A. All noise shall be muffled so as not to be objectionable due to intermittence, beat frequency or shrillness. In no event shall the sound-pressure level of noise radiated continuously from a structure exceed at the lot line the values in Table 1 of this section. The sound level shall be measured with a sound level meter that conforms to specifications published by the American National Standards Institute (ANSI).
Table 1 EXTERIOR NOISE LIMITS (Levels not to be exceeded more than thirty minutes in any hour) | |||
Noise Level (dBA) Noise Zone Classification* | |||
Adjoining Land Use Category | Time Period | R-S zones | All other zones |
Table 1 EXTERIOR NOISE LIMITS (Levels not to be exceeded more than thirty minutes in any hour) | |||
Noise Level (dBA) Noise Zone Classification* | |||
Adjoining Land Use Category | Time Period | R-S zones | All other zones |
One and two family Residential | 10 p.m. -- 7 a.m. 7 a.m. -- 10 a.m. | 40 50 | 45 55 |
Multiple dwelling Residential Public Space | 10 p.m. -- 7 a.m. 7 a.m. -- 10 p.m. | 45 55 | 50 55 |
Limited commercial some multiple dwellings | 10 p.m. -- 7 a.m. 7 a.m. -- 10 p.m. | 55 60 | |
Commercial | 10 p.m. -- 7 a.m. 7 a.m. -- 10 p.m. | 60 65 | |
Light Industrial | Anytime | 70 | |
Heavy Industrial | Anytime | 75 | |
* The classification of different areas of the community in terms of environmental noise zones is contained in the Noise Element of the General Plan. Additional area classifications should be used as appropriate to reflect both lower and higher existing ambient levels than those shown. Industrial noise limits are intended primarily for use at the boundary of industrial zones rather than for noise reduction within the zone. | |||
B. Permanent and temporary standby power supply.
1. Definitions.
a. “Permanent standby power supply.” A unit that is permanently installed and wired into the electrical panel in such a way as to provide instant standby power in the event of power failure.
b. “Temporary standby power supply.” A unit that is not permanently installed and is used in the course of a power failure.
2. Generators may be used as an auxiliary power source during periods of emergency when primary service is shut-off due to inclement weather, maintenance, or safety.
a. A minimum of 4" concrete slab shall be provided for the placement/location of the unit.
b. The location on the site shall be no closer than five (5) feet from the property lines at the rear and side yard setbacks for all zoning districts. No units are allowed in the front setback area.
c. Exhaust shall be located to face away from any window and door openings a minimum of ten (10) feet from openings.
d. Installation shall meet all requirements and all of the building codes including, but not limited to the California Electric Code, Plumbing Code, Fuel Gas Code, and Flammable and Combustible Liquids Code.
e. Maximum allowable sound levels may be up to 70 decibels. Continuous use shall be in accordance with the manufacturer's installation and use recommendations. Continuous use is allowed only during times of emergency upon power failure or shut-offs as described above and does not include power shut-off due to nonpayment of utility costs. Units may be tested in accordance with manufacturer's recommendations but no more than every two months for a period less than 15 minutes in length between the hours of 10 am and 4 pm.
(Ord. 836-2022 § 1, 2022; Ord. 823-2016 §25 (part), 2016)