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Subpart 257-10: Ambient Air Quality Standard-Hydrogen Sulfide (H2S)

(Statutory Authority: Environmental Conservation Law, § 15)

[Filed 4/28/72. Effective 5/1/72.]

[This is page 1 of 1 of this Subpart. A complete list of Subparts in this regulation appears in the Chapter 3 contents page. A list of sections in this Subpart appears below.]

For administrative information about this posting, contact: Division of Air Resources. The Bureau of Air Quality Planning at (518) 402-8396 or the Bureau of Stationary Sources at (518) 402-8403 is the contact for technical questions pertaining to this rule.



§257-10.1 Definition

Hydrogen sulfide (H2S) is a colorless gas having a characteristic, disagreeable odor often described as that of rotten eggs. For the purpose of this Subpart the term hydrogen sulfide will include hydrogen sulfide and other sulfides as measured by the acceptable analytical method.

§257-10.2 Objective

Hydrogen sulfide can cause odors which unreasonably interfere with the comfortable enjoyment of life and property. Although tarnishing of metals and discoloring of paint may occur at higher ambient air concentrations the primary objective of this standard is to prevent disagreeable odors.

§257-10.3 Standard

Applicable in all levels. In any one-hour period, the average concentration of hydrogen sulfide shall not exceed 0.01 ppm (14 µg/m3).

§257-10.4 Measurement

(a) Hydrogen sulfide is determined by the Cadmium Hydroxide-Methylene Blue method and expressed as parts of hydrogen sulfide per million parts of ambient air (ppm) by volume.

(b) All measurements are corrected to a reference temperature of 25 degrees Centigrade and to a reference pressure of 760 millimeters of mercury.