LOS ANGELES CITY MUNICIPAL CODE: ORDINANCES
NOTE: [Bold and all capital letters added for emphasis here]
Chapter XI Noise Regulation, Article 2 Special Noise Sources,
Re: Powered Equipment Intended for Repetitive Use in Residential Areas and Other Machinery, Equipment, and Devices.
(a) Between the hours of 10:00 p.m. and 7:00 a.m. of the following day, no person shall operate any lawn mower, backpack blower, lawn edger, riding tractor, or any other machinery, equipment, or other mechanical or electrical device, or any hand tool which creates a loud, raucous or impulsive sound, within ANY RESIDENTIAL ZONE or within 500 feet of a residence.
(b) Except as to the equipment and operations specifically mentioned and related elsewhere in this Chapter or for emergency work as that term is defined in Section 111.01(d), and except as to aircraft, tow tractors, aircraft auxiliary power units, trains and motor vehicles in their respective operations governed by State or Federal regulations, no person shall operate or cause to be operated any machinery, equipment, tools, or other mechanical or electrical device, or engage in any other activity in such manner as to create any noise which would cause the noise level on the premises of any other occupied property, or, if a condominium, apartment house, duplex or attached business, within any adjoining unit, to exceed the ambient noise level by more than five (5) decibles.
[Effective on February 13, 1998]
(c) Notwithstanding the provisions of Subsection (a) above, no gas powered blower shall be used within 500 feet of a residence at anytime. Both the user of such a blower as well as the individual who contracted for the services of the user, if any, shall be subject to the requirements of and penalty provisions for this ordinance. Violation of the provisions of this subsection shall be punishable as an infraction in an amount not to exceed One Hundred Dollars ($100.00), notwithstanding the graduated fines set forth in L.A.M.C. Section 11.00(m).
Maximum noise Level of Powered Equipment or Powered Hand Tools.
Between the hours of 7:00 a.m. and 10:00 p.m., in any residential zone of the City or within 500 feet thereof, no person shall operate or cause to be operated any powered equipment or powered hand tool that produces a maximum noise level exceeding the following noise limits at a distance of 50 feet therefrom:
(a) 75dB(A) for construction, industrial and agricultural machinery including crawler-tractors, dozers, rotary drills and augers, loaders, power shovels, cranes, derricks, motor graders, paving machines, off-highway trucks, ditchers, trenchers, compactors, scrapers, wagons, pavement breakers, compressors and pneumatic or other powered equipment;
(b) 75dB(A) for powered equipment of 20 HP or less intended for infrequent use in residential areas including chain saws, log chippers and powered hand tools;
(c) 65dB(A) for powered equipment intended for repetitive use in residential areas, including lawn mowers, backpack blowers, small lawn and garden tools and riding tractors.
(NOTE: "including" assumes, "including, but not limited to".)