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ISpecific Recommendations <br />The following mitigation measures wave been recommended for in- <br />corporation in the project to minimize noise impacts: <br />I Construction activities will take place only on the hours <br />specified in the City of Santa Ana 'Noise Control Ordinance <br />to reduce noise impacts during more sensitive time periods. <br />2. All construction equipment, faxed or mobile, operated within <br />1040 feet of a dwelling shall be equipped with properly <br />operating and maintained muffler exhaust systems. - <br />3. Stationary equipment shall be placed such that emitted noise <br />is directed away from sensitive noise receivers such as <br />residential areas. <br />4. Stockpiling and vehicle staging areas shall be located as <br />far as practical from occupied dwellings. <br />5. Every effort should be made to create the greatest distance <br />between noise sources and receptors during construction. <br />6. The noisiest construction operations should be arranged to <br />occur together in the construction program to avoid contin- <br />uing periods of greater annoyance. <br />The following mitigation measures are suggested for consideration <br />and implementation if feasible. <br />1. Any residential noise barriers that are removed in conjunc- <br />tion with the project should be replaced with barriers at <br />least 6 feet high. <br />2. For these dwellings on corner lots with access to cross <br />streets which experience exterior noise impacts, a six- -foot <br />block wall could be constructed at the right -of -way to a <br />point 25 feet from the extension of the intersecting perpen- <br />dicular curb line of the cross street to reduce exterior <br />noise impacts. <br />3. Construction of sound barriers in front of the residences <br />fronting on Bristol Street would restrict pedestrian or <br />vehicular access and consequently are not proposed. <br />4. The construction of sound barriers adjacent to school play- <br />grounds and athletic fields would meet federal exterior <br />noise standards for outdoor activity areas. <br />5. Future design year noise levels could be reduced to meet <br />federal criteria if a six -foot noise wall is constructed to <br />shield those rear yard areas of units with side yards and <br />rear yards facing Bristol Street as shown in the Appendix. <br />4 -26 <br />