(A) Maximum permitted sound levels adjacent to residential zoning districts. The table below displays the maximum permitted sound levels that may be generated by uses in the LC, UC, B-2 or ML/C-1 Districts where adjacent to residential zoning districts. All measurements shall be taken at or within the boundary between the originating district and the adjacent residential zoning district with a sound level meter meeting ANSI specification for a Type II or better general purpose sound level meter. The A-weighted response shall be used.
Originating Zoning District | Time | Maximum One Hour Leq* (dbA) |
LC, UC, B-2 | 7:00 a.m. - 10:00 p.m. 10:00 p.m. - 7:00 a.m. | 65 55 |
ML/C-1 | 7:00 a.m. - 10:00 p.m. 10:00 p.m. - 7:00 a.m. | 70 55 |
Note: LEQ is the constant sound level that, in a given situation and time period, conveys the same sound energy as the actual time-varying, A-weighted sound. It is the average sound level and accurately portrays the sound the human ear actually hears. | ||
(B) Lighting performance standards.
(1) Area lighting shall be conducted so that the light source is directed away from areas in residential use or shall be controlled so that candlepower per 1,000 lamp lumens does not numerically exceed 50 lamp lumens (5%) above the vertical angle of 78 degrees above nadir; or emit more than 500 foot-lamberts per unit projected surface area of the luminaire above a 78-degree vertical angle.
(2) Luminous element signs shall not exceed 300 foot-lamberts. Luminous building fronts shall not exceed 100 foot-lamberts in average surface luminance. Flood lighted signs shall not exceed 75 foot-lamberts in average surface luminance. Exposed lamp signs and luminous tube signs shall not exceed 400 foot-lamberts in average surface luminance.
(3) Illumination resulting from outdoor lighting shall be conducted so that direct or indirect illumination does not exceed one-half-horizontal (0.5) foot candles at a boundary line with an adjacent residential zoning district.
(Ord. 23-09, passed 8-21-2023)