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EUGENE P. HAYDU 

 There are other areas in Puget Sound where 

 oysters are grown in the presence of the SWL. It is my 

 understanding that while limited oyster spawning may occur 

 occasionally in these areas, the industry must depend upon 

 seed oysters brought in from other areas to sustain itself. 

 Since the larval stage is of very limited significance in 

 such cases, the oyster larval test can hardly be considered 

 as relevant. It would be much more realistic to devote 

 toxicity studies to the life stages and species which do 

 occur there. 



Tha nk you very much . 



CHAIRMAN STEIN: Thank you, Dr. Haydu. 

 Are there any questions or comments? 



MR. HARRIS: I have no questions. 



MR. POSTON: No questions. 



CHAIRMAN STEIN: I would like to refer back 

 to your first paper, largely your statements on Page 2. 

 You talk about the toxicological characteristics of pulp 

 mill effluents, including sulfite waste liquor. You also 

 talk about the toxicity of kraft wastes and the available 

 evidence --"While similar studies have not been made with 

 sulfite liquors, the available evidence indicates that the 

 toxic components of this waste are also degradable." Then 

 in the last paragraph you stated: 



