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Article 6: Development Standards 254 <br /> Section 6.4: Performance Standards <br /> 1) Sound levels shall be measured with an A-weighted filter, constructed <br /> accordance with the specifications of the American National Stand s Institute, <br /> hich automatically takes account of the varying effect on the h an ear of <br /> di ent pitches. <br /> (2) All meas ements shall be expressed in dB(A)to refle he use of this A- <br /> weighted filt <br /> (3) Impact Noises <br /> (a) Impact noises a ounds that cur intermittently rather than <br /> continuously. <br /> (b) Impact noises genera b ources that do not operate more than one <br /> minute in any one ur period a permissible up to a level of 10dbA in <br /> excess of the f' res listed in Tab .4.3.B. This exception shall not <br /> apply from 0 pm to 7:00 am when t adjacent lot is used or zoned for <br /> residen ' purposes. <br /> Z(4) se <br /> impact noise shall be measured using the fa response of the <br /> d level meter. <br /> resulting from temporary construction or other tempor activity that <br /> en 7:00 am and 7:00 pm shall be exempt from the requir ents of <br /> on. <br /> for the extraction of earth products and landfills shall be as set forth <br /> in Sections 5.11 and 5.12. <br /> (B) Commercial, Industrial, and Conditional Zoning Districts <br /> (1) Within the LC-1, O/RM, El, or 1-1 district, no permitted Principal Use, Special Use <br /> or Accessory Use shall generate noise that tends to have an annoying or <br /> disruptive effect upon uses located outside the immediate space occupied by that <br /> use. <br /> (2) The following table establishes the maximum permissible noise levels for <br /> permitted uses, special uses, GenditiGRal use-S and accessory uses in the NC-2, <br /> CC-3, GC-4, EC-5, AS, 1-2, 1-3, and GZ—CD districts: <br /> COMMERCIAL,TABLE 6.4.3.13: • - <br /> - <br /> MAXIMUM PERMITTED <br /> UND LEVELS <br /> ZONING OF ADJACENT NOISE LEVEL LIMITS[DBA]FOR GENERATING LAND <br /> LOT OR TYPE OF USE ZONING OF DEVELOPMENT SITE USE <br /> IF CONDITIONAL OR <br /> "OTHER"DISTRICT 7:00 PM TO 7:00 AM 7:00 AM TO 7:00 PM <br /> NC-2, 1-2 [1] 50 60 <br /> Residential CC-3, GC-4, EC-5, <br /> 1-3,AS,GZ-Conditional 50 60 <br /> Districts[2] <br /> NC-2, 1-2 [1] 60 65 <br /> Commercial CC-3, GC-4, EC-5, <br /> 1-3,AS,GZ-Conditional 65 70 <br /> Districts[2] <br /> NC-2, 1-2 [1] 65 70 <br /> Industrial CC-3, GC-4, EC-5, <br /> 1-3,AS,GZ—Conditional 70 75 <br /> Districts 2 <br /> NOTES: <br /> [1] Measurements shall be taken at the boundary line of the zoning lot. <br /> [21 Measurements shall be taken at the boundary line of the zoning district. <br /> Orange County, North Carolina—Unified Development Ordinance Page 6-11 <br />