The effluent stream has a nor mal charge of oxygen and thu overcomes the objectionable part , of stream contamination removal of oxygen to the extent that water and fish life and puri flying action are imperiled. With the surface water run-off cleaned of wastes and fully charg ed with oxygen, the sediment de posit on the lagoon bottom is so fine that the rate of pile-up is only 12 inches in 100 years, ac cording to current lagoon statis tics. Oxidation lagoons, an accepted mid-western method of sewage disposal, serve a population on the basis of 100 to 300 persons to one acre, according to sanitation engineers. 41 Acres of Water For Farmville's contemplated two-iagoon system, a total of about 41 acres of water will be required to serve the whole com munity. A tentative ratio of 150 persons and one acre will be used here under agreement with the Water Control Board. The process was found by acci dent, with wastes from an over flowing standard treatment plant escaping into a pit. Observers found the effluent stream was Odorless and clean, and the dis covery was made. The normal treatment plant, in addition to expensive original construction and equipping, re quires heavy annual outlays for maintenance, chemicals, replac e ment and operating salaries. Town Manager Lewis Johnston estimates a standard plant would cost Farmville $600,000 originally, plus annual operating costs of about $13,000. (Continued on page 7>

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