DEP Environmental Protection Forms Folder 1175, 1996-2001

NYC 9/11 Public Portal Document

CHAPTER 2—NOISE CONTROL § 24-243 (v) Any other premise occupied in conformance with a certificate of occupancy as issued by the department of buildings prior to November eighteenth, nineteen hundred seventy-nine, provided, however, that in no event shall the noise levels exceed those allowable in a N-3 ambient noise quality zone or their present noise level whichever is less. - (2) All new activities not exempt by paragraph one of subdivision b of this section shall fall under the jurisdiction of this section of the noise control code upon November eighteenth, nineteen hundred seventy-nine.

(3' Tnree years from October nineteenth, nineteen hundred eighty-two all activities not exempt by paragraph one of subdivision b of this section shalt meet tnese specified noise criteria.

(4) Activities not exempt by paragraph one of this subdivision in a giver. noise quality zone shall not cause the sound levels in any lower noise quality zone to exceed the appropriate standards of section 24-243 of the code for the lower noise zone.

(5; All noise measurements shall be made at the property line of the impacted site. When instrumentation cannot he placed at the property line, the measurement shall be made as close thereto as is reasonable. However, noise measurements shall not be made at a distance less than feet from the edge of a noise source. twenty-five

(6) Where residential noise quality zones (N-Z and N-2) presently ex- hibit noise levels lower than 55dB(A), no new activity in any zone, with the exception of new housing or new low occupancy commercial uses shall be permitted to increase the daytime hourly Leq above 55dB(A) or the night- time hourly Leq above 45dB(A), when measured at or referred to an impacted residential property line.

(7) All new limited-access highways hereinafter constructed or substan- tially reconstructed highways built in the city of New York must be designed to provide that the hour ly equivalent noise levels at the property line of the nearest residence does not exceed 67dB(A).

(8) Commercial district noise standards shall apply to legally occupied mixed buildings used partly for residential use and partly for commercial or manufacturing uses between the hours of seven a: m. to ten p. m. No one shall conduct or permit to be conducted activities associated with these commercial establishments that cause the Leq noise levels, measured for any thirty minutes in the sleeping areas of nearby residences, to exceed 45dB(A) between ten p. m. and the following seven a. m.

(9) The ambient noise quality criteria and standards cited above are not presently adjusted for particular noise sources having pure tones or impul- sive noise characteristics, such as jet engine whine and pile drivers, respec- tively. Such characteristics shall be considered in the development of allowable sound levels for sources, as part of seciton 24-244 of this code.

6219 NYC 12-31-ss _ NYC-WTC 000138226