ApproKlmite felnfonihtp btlween 



the BidIo£i'c)I ctjiiiriciiion ind iKe 



lened cgndnions of Diiiol»ed 



0«,gen. 



A,- Over 95% D,0. 



B.- 80 to 90y, DO. 



C- 65 10 80% DO 



D,- 50 (o 65% DO 



E.- 40 10 50% DO 



F.- Under 40% D.O. 



D Suiiabte for fish life under 



all nonnal condiiions. 



E Animal and plant life 



lOisliy unible to lubsiit. 



