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2. m o �� Table 2-1 (continued) Summary of Impacts and Mitigation Measures (Applicable to Program and Project-Specific Impacts) c, y Impact Significance Mitigation Measure Significance before Mitigation after Mitigation m noise studies shall be funded by the College Park developers and = approved by SJCCDD before construction. 0 Landscape Maintenance The following measures shall apply to noise-generating activities — associated with landscaping and maintenance of school grounds, neighborhood parks,community parks,and open space. ► On-site landscape maintenance equipment shall be equipped = with properly operating exhaust mufflers and engine shrouds,in d accordance with manufacturers'specifications. For maintenance areas located within 320 feet of noise-sensitive land uses,the operation of on-site landscape maintenance equipment shall be limited to the least noise-sensitive periods of the day,between the hours of 7:00 a.m.and 10:00 p.m. 4.13-3.Noise—Increased Traffic Noise.Traffic from the proposed S Mitigation Measure 4.13.3: Noise—Increased Traffic Noise. LTS project would not result in exceedance of the 65 dBA CNEL traffic The project applicants shall implement the measures identified below. noise threshold or a noticeable(3-dBA or greater)increase in traffic noise at existing noise-sensitive receptors(residential)along Before occupancy of the first residence at College Park,a noise Mountain House Parkway or Byron Road,but would result in a barrier shall be constructed by the College Park developers between noticeable(3-dBA or greater) increase in traffic noise at noise- the five existing residences located on the north side of Grant Line sensitive receptors(residential)along Grant Line Road.A Road between Central Parkway and the Alameda County line significant impact would occur. (Receptor 14 in Figure 4.13.2)and the northern travel lane of Grant Line Road.The noise barriers may consist of a wall,berm,or combination thereof.The exact location,height,and character of the noise barrier shall be determined by a noise consultant approved by the County.The sound barrier shall reduce outdoor noise levels at the center of the front yards of the five existing residences to below 65 dBA WCNEL. If Grant Line Road is widened at this location subsequent to construction of the sound barrier but before removal of the five residences under Specific Plan II,the sound barrier shall be relocated,as required.If the five existing residences are removed under Specific Plan II before occupancy of the first residence under the College Park project,this mitigation measure shall not require Cn implementation.This mitigation shall be funded through fair-share C m payments by the College Park developers. 0 z >