42-432 - Maximum permitted emission of smoke

LAST AMENDED
6/6/2024

In all #Manufacturing Districts#, the density of emission of #smoke# during normal operations shall not exceed #Standard
Smoke Chart number# 2, and the quantity of #smoke# shall not exceed a maximum of 10 #smoke units# per hour per stack in
M1 Districts, 20 such units in M2 Districts, and 30 such units in M3 Districts. The method of measurement, additional
limitations on the emission of #smoke# of a density not exceeding #Standard Smoke Chart number# 2, and the maximum
permitted density and quantity of #smoke# during special operations such as building new fires, banking, or cleaning fires, soot
blowing, or process purging, shall be determined in accordance with rules and regulations adopted by the Department of
Environmental Protection.