(a) Relating to Combustion for Indirect Heating. In all Manufacturing Districts, the maximum emission permitted into the atmosphere of dust relating to combustion for indirect heating from any source shall not exceed the maximum number of pounds of dust per million British Thermal Units of heat input per hour as set forth herein. The maximum permitted emission shall be one-half pound for minimum-size plants producing a heat input of 10,000 million or more British Thermal Units per hour. All intermediate values shall be determined from a straight line plotted on log graph paper
(b) Relating to Process. In all Manufacturing Districts, the emission into the atmosphere of process dust or other particulate matter which is unrelated to combustion for indirect heating or incineration shall not exceed one-half pound per hour for 100 pounds of process weight or fifty pounds per hour for 100,000 pounds of process weight. All intermediate values shall be determined from a straight line plotted on log graph paper
(c) Total Limit on Emission of Dust or Other Particulate Matter. In all Manufacturing Districts, the maximum amount of dust or other particulate matter from all sources, including combustion for indirect heating, process dust or combustion for incineration which may be emitted from a single stack or vent, shall not exceed thirty-three pounds per hour.
(d) Prevention of Wind-Borne Air Pollution. In all Manufacturing Districts, all storage areas, yards, service roads, or other untreated open areas developed within the boundaries of a zoning lot, shall be improved with appropriate landscaping or paving so that the dust or other types of air pollution borne by the wind from such sources shall be minimized.
(e) Odorous Matter. In all Manufacturing Districts, the emission of odorous matter in such quantities as to be readily detectable at any point along lot lines or to produce a public nuisance or hazard beyond lot lines is prohibited.