The quantification of odour problems associated with liquid and solid agricultural and industrial wastes has long been a controversial subject because of the generally subjective nature of the methods used in evaluating odour related complaints. To overcome this problem, a scheme was devised which included three separate quantification techniques, researched both locally and abroad. The collective scheme was introduced as the “Practical Odour Nuisance Gauging” method. This technique has been applied in a number of local odour related investigations and updated throughout so as to render it more practical and acceptable. Two case studies are included to serve as examples of the application of this scheme. It is shown that odour nuisances were indeed present or were likely to occur at the sites investigated.

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