O-1972-101 - Laserfiche WebLink

Browse Search

'--"r . e , strument used in conj~~ction with a so~~~ level meter to measure the sound intensity. ,{in decibels) in each of the eight, (8) octave bands that make up the significant audible range to which the ear is sensitive. An octave band analyzer that meets applicable requirements of the American Standards Association is suitable for use in determining compliance with this ordinanoe. 10. Particulate Matter: Finely divided solid or liquid matter other than water wh1ch 1s released into the atmosphere. 11. Ringlemann Chart: A chart as described by the U. S. Bur- eau of Mines Inrormatlon Circular 6888 and upon which are illustrated graduated shades of gray for use in estimating the light obscuration power of smoke. 12. RinKlemann Number: The next lowest shade number on the Ringlemann Chart wh1ch most nearly corresponds to the light obscuration power of the smoke being measured. For example, smoke opacity lying between No. 1 and No.2 shades of ~&J on the Ringlemann Chart will be measured as Ringlemann No. 1 smoke. 13. Smoke: The visible discharge from a chimney, stack, vent, exhaust, or combustion process which is made up of particulate matter. i 1 l , i 14. Sound Level Meter: A sound level meter is an instrument used to measure the total intensity of a sound (in decibelS) without regard to its frequency composition. A sound level meter that meets applicable requirements of the American Stand- ards Association is suitable for use in determining complianoe with this ordinance. 1S. .' Three-Component Measuring S:rstem: A three-component measuring system is an instrument or complement of instrwnents which records earthborne vibration simultaneously in three mutually perpendicular directions. 16. Toxic and Noxious Matter: Toxic and noxious matter is aI'lJ solid, liquid, or gaseoue matter, including but not limited to gases, vapors, dusts, fumes, and mists which may be detrimental to or endanger the health, safety, comfort, or welfare of per- sons in the vicinity and/or cause injury or damage mpropert1 when present in relatively small amounts. 17. Vibration: Vibration 1s the periodic displacement ot the earth measured in inches. " ' I. ; r: , .:' - ',,~ :1' ~. . .";. <"~ ,-1", '. ,~I , "; ".' :~ ~.~ . '. .' , 'i~ ~.~ .{ , '[ "':r .,j,~" , .. ,'.'~, <i": t ~ '" 1 .' ," ~ :~.. ..,. -23- \ I.:"., ..~ . \,: ~ i ;, ,. , ~ .....