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Article 6: Development Standaghis <br /> Section 6.4: Performance Standards <br /> (4) The values stated in Tables 6.4.4.E & 6.4.4.0 may be multiplied by 2 for impact <br /> vibrations. <br /> (5) Vibrations 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 /> (6) Vibration levels for the extraction of earth products and landfills shall be as set <br /> forth in Sections 5.11 and 5.12. <br /> (B) Commercial, Industrial, and Conditional Districts <br /> (1) No permitted Principal Use, Special Use or Accessory Use in LC-1,G4 , El, <br /> or I-1 districts may generate transmitted vibration that is perceptible to the human <br /> sense of touch, measured at the outside boundary of the structure occupied by <br /> the use generating the vibration. <br /> (2) No permitted Principal Use, Special Use, Conditional Use or Accessory Use in <br /> the NC-2, CC-3, GC-4, EC-5, 1-2, 1-3, and AS, and CZ districts may generate any <br /> ground transmitted vibration in excess of the limits set forth in the following table: <br /> TABLE 6.4.4.B: COMMERCIAL, INDUSTRIAL,AND CONDITIONAL DISTRICTS MAXIMUM 1M <br /> PERMITTED GROUND-TRANSMITTED VIBRATION <br /> ZONING OF ADJACENT MAXIMUM PARTICLE VELOCITY FOR <br /> LAND USE ZONING OF DEVELOPMENT SITE GENERATING LAND USE(INCHES PER <br /> SECOND) <br /> NC-2 & I-2 [1] 0.02 <br /> Residential CC-3, GC-4, EC-5, 1-3,AS, & <br /> CZ Districts 2 0.20 <br /> NC-2 & 1-2 [1] 0.10 <br /> Non-residential CC-3, GC-4, EC-5, 1-3,AS, & <br /> CZ Districts 2 0.20 <br /> NOTES: <br /> [1] Measurements taken at the boundaries of the zoning district lot containing the use generating <br /> the vibrations. <br /> 2 Measurements taken at the zonin• district boundaries <br /> (C) Economic Development Zoning Districts <br /> (1) Maximum Permitted Ground Transmitted Vibration <br /> . . . . MAXIMU - NSMITTED VIBRATION <br /> RECEIVING LAND USE MAXIMUM PARTICLE VELOCITY FOR GENERATING LAND <br /> USE(INCHES PER SECOND) <br /> Residential development 0.02 <br /> Non-residential development 0.10 <br /> (2) Mitigation <br /> (a) Design features used to mitigate vibration must be clearly identified on <br /> the site plan. <br /> (b) Applicants must provide documentation of the source and level of <br /> vibration, and the specific manner in which the design feature will reduce <br /> vibration to acceptable levels. <br /> Orange County, North Carolina—Unified Development Ordinance Page 6-12 <br />