Res10 P-2095 - Laserfiche WebLink

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3. AIR QUALITY. (Where available,the significance criteria established by Less than the applicable air quality management or air pollution control district may Significant With Less Than be relied upon to make the following determinations.) Significant Mitigation Significant No Would the project: Impact Incorporated Impact Impact (a) Conflict with or obstruct implementation of the applicable air quality plan? ❑ ❑ a ❑ (b) Violate any air quality standard or contribute substantially to an existing or projected air quality violation? (c) Result in a cumulatively considerable net increase of any criteria pollutant for which the project region is non-attainment under an applicable federal or ❑ ® ❑ state ambient air quality standard(including releasing emissions which exceed quantitative thresholds for ozone precursors)? (d) Expose sensitive receptors to substantial pollutant concentrations? (e) Create objectionable odors affecting a substantial number of people? Impact Analysis: a-d) The demolition of existing structures and the installation of new structures at the Multi-Agency Maritime Facility site is expected to occur over a three-month period,with the major demolition activity occurring within a 2 to 3-day span. Demolition may generate particulate dust and other criteria pollutants over the short term. A portion of these emissions would likely result from the demolition crane operation,mounted pile driver,crane transport of demolition materials,and truck loading of debris at the staging area. Other emissions that would be generated from construction activities include combustion emissions of criteria air pollutants(reactive organic gases [ROG],nitrogen oxides[NOx,], carbon monoxide [CO],sulfur oxides [SOx],and PM-10)from operation of construction equipment and worker vehicles. The project may also result in potential increased short-term diesel particulate emissions and other toxic air contaminants(TACs)particularly as associated with truck activity. It is anticipated that 10-15 dump trucks would be required to remove demolition debris from the project site,but the vast majority of the project's truck movement would be short trips to the scrapping facility for concrete and steel,both facilities located within the Port of Redwood City(Cemex and Sims metal). Emissions from implementation of the project will be limited to short-term demolition and construction activities at the project site. NOx emissions and Diesel PM would very likely exceed the BAAQMD thresholds for daily emissions,at the localized site during demolition,pile driving and gangway/floating dock installation,but because of the relatively short-duration of these activities,it would not contribute substantially to the entire emission profile of the local air basin. In addition,the proposed construction equipment used will meet current air emission standards. The project,therefore,will not result in substantial air emissions or significantly contribute to the deterioration of ambient air quality in the City of Redwood City or San Francisco Bay. The proposed project also has the potential during demolition and the transport of materials to emit small quantities of greenhouse gas emissions. Greenhouse gases would be emitted primarily by dump trucks and other mobile equipment,and cranes. As of the date of this analysis,neither the BAAQMD, California Air Resources Board,nor any federal agency has implemented an emission rate criterion for CO2 emissions for the purpose of identifying significant contribution to global climate change for individual projects. Because of the relative small size,short-term construction period and limited staging of proposed construction equiment, it is anticipated that the project's temporary contribution to global greenhouse gas emmissions would would be small and less-than-sifnificant. Port of Redwood City Multi-Agency Maritime Facility 16 February 2010 Initial Study