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City of Redwood City, Public Works Division Initial Study & Mitigated Negative Declaration <br />Document Date: October 15, 2015 <br />Revision Date: January 25, 2016 Page 14 Blankinship & Associates, Inc. <br /> <br />3.3 Air Quality <br /> <br /> <br />Potentially <br />Significant <br />Impact <br />Potentially <br />Significant <br />Unless <br />Mitigation <br />Incorporated <br />Less Than <br />Significant <br />Impact No Impact <br /> <br />Would the Project: <br /> <br />a) Conflict with or obstruct implementation <br />of the applicable air quality plan? <br /> <br />b) Violate any air quality standard or <br />contribute substantially to an existing or <br />projected air quality violation? <br /> <br /> <br />c) Result in a cumulatively considerable net <br />increase of any criteria pollutant for <br />which the project region is non- <br />attainment under an applicable federal <br />and state ambient air quality standard <br />(including releasing emissions which <br />exceed quantitative thresholds for ozone <br />precursors)? <br /> <br /> <br />d) Expose sensitive receptors to substantial <br />pollutant concentrations? <br /> <br /> <br />e) Create objectionable odors affecting a <br />substantial number of people? <br /> <br />Discussion <br /> <br />Items a) & b): No Impact. The Project requires the use of pick-up trucks or other service vehicles for <br />purposes of transporting algaecides and/or aquatic herbicides to locations where they are <br />needed. A boat or pick-up truck is used to make applications of algaecides and/or aquatic <br />herbicides. Pick-up trucks are also used for purposes of site reconnaissance before, during, <br />and after application of aquatic herbicides. Short-term vehicle emissions will be generated <br />during aquatic herbicide application; however, they will be minor and only be applied on an “as- <br />needed” basis throughout the year. To minimize impacts, all equipment will be properly tuned <br />and muffled and unnecessary idling will be minimized. Generally one or two vehicles are used <br />for the transport and application of the herbicide. As needed, the City or contractor may use a <br />small generator or gas-powered pump during the course of application. The City or contractor <br />may also use a boat with a small outboard motor in some locations where application from the <br />banks is not feasible. None of the above vehicles or application equipment is expected to <br />conflict with air quality plans or violate air quality standards. <br /> <br />The City is located in the San Francisco Bay Area Air Basin, which includes the following <br />counties: Napa, W estern Solano, Contra Costa, Alameda, Santa Clara, San Mateo, San <br />Francisco, Marin, and Southern Sonoma. The application of aquatic herbicides does not <br />conflict with any San Francisco Bay Area Air Quality Management Plans, violate any air <br />6.3.A. - Page 22