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WEYERHAEUSER COMPANY ATTACHMENT 



we summarize as follows: 



A review and discussion of significant 

 chemical and biological data has been prepared for the 

 waters of the Everett area for consideration by the Wash- 

 ington State Pollution Control Commission in establishing 

 water quality standards. 



The 'Criteria for Water Quality Standards', 

 as presented by the Association of Washington Industries, 

 has been considered and found to provide a general rationale 

 and a set of practical working standards which, if adopted, 

 will ensure proper protection for all water uses, including 

 waste assimilation. 



The deep water diffuser jointly operated by 

 two sulphite pulp mills provides an example of a working 

 waste dispersal zone compatible with the concept of multiple 

 use of the waters. 



The variability shown in the compilation of 

 water quality data cited exemplifies the complexity of the 

 estuarial system and points to certain impractical aspects 

 of the standards being proposed. The narrow limits proposed 

 do not indicate sufficient consideration of seasonal, 

 diurnal, hydrographlc, and meteorological factors. 



The oyster larvae bioassay as generalized 

 evidence of pollution is subject to question. Only data derive: 



