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2007-11-14 CC Packet
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2007-11-14 CC Packet
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<br /> <br /> <br /> <br />. I-hour average: 30 parts per million (ppm); and <br />· 8-hour average: 9 ppm. <br /> <br />Concentrations near or above these levels are most likely to occur near intersections that <br />. have heavy traffic volumes and are severely congested. With the proposed area roadway . <br />improvements, severe congestion problems that could cause air quality problems are not <br />expected to develop at the major intersections near the project. <br /> <br />23.Stationary source air emissions <br /> <br />Describe the type, sources, quantities and compositions of any emissions from <br />stationary sources of air emissions such as boilers, exhaust stacks or fugitive dust <br />sources. Include any hazardous air pollutants (consult EA W Guidelines for a listing) <br />and any greenhouse gases (such as carbon dioxide, methane, nitrous oxide) and <br />ozone-depleting chemicals (chloro-fluorocarbons, hydrofluorocarbons, <br />perfluorocarbons or sulfur hexafluoride). Also describe any proposed pollution <br />prevention techniques and proposed air pollution control devices. Describe the <br />impacts on air quality. <br /> <br />Emissions from structures proposed at the site are not expected to be significant. <br /> <br />24.0dors, noise and dust <br /> <br />Will the project generate odors, noise or dust during construction or during <br />operation? lYes _No <br /> <br />If yes, describe sources, characteristics, duration, quantities or intensity and any <br />proposed measures to mitigate adverse impacts. Also identify locations of nearby <br />sensitive receptors and estimate impacts on them. Discuss potential impacts on <br />human health or quality of life. (Note: fugitive dust generated by operations may be <br />discussed at item 23 instead of here.) <br /> <br />Dust and noise will be generated by equipment and machinery during construction. <br />Odors may also be generated from construction equipment exhaust. Equipment will <br />include trucks, backhoes, graders, compactors, excavators, bobcats, cranes, loaders, <br />compressors, and possibly de-watering pumps. Dust may be controlled by daily cleanup <br />of the construction site; water will be used to wet appropriate surfaces to reduce airborne <br />dust when necessary. Noise and odor impacts from construction equipment will be <br />controlled by ensuring the equipment is properly muffled and in good working condition, <br />and by restricting the hours of operation to daylight hours, or those permitted by local <br />ordinances. <br /> <br />The project proceeds through residential neighborhoods and is adjacent to numerous <br />residential yards. Construction ofthe project is anticipated to occur in phases over a five- <br />year period. Phases of construction in anyone area are expected to be completed over <br />one construction season, approximately seven months (May through November). <br /> <br />21 <br />
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