Regulatory agencies are expected to deal routinely with community odor problems yet they have no objective methods for assessing the effects of odorous sources. A three step strategy has been developed for quantifying the impacts of existing or proposed stationary odorous sources on their surrounding communities. Successful implementation of the proposed protocols would establish: (1) whether there is a recognizable odor problem in the community; (2) how bad the odor is; (3) how much odor there is. A public attitude survey has been designed to aid in the confirmation of recognizable odor problems in the community. Quantification of odors with respect to how bad is done through an evaluation of the degree of offensiveness (DO) as the product of: (1) intensity; expressed as maximum dilution level at 100 percent probability of complaint..