Prior to construction and operation. Any application for a building permit for a use which shall be subject to performance standards shall be accompanied by a sworn statement by the owner of subject property that said use will be operated in accordance with the performance standards set forth herein.

Continued compliance. Continued compliance with performance standards is required, and enforcement of continued compliance with these performance standards shall be the responsibility of the Zoning Officer or Zoning Hearing Board.

Determination of violation. The Zoning Officer shall investigate any purported violation of performance standards and, if there is reasonable ground for the same, shall notify the Zoning Hearing Board of the occurrence or existence of a probable violation thereof. Said Board shall investigate the alleged violation. If, after public hearings on due notice, said Board finds that a violation occurred or exists, such violation shall be terminated as provided in Subsection D following.

Termination of violation. All violations as ascertained in accordance with Subsection C above shall be terminated within 30 days of the decision of the Zoning Hearing Board or shall be deemed a separate violation for each day following and subject to fines as set forth herein, except that certain uses established before the effective date of this chapter and nonconforming as to performance standards shall be given a reasonable time in which to conform therewith as determined by said Board.

Definition of elements. No land or building in any M District which shall be used or occupied or manufacturing purposes shall be operated in such a manner so as to create any dangerous, injurious, noxious or otherwise objectionable fire, explosive or other hazard; noise or vibration; smoke, dust, dirt or other form of air pollution; electrical or other disturbance; glare; or other nuisance, condition or element in such amount as to adversely affect the surrounding area or premises (referred to herein as "dangerous or objectionable elements"), provided that any use permitted by this chapter may be undertaken and maintained in any M District if it conforms to the regulations of this subsection limiting dangerous and objectionable elements at the specified point or points of the determination of their existence.

Locations where determinations are to be made for enforcement of performance standards. The determination of the existence of any dangerous and objectionable elements shall be made at:

Fire and explosion hazards. In all activities involving and all storage of, flammable and explosive materials, the owner or operator of such use shall provide adequate safety devices against the hazard of fire and explosion and adequate fire-fighting and fire-suppression equipment and devices standard in this industry. Burning of waste materials in open fires is prohibited. The relevant provisions of state and local laws and regulations shall also apply.

Radioactivity or electrical disturbance. No activities shall be permitted which emit dangerous radioactivity or electrical disturbance adversely affecting the operation of any equipment other than that of the creator of such disturbance.

Noise. At the points of measurement specified in § 325-54B, maximum sound pressure level radiated in each standard octave band by any use or facility, other than transportation facilities or temporary construction work, shall not exceed the values for octave bands lying within the several frequency limits given in Table III after applying the corrections shown in Table IV. The sound pressure level shall be measured with a sound level meter and associated octave-band analyzer conforming to standards prescribed by the American Standards Association. (American Standard Sound Level Meters for Measurement of Noise and Other Sounds, Z24.3-1944, American Standards Association, Inc., New York, New York, and American Standard Specification for an Octave-Band Filter Set for the Analysis of Noise and Other Sounds Z24.10-1953, or the latest approved revision thereof, American Standards Association, Inc., New York, New York, shall be used.)

Vibration. No vibration shall be permitted which is detectable without instruments at the points of measurement specified in § 325-54B.

Glare. No direct or sky-reflected glare, whether from floodlights or from high-temperature processes such as combustion or welding or otherwise, shall be visible at the points of measurement specified in § 325-54B. This restriction shall not apply to signs otherwise permitted by the provisions of this chapter.

Smoke. No emission shall be permitted from any chimney or otherwise of visible grey smoke of a shade equal to or darker than No. 2 on the Power's Micro-Ringelmann Chart, published by McGraw-Hill Publishing Co., Inc., and copyrighted 1954 (being a direct facsimile reduction of a standard Ringelmann Chart as issued by the United States Bureau of Mines), except that visible grey smoke of a shade equal to No. 3 on said chart may be emitted for four minutes in any thirty-minute period.

Odors. No emission shall be permitted of odorous gases or other odorous matter in such quantities as to be readily detectable at the property line of the zone lot from which they are emitted without instruments.

Other forms of air pollution. No emission of fly ash, dust, fumes, vapors, gases and other forms of air pollution shall be permitted which can cause any damage to health, to animals, vegetation or other forms of property or which can cause any excessive soiling.