A. For purposes of this section, the "odor threshold" is defined as the minimum concentration in air of a gas, vapor or particulate matter that can be detected by the olfactory systems of a panel of three (3) healthy observers appointed by the Board of Supervisors.
B. No use other than agricultural in any zone may generate any odor that reaches odor the threshold, measured at:
1. The outside boundary of the immediate space occupied by the enterprise generating the odor.
2. The lot line if the enterprise generating the odor is the only enterprise located on a lot.
C. The release of odorous matter from any district across residential or commercial district boundary lines shall be so controlled that at ground level or at habitable elevation, the concentration shall not exceed the odor threshold. Further, the release of odorous matter across lot lines shall not become a nuisance or source of discomfort to neighboring uses. As a guide in determining qualities of offensive odors, Table III (Odor Threshold), Chapter 5, Air Pollution Abatement Manual, by Manufacturing Chemists Association, Inc. (as amended), may be used.