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2Z8p^ 



1 STATEMENT BY STORKS WATERMAN 



2 experience on effects or good data for all of the waters 



3 In question. We suggest that the 25 JTU standard be con- 



4 sidered temporarily until such experience and data Indicate 



5 a more appropriate value. We further suggest that the 

 wording be changed to "less than 25 when attributable to 

 solids resulting from other than natural origin". 



"5. We concur with the standard proposed 

 g for dissolved Inorganic substances. 

 .Q 6. Referring to the standard on residues 



J. for shellfish growing areas, in our opinion, visible 

 -2 concentrations of waste material or the appearance of 



shellfish growing areas have no correlation with the well 

 .. being of the aquatic environment. If such materials have 

 -g a demonstrable adverse effect, then appropriate controls 

 may be necessary. The first sentence of the standard for 

 residues on Page l6 should be struck and the residue 

 specification on Page l4 which indicates an adverse effect 

 on the use be substituted. 



"7. In the standard proposed for sediment 



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2j we concur with the statement provided that the growth 



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 25 



and propagation refers to species of aquatic life that 

 are in some manner economically Important to man. 



"8. We request that for bioassays of toxic 

 materials the limiting concentration be that which causes 



