance to other existing land uses in the nearby vicinity of <br />the proj ect site. To minimize short-term construction related <br />air impacts within the project area the following project <br />enhancement measure shall be implemented. <br /> <br />Project Enhancement Measure <br /> <br />During construction, the contractor would be required to comply <br />with SCAQMD Fugitive Dust Rule 403 to suppress dust generated by <br />construction operations. To ensure compliance with SCAQMD <br />Fugitive Dust Rule 403, grading plans and demolition plans for <br />the proposed project shall reflect the following notes: <br /> <br />1. All material excavated or graded will be sufficiently <br />watered to prevent excessive amounts of dust. <br /> <br />2. All clearing <br />during period <br />averaged over <br />smog episodes. <br /> <br />and earthwork activities shall cease <br />of high winds (winds greater than 25 mph <br />one hour) or during Stage 1 or Stage 2 <br /> <br />3. Streets surrounding the project site should be cleaned <br />at the end of each day of construction. <br /> <br />5 <br /> <br />31A4~7 <br />