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available from the studies suggested above, models can 

 be continually refined. 



(10) All proposals for new installations, modifications 

 or activities that may result in major changes in the 

 amounts or nature of the pollutants should be reviewed to 

 determine whether quantitative ecological studies of the 

 biota are required, both before and after the change. If 

 such studies would lead to greater protection of the biota 

 or provide better bases for regulation, adequate funds for 

 them must be included in the budget. Enough time must be 

 allowed for careful studies, especially those to be done 

 before the change is made. The data from such studies 

 would increase the accuracy of models and would strengthen 

 the objective bases for setting standards. 



(11) The U.S. Government should encourage the coordina- 

 tion of wastes management over large regions in order to 

 obtain more economical and efficient treatment. This will 

 allow better use of the limited supply of high quality 

 manpower, improve management of waste disposal and allow 

 better control. It will lead to better regulated, and 

 probably reduced, effects on the biota of the receiving 

 waters. 



(12) All of the preceding programs must be subjected to 

 frequent, independent assessment by outside experts in 

 the fields concerned. 



