§ 105-99. Smoke, dust and other atmospheric pollutants.

A. 

Definitions. For the purposes of this section, the following terms are defined as follows:

DUST

Solid particulate matter capable of being air- or gasborne.

PARTICULATE MATTER

Any finely divided liquid or solid matter, including smoke, capable of being air- or gasborne.

RINGELMANN SMOKE CHART

A chart for determining the density of smoke and described in Federal Bureau of Mines Information Circular 7718.

SMOKE

Any visible emission into the open air from any source, except emissions of an uncontaminated water vapor.

SMOKE UNIT

A measure of the quantity of smoke being discharged and is the number obtained by multiplying the smoke density in a Ringelmann Smoke Chart number by the time of emission in minutes. For example, the emission of Ringelmann Smoke Chart No. 1 for one minute equals one smoke unit.

B. 

Method of measurement of smoke. For the purpose of grading the density of the smoke, the Ringelmann Smoke Chart shall be used for the purpose of determining the total smoke units omitted, a reading shall be taken every minute for an hour or, if less than an hour, until the total smoke units emitted exceed the number allowed by this chapter. Each reading shall be multiplied by the number of minutes during which it was observed and the product added.

C. 

Maximum permitted emission of smoke. In the ED-A District there shall be no measurable emission of smoke, gas or other atmospheric pollutant. The emission of one smoke unit per hour and smoke with discernible density of No. 1 on the Ringelmann Smoke Chart shall be prohibited.

D. 

Maximum permitted emission of dust.

(1) 

Related to combustion for indirect heating. In the ED-A District, the emission of dust related to combustion for indirect heating from any source shall not exceed 0.30 pounds of dust per 1,000 pounds of flue gas adjusted to 50% excess air for combustion.

(2) 

Related to processes other than combustion for indirect heating. In the ED-A District, there shall be no measurable emission of dust or other particulate matter not related to combustion for indirect heating.

(3) 

Prevention of wind-blown air pollution. All storage areas, yards, service roads or untreated open areas within the boundaries of a plot in the ED-A District shall be improved and maintained with appropriate landscaping, screening, paving, oiling or sprinkling or treated by other means, so that there shall be no dust or other types of air pollution.

E. 

General control over smoke and other particulate matter. In addition to the performance standards of regulating smoke and other particulate matter, the emission of such matter shall be so controlled in manner and quantity of emission as not to be detrimental to or endanger the public health, safety, comfort or other aspects of the general welfare or cause damage or injury to property.