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<br />Any other measures deemed <br />acceptable to the City of <br />Santa Ana that will attain the <br />45-dBA CNEL interior noise <br />level. <br />All construction equipment During Building/Planning <br />shall be properly maintained Construction Agency <br />and tuned to minimize noise <br />emISSIons, <br />All equipment shall be fitted During Building/Planning <br />with properly operating Construction Agency <br />mufflers and air intake <br />silencers no less efficient <br />than those originally <br />installed, <br />The pile-driving equipment During Building/Planning <br />shall be enclosed on all sides Construction Agency <br />with an acoustical blanket <br />barrier that provides a <br />minimum sound transmission <br />class (STC) rating of 30. The <br />height of the blanketed <br />enclosure shall be at least 20 <br />feet tall. With the exception <br />of ingress/egress, there shall <br />be no openings or gaps in the <br />enclosure and ingress/egress <br />points are to remain closed <br />during pile driving activities. <br />All noise-producing <br />equipment shall be located no <br />closer than 6 feet from the <br />blanket barrier, <br />All stationary noise sources During Building/Planning <br />(e.g., generators and Construction Agency <br />compressors) and servicing <br />of equipment shall be located <br />as far from extemalland uses <br />as is feasible, <br />The name and telephone During Building/Planning <br /> <br />9 <br /> <br />75C-147 <br />