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LSA ASSOCIATES. INC. CEQA INITIAL STUDY/MITIOATED NEGATIVE DECLARATION MARCH 2011 PREDA STREET PIPE BRIDGES UPGRADE SAN LEANDRO. CALIFORNIA • Sweep streets daily (with water sweepers) if visible soil material is carried onto adjacent public streets; • Apply non -toxic soil stabilizers to inactive construction areas; • Enclose, cover, water twice daily, or apply non -toxic soil binders to exposed stockpiles (i.e., dirt, sand); • Limit traffic speeds on unpaved roads to 15 mph; • Install sandbags or other erosion control measures to prevent silt runoff to public roadways; • Replant vegetation in disturbed areas as quickly as possible; • Install wheel washers for all exiting trucks, or wash off the tires or tracks of all trucks and equipment leaving the site; and • Suspend excavation and grading activity when winds exceed 25 mph. 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)? Less Than Significant Impact. As described above in Section 111(b), the proposed project would result in increases in air pollutants during construction activities. These increases would be short- term and minimal, and would not result in a cumulatively considerable net increase of any air pollutants. d) Expose sensitive receptors to substantial pollutant concentrations? Less Than Significant with Mitigation Incorporated. Sensitive receptors in the project area consist primarily of residences to the south, west, and north of the project site. Construction of the proposed project may expose surrounding land uses to airborne particulates and fugitive dust, as well as a small quantity of pollutants associated with the use of construction equipment (e.g., diesel - fueled vehicles and equipment). Implementation of Mitigation Measure AIR -1, described above, would reduce construction - related emissions to a less - than - significant level. As discussed in Section III(b), the proposed project would not result in any long -term air quality impacts. Therefore, nearby sensitive receptors would not be exposed to substantial pollutant concentrations. e) Create objectionable odors affecting a substantial number of people? Less Than Significant Impact. During project construction, emissions from diesel -driven equipment and vehicles may result in odors on the project site and immediate vicinity. However, construction is short-term in nature and these emissions would cease to occur after construction is completed. Long -term operation of the proposed project would not generate objectionable odors. In addition, odors from construction equipment and vehicles on the project site would be dispersed quickly and would not likely subject sensitive receptors to objectionable odors. Therefore, no significant impacts related to objectionable odors would result from the proposed project. P:.EGI080fCEQA\PredaFINAL IS- MND.doc 103/28111) 17