Air Pollution. No smoke, dust, fly ash, vapor, fume, odor, or any other form of air pollution shall be permitted in excess of the standards set forth by the Air Quality Management District of the County. In no event shall such elements be permitted which can cause any damage to human health, animals, or vegetation or which can cause excessive soiling at any point of measurement. The point of measurement shall be the same as utilized by the Air Quality Management District of the County.

Noise. No discrete noise source in the City shall exceed 76 decibels on the Community Noise Equivalent Level (CNEL) weighted scale as measured on any property line. No discrete noise source in the City shall exceed 55 decibels on the CNEL weighted scale at any property line of a residentially zoned property. No discrete noise source in the City shall exceed 55 decibels on the CNEL weighted scale within 100 feet of an existing building used as a hospital, school, library, rest home, convalescent home, senior citizens' home, mental institution, or other similar noise-sensitive land use as determined by the Planning Director.

Underground Tanks Out of Service For One Year. Any underground tank which has been out of service for one year or more shall be permanently abandoned in accordance with the Uniform Fire Code. Permanent abandonment shall comply with the requirements of the Los Angeles County Ordinance No. 83-0206V and meet all standards of Section 25284 of the California Health and Safety Code. The Fire Chief shall verify that abandonment has been completed prior to any application for a conditional use permit, variance, change of zone or certificate of occupancy.

Exceptions. The provisions of this section shall not preclude emergency work made necessary to restore property to a safe condition following public calamity, or work required to protect persons' property from an imminent danger, or work by private or public utilities when restoring utility service.