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262 <br /> Article 6: Development Standards <br /> Section 6.4:Performance Standards <br /> (a) Impact noises are sounds that occur intermittently rather than <br /> continuously. <br /> (b) Impact noises generated by sources that do not operate more than one <br /> minute in any one hour period are permissible up to a level of 10dbA in <br /> excess of the figures listed in Table 6.4.3.13.This exception shall not <br /> apply from 7:00 pm to 7:00 am when the adjacent lot is used or zoned for <br /> residential purposes. <br /> (c) The impact noise shall be measured using the fast response of the <br /> sound level meter. <br /> (4) Noise levels resulting from temporary construction or other temporary activity that <br /> occurs between 7:00 am and 7:00 pm shall be exempt from the requirements of <br /> this subsection. <br /> (5) Noise levels for the extraction of earth products and landfills shall be as set forth <br /> in Sections 5.11 and 5.12. <br /> (13) 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,Viand accessory uses in the NC-2, <br /> CC-3,GC-4,EC-5,AS, 1-2, 1-3,and GZ—CD districts: <br /> ABLE 6.4.3.13:COMMERCIAL,INDUSTRIAL,AND CONDITIONAL <br /> CONDITIONALMAXIMUM PERMITTED SOUND LEVELS EM <br /> ZONING OF ADJACENT NOISE LEVEL LIMITS[DBA]FOR GENERATING LAND <br /> LOT OR TYPE OF USE ZONING OF DEVELOPMENT SITE USE <br /> IF OR"OTHER"DISTRICT 7:00 PM TO 7:00 AM 7:00 AM TO 7:00 PM 1-2 Ill 50 60 <br /> Residential CC-3,GC-4,EC-5, <br /> 1-3,AS,SZ-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,CZ-Conditional 65 70 <br /> Districts 2 <br /> NC-2,1-2 1 65 70 <br /> Industrial CC-3,GC-4,EC-5, <br /> I-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 /> (C) Economic Development Zoning Districts <br /> (1) Maximum Permitted Sound Levels <br /> ECONOMIC DEVELOPMENTZONING <br /> �WT MAXIMUM PERMITTED SOUND LEVELS <br /> Orange County,North Carolina-Unified Development Ordinance Page 6-11 <br />