901 W Civic Center Dr - Misc. Permit (2)

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Emergency machinery, vehicle or work shall mean any machinery, vehicle or work used, employed or performed in an effort to protect, provide or restore safe conditions in the community or for the citizenry, or work by private or public utilities when restoring utility service. Fixed noise source shall mean a stationary device which creates sounds while fixed or motionless, including, but not limited to, industrial and commercial machinery and equipment, pumps, fans, compressoR, generators, air conditioners and refrigeration equipment. Grading shall mean any excavating or filling of earth material, or any combination thereof, conducted at a site to prepare said site for construction or other improvements thereon. lmpact noise shall mean the noise produced by the collision of one mass which may be either in motion or at rest. Mobile noise source shall mean any noise source other than a fixed noise source. Noise level shall mean the "A" weighted sound pressure level in decibels obtained by using a sound level meter at slow response with a reference pressure of twenty (20) micronewtons per square meter. The unit of measurement shall be designated as dB (A). Person shall mean a person, firm, association, copartnership, joint venture, corporation or any entity, public or private in nature. Residential property shall mean a parcel of real property which is developed and used either in part or in whole for residential purposes, other than transient uses such as hotels and motels. Simple tone noise shall mean a noise characterized by a predominant frequency or frequencies so that other frequencies cannot be readily distinguished. Sound level meter shall mean an instrument meeting American National Standard lnstitute's Standard 51.4-1971 for Type 1 or Type 2 sound level meters or an instrument and the associated recording and analyzing equipment which will provide equivalent data. Sound pressure level of a sound, in decibels, shall mean twenty (20) times the logarithm to the base ten (10) ofthe ratio of the pressure of the sound to a reference pressure, which reference pressure shall be explicitly stated. (Ord. No. N5-1441, 5 r, 8-21-781 Sec. 18-310. - Noise level measurement criteria. Any noise level measurements made pursuant to the provisions of this article shall be performed using a sound level meter as defined in section 18-309. (Ord. No. NS-1441,5 l,8-27-78\ Sec. 1"8-311. - Designated noise zone. The entire City of Santa Ana is hereby designated as "Noise Zone 1." (Ord. No. NS-1441, $ L, 8-21-78\