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4. Consideration will be given to the provision of convenient bus shelters <br />and bus turnouts along Bristol Street to encourage the use of public <br />transportation. <br />Additional mitigation measures offered for consideration and incorporation in <br />the project if found to be feasible: <br />S. The use of energy efficient lighting along Bristol Street (low pressure <br />sodium vapor lights) will be considered to reduce emissions at the <br />power plant serving the area. (AQMP control measure NIL) <br />6. Traffic signals along Bristol Street will continue to be synchronized. <br />(AQMP control measures K2.) <br />7. Construction activities will be halted during Stage One and Stage Two <br />smog alerts. <br />I. NOISE LEVELS <br />A detailed assessment of potential noise impacts was prepared for the project, <br />under separate cover, by Endo Engineering. The following discussion is based <br />on that study, which is available for public review at the offices of the City of <br />Santa Ana Public Services Agency. <br />^., <br />1� <br />Short-term increases in local noise levels will occur during construction of the ^ <br />proposed street improvements, which is expected to continue for approximately <br />six months. Noise impacts will result from the operation of construction <br />equipment and from traffic to and from the project area by the construction , <br />crew. Construction activities will be limited to those hours specified in the <br />City of Santa Ana Noise Ordinance and will be controlled to minimize <br />nuisance noise in accordance with noise control strategies developed by <br />Caltrans. <br />Future noise levels along Bristol Street were projected using the FHWA RD- <br />77.108 Highway Traffic Noise Prediction Model. Modeling results indicate <br />that future noise levels would be no more than one dBA higher with the <br />project, as compared to levels without the project improvements (noise level <br />changes of less than 3 dBA are normally inaudible to the human ear). The <br />relationship of these projections to federal and City of Santa Ana noise criteria <br />is discussed in the following pages. <br />A field review of the sensitive receptors located adjacent to Bristol Street ` <br />within the project area indicates exceedances of federal exterior noise criteria <br />IV -20 <br />75B -155 <br />