EDD Task Force agenda 100694 - Laserfiche WebLink

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Vibration MAXIMUM PERMITTED GROUND TRANSMITTED VIBRATION Maximum Particle Velocity for Generating Land Use Category Receiving Land Use Category ( lnches /'Secand ) hesidential development of all types CaC2 Nonrezidential development of all types o . io Footnotes ; 1 / The vibration levels set forth in the table above are Stated in terms of particle velocity which may be measured directly with suitable instrumentation or computed on the basis of displacement frequency . When computed , the following formula must be used : P , V . = s .2E x F x D where P . V , = Particle velocity ( inches /second ) F = Vibratian frequency ( cycles /second ) D = Single amplitude displacement of the vibration ( inches ) The instrument used to measure vibrations must be a three component measuring system capable of simultaneous measurement of vibration in three mutually perpandiculw directions . The maximum velocity \v be the sum of the three components recorded . 2J The values Stated in the above table may be multiplied by two ( 2 ) for impact vibrations , e . g . , discrete vibration pulsations not exceeding one ( 1 ) Second between pulses . 31 Vibrations resulting from construction or other temporary activities which occur between the hours of 7 .000 a .m . and 7 : 00 p .m . are exempt from the standards listed in the tables Air pollution For the purpose of these Economic Development District performance standards , each permitted use , special use , and accessory use is required to comply with all applicable rules and standards concerning air pollution as adopted by the N . C . Environmental Management Commission . Each comprehensive site development plan must be accompanied by either : - A written determination from the staff of the Environmental Management Commission that an air quality permit is not required ; OR dIMIN If an air quality permit is required , a complete copy of the permit , including all conditions for reporting and monitoring .