. 520. 



STATE OF WASHINGTON DEPARTMENT OP FISHERIES - EXHIBIT E 



period (spring, 1962 and I963). The most prevalent periods 

 of acute toxicity occurred during minus low tides. We feel 

 that poor water quality conditions have not been eliminated 

 as a direct or indirect factor influencing Snohomish River 

 salmon production. 



The co-operative State-Federal Study and 

 conference preceeding the study in the Bellingham-Anacortes 

 area attest to the existence of poor water quality con- 

 ditions which at times endanger the survival of food fish 

 and shellfish, and to marginal conditions which seldom 

 cause directly observable fish losses, but can result in 

 significant losses over extended periods by reduction of 

 survival rates of fish and shellfish and prevent achieving 

 their maximum potential production and growth. We expect 

 the complete results of this co-operative study (Washington 

 State Enforcement Project) will soon be published. 



We recognize and acknowledge with deep appre- 

 ciation the increased co-operation between governmental agencies. 

 Industries, and the public regarding water pollution abatement, 

 However, it would appear that any gain made in the abatement 

 of water pollution in north Puget Sound apparently has been 

 largely overshadowed by the expansion of industry, urbani- 

 zation, and the population growth. The waste discharge, 

 quality effect sources, treatment needs, and results of oyster 



