ORD 0309 - Laserfiche WebLink

TABLE X Frequency Pangee Containing Standard Octave Bands in Cycles per Second 20 ....... 300 300 ....... 2,400 Above ....... Octave Band Sound Pressure Level in Decibles re 0.002 dyne/cm2 60 30 If the noise is not smooth and contieuous and is not radiated be- tween the hours of 10 p.m. and 7 a.mo, one or more of the corrections in Table XI shall be appiied to the octave band levels given in Table TABLE Type or Location of Operation Correction ~rCh~r~etez of NoiSe at Decibels 1. Daytime operation only 5 - 2. Noise source operates less than: 207. of any one-hour period, 5 or 5% of any one-hour period 10 3. Noise of ~mpulsive character (hammering) -5 4. Noise of periodic chameter (hum, screech) -5 5. Property located in the following districtsJ not within 500 feet of any R Distr~ct or General Plan Designated R 5 District: C District, or A & I 10 17.109 Vibration. Vibration shall not be permitted if discern- ible without instruments at the above-mentioned test points. 17.110 Odors. Oaorous gases or other odorous matter shall not be readily detectable when diluted one to four volumes of clean air at the test point. Any process which creates any obnoxious odors shall have a secondary safeguard system so that control will be maintained if the primary safeguard system should fail. There is hereby established as a guide in determining such offensive odors Table IIIs "Odor Thresholds," in Chapter 5, ~ir Pollution Abatemen~ l~anual," copyright 1951~ by Manufacturing Chemists~ Association, Inc., gashington, D.C., copies of which shall be on file with the City Clerk, 17.111 Glare. No direct or sky-reflected glares whether from flood- lights, high temperature processes, combustion, welding or otherwise shall be visible at the above-mentioned test points. This restriction shall not apply to signs, floodlighting of buildings, advertising or protection otherwise permitted by this Ordinance. 27