13 - Laserfiche WebLink

Piurlicn Drive Turnout and Pipeline Project Errvirorrmer:tul Checklist b, c, and d) Less than Significant. Construction activities, by nature will produce air quality impacts which commonly require mitigation. "l~he Bay Area Air Basin, including the Alameda County and the "I'ri-Valley area, is currently designated as a federal and State non- attainment area for ozone, the major component for smog and for particulates (PM~.S and PMi~~). Particulate material includes dust, dirt, soot, smoke and liquid droplets directly emitted into the air by sources such as factories, power plants, cars, construction activity, fires, and natural windblown dust. Construction vehicle/equipment exhaust contains reactive organic gasses (ROG) and nitrogen oxides (NOS) which are of concern because they are precursors to ozone and add to the regional ozone problem. Intermittent construction activities are expected to last approximately six months. Construction activities will result in minor, temporary emissions of diesel and gasoline engine combustion emissions (ozone precursors) and small amounts of localized increases in fugitive dust from construction site preparation such as removal of road surfaces within the construction work area, excavation, trenching and limited grading. The project will temporarily increase ozone, NOX, PM,.S and PMio concentrations, and may temporarily expose sensitive receptors (i.e. nearby businesses and residences) to pollutant concentrations. This increase and exposure is not considered substantial given the open nature of the area, minimal amount of surface disturbance, and duration of construction activities. However, this impact is still considered significant because of the nonattainment stahts of the area. Project Measures AIR-1: Equipment Exhaust Control and AIR-2: Dust Control will reduce short term air quality impacts to less-than-significant levels. AIR-1 is defined by BAAQMD (adopted from BAAQMD's CEQA Guidelines for Assessing the Air Quality Impact of Projects and Plans for PMi~> (1991)) as sufficient to reduce impacts of vehicle exhaust from constrnction to less than significant. Project Measure AIR-2 (adopted from BAAQMD's CEQA Guidelines for Assessing the Air Quality Impact of Projects and Plans for PMiu (1991)) will reduce impacts from dust generated during construction to less than significant. bong-term operational emissions would be generated by mobile sources as a result of vehicles traveling to and from the project site daily for normal inspection and maintenance activities. However, the relatively small amount of traffic generated (1 to 2 trips a day), does not represent a significant increase. The proposed project will not conflict with, or obstruct, the implementation of the applicable air quality plans since the increase will be minimal. Therefore, this impact would be less than significant. e) Less than signitcant. Odors created during construction will be limited to exhaust from heavy equipment and materials, which is not generally considered objectionable. Operation and maintenance of the project facilities will not result in production of objectionable odors. Therefore, this impact would be a less than significant. City of Pleasanton Z1 Winzler & Kelly Dratt Initial Study/R~oposcd Negative Dcclarahon August 2006 04263501