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P.V. =6.28XFXD <br />P.V. = Particle velocity in inches per second <br />F = Vibration frequency, cycles per second <br />D = Single amplitude d~placement of the <br /> vibration, inches <br /> <br />The maximum velocity shall be the sum of the three (3) components <br />recorded. <br /> <br />D. The values stated in Table B may be mul~plied by two (2) for impact <br />vibrations, i.e., discrete vibration pulsa~ons not exceeding one (1) <br />second between pulses. <br /> <br />E. Vibrations resulting from temporary construcldon or other temporary <br />acl~viry that occurs between 7:00 am and 7:00 pm shall be exempt from <br />the requirements of this subsection. <br /> <br />~. 2]-8 Air Pol]uldon: <br /> <br />A. Any Permitted Principal Use, Conditional Use or Accessory Use that <br />emits any "air contaminant", as defined in G.S. 143-213, shall comply <br />with applicable State of North Carolina standards concerning air <br />pollution, as set forth in Arl~cle 2lB of Chapter 143 of the North Carolina <br />General Statutes. <br /> <br /> B. No Zoning Compliance Permit or Building Permit shall be issued with <br />'respect to any development covered (a) until the state Division of <br />Environmenta] Management has cer~fied to the Zoning Official that the <br />appropriate State Perml~ have been received by the applicant (as <br />provided in G.S. 143-215.108) or that the applicant will be eligible to <br />receive such' permits' and that the development is otherwise in compliance <br />with app]dcable air pollul~on control regulations. <br /> <br />~,2]-9 Disposal Of Ljc[uid Wastes: <br /> <br />A. No permitted use in any district shall discharge any waste contrary <br />to the provisions of G.S. 130-]60. (Sanitary Sewage Disposal and County <br />Ordinances ). <br /> <br />B. No Permitted Principal Use, Conditional Use or Accessory Use in any <br />district shall discharge into the Rocky River sewage treatraent faclliUes <br />any waste that cannot be adequately %reared by biological means. <br /> <br />5.21-10 Aluminum Recvclina Collection Centers: <br /> <br /> Aluminum recycling collection centers that operate within Cabarrus <br />County's jurisdiction shall meet the following standards: <br /> <br />A. Collection centers shall purchase only aluminum cans and aluminum <br />materials. <br /> <br />B. No outside storage of aluminum products will be permitted. <br /> <br />62 <br /> <br /> <br />