Discharge into the atmosphere of air contaminants including, but not limited to, sulphur compounds, nitrogen compounds, smoke, charred paper, dust, soot, grime, carbon, noxious acids, fumes, gases, mist, odors or particulate matter or any combination thereof, from any single source of emission whatsoever for a period or periods aggregating more than three minutes in any one hour shall be permitted which:
1. Exceeds the legally permissible discharge limits, herein prescribed as follows: sulfur dioxide, carbon monoxide, oxidant, hydrocarbons and nitrogen dioxide shall be less than set forth as national standard in "Table I," Rules and Regulations, Del Norte County air pollution control district particulate matter, visibility reducing particles, lead, hydrogen sulfide and nitrogen dioxide shall be less than set forth as California standard in "Table I," Rules and Regulations, Del Norte County air pollution control district or additional or more restrictive emission limits as prescribed by the county air pollution control officer or
2. Is as dark or darker in shade as that designated as No. 2 on the Ringleniann Chart, as published by the United States Bureau of Mines or
3. Is of such opacity as to obscure an observer\'s view to a degree equal to or greater than the smoke described in 2 above except that
4. Subparagraphs 2 and 3 above shall not apply when the presence of uncombined water is the only reason for the failure of the emission to meet the requirements of this subsection.
D. Industrial activities shall be of such nature as not to cause damage or jeopardy to the health or safety of persons, animals, vegetation or any form of real or personal property.
E. Water supply, drainage, rubbish and waste disposal systems and practices shall conform to all applicable codes and standards relating to public safety, health, sanitation and/or public works of the county.
(Ord. 74-12 § 3 (part), 1974.)