305 



BOB 0. BOWER 



"It is recooMDended that the statecnent 

 specifying a maximum of three parts per million of SWL 

 beyond one-half mile from the point of discharge be changed 

 to indicate that this tolerance may be lowered if later 

 research proves this level to be harmful." 



A Washington Pollution Control Commission 

 report dated February 1960, by Gunter and McKee , states: 



"The permit system falls short of its 

 objective when it specifies effluent requirements to the 

 exclusion of quality criteria of receiving waters," 



and 



"We recommend that the Commission adopt 

 standards of water quality over and near oyster beds in 

 terms of the modified Pearl-Benson Index (concentration 

 in parts per million by volume of SWL)." 



A Pollution Control Commission statement 

 dated July 1960 and signed by Roger Tollefson and Dr. 

 Jerome E. Stein, among others, states: 



"As measured by the Pearl-Benson Index test 

 presently in use by the Fisheries Department, the background 

 value generally does not exceed three parts per million, 

 except in some isolated instances or areas." 



And there is agreement in regards to PBI 

 values determined by the fisheries method in North Puget 



