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Article 6: Development Standards 267 <br /> Section 6.4: Performance Standards <br /> (4) The values stated in Tables 6.4.4.13 &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 /> A Commercial, Industrial, and Conditional Districts <br /> (1) No permitted Principal Use, Special Use or Accessory Use in LC-1, O/RM, El, or <br /> 1-1 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, or Accessory Use in <br /> the NC-2, CC-3, GC-4, EC-5, 1-2, 1-3, and AS, and CZ-Conditional <br /> Districtsdistriets may generate any ground transmitted vibration in excess of the <br /> limits set forth in the following table: <br /> TABLE 6.4.4.13: COMMERCIAL, INDUSTRIAL,AND CONDITIONAL DISTRICTS MAXIMUM <br /> PERMITTED GROUND-TRANSMITTED VIBRATION <br /> ZONING OF ADJACENT MAXIMUM PARTICLE VELOCITY OR <br /> LAND USE ZONING OF DEVELOPMENT <br /> SECOND)NC-2& 1-2 [1] 0.02 <br /> Residential CC-3, GC-4, EC-5, 1-3,AS, & <br /> GZ—Conditional 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 /> GZ—Conditional 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 /> [21 Measurements taken at the zoning district boundaries <br /> (C) Economic Development Zoning Districts <br /> (1) Maximum Permitted Ground Transmitted Vibration <br /> TABLE 6.4.4.C: MAXIMUM PERMITTED GROUND-TRANSMITTED VIBRATION <br /> RECEIVING LAND USE MAXIMUM PARTICLE VELOCITY FOR GENERATING LAND <br /> USE(INCHES PER • ,Residential development 0.02F-- <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 /> Orange County, North Carolina—Unified Development Ordinance Page 6-13 <br />