An application for a building permit and certificate of occupancy for a use subject to performance standards shall be accompanied by a plan of the proposed use, including a description of proposed machinery, operations and products, and specifications for devices and techniques to be used in restricting the emission of dangerous or objectionable elements, but no description of secret processes need be submitted. An affidavit signifying that the use applied for meets the standards of this article shall accompany the permit application.

On determination that the proposed use conforms to the applicable standards, the Building Inspector shall issue a permit, provided that all other requirements of this chapter have been met. If any reasonable doubt as to compliance with performance standards exists, the Building Inspector shall refer the application to the Zoning Board of Appeals for determination. The Zoning Board of Appeals may employ expert consultants to investigate and report upon the proposed use and shall specify a time within which the report shall be received. A public hearing shall not be held until the report of the consultants has been received. Any reasonable cost of such investigation and report shall be paid by the applicant, and an estimate thereof shall be furnished before a consultant is retained by the Board.

Any use subject to performance standards shall conform to the regulations set forth in this section as applicable.

Fire and explosion hazards. All activities and all storage areas for flammable and explosive materials shall be provided with adequate safety devices against the hazards of fire and explosion, and adequate fire-fighting and fire suppression equipment and devices shall be provided and maintained. Storage of explosives is prohibited.

Radioactivity or electrical disturbance. No activities which emit dangerous radioactivity at any point shall be permitted. No electrical disturbance (except from domestic household appliances) adversely affecting the operation of any equipment other than that of the creator of such disturbance shall be used.

Smoke. No emission shall be allowed at any point, from any chimney or otherwise, of visible gray smoke of a shade darker than No. 1 on the Ringelmann Smoke Chart as published by the United States Bureau of Mines, except that visible gray smoke of a shade not darker than No. 2 on said chart may be emitted for not more than four minutes in any 30 minutes. These provisions applicable to visible gray smoke shall also apply to visible smoke of a different color but with an equivalent apparent opacity.

Fly ash, dust, fumes, vapors, gases and other forms of air pollution. No emission shall be allowed which can cause any damage to health, to animals or to vegetation or which can cause any excessive soiling at any point. In no event shall any emission, from any chimney or otherwise, of solid or liquid particles exceed concentrations of 0.3 grain per cubic foot of the conveying gas or air at any point. For measurement of the amount of particles in gases resulting from combustion, standard corrections shall be applied to a stack temperature of 500° F. and 50% excess air.

Liquid or solid wastes. No discharge shall be made at any point into any private sewage disposal system, stream or waterway or into the ground of any materials in such a way or of such nature or temperature as can contaminate any water supply or swimming area or otherwise cause the emission of dangerous or objectionable elements, except in accordance with standards approved by Nassau County. No accumulation of solid wastes conducive to the breeding of rodents or insects shall be allowed.

Vibration. No vibration at any time shall produce an acceleration of more than 0.1 gravity or shall result in any combination of amplitudes and frequencies beyond the "safe" range of Table 7, United States Bureau of Mines Bulletin No. 442, Seismic Effects of Quarry Blasting, on any structure. The methods and equations of said Bulletin No. 442 shall be used to compute all values for the enforcement of this article.

Noise. At the specified points of measurement, the sound-pressure level of noise radiated continuously from an establishment at nighttime shall not exceed the values given in the table below in any octave band of frequency. The sound-pressure level shall be measured with a sound-level meter and an octave band analyzer that conform to specifications published by the American National Standards Institute.[1]

Odors. No emission of odorous gases or other odorous matter shall be made in such quantities as to be offensive at the specified points of measurement. Any process which may involve the creation or emission of any odors shall be provided with a secondary safeguard system so that control will be maintained if the primary safeguard system should fail. There is hereby established as a guide in determining such quantities of offensive odors Table III (Odor Thresholds) in Chapter 5, Air Pollution Abatement Manual, copyright 1951 by the Manufacturing Chemists' Association, Inc., Washington, D.C.

Glare. No direct or sky-reflected glare, whether from floodlights or from high-temperature processes such as combustion or welding or otherwise, shall be generated so as to be visible at the specified points of measurement.