370 



E. J. CAVANAUGH 



'Effects of Solids Deposition. 



'The deposition area attributable to waste 

 water discbarge from the Fibreboard cnill covers an area of 

 about 115 acres and, in general, was found to occupy a 

 segment of a circle with a radius of about 2,500 feet 

 lying northerly and easterly of the mill. This area 

 amounts to about 3. A percent of the area of the bottom of 

 the Port Angeles Harbor as a whole. 



"Bottom deposits in general did not exceed 

 24 inches in depth. At the outer edges the deposition 

 feathers out to a band or strip of isolated clumps of 

 fibrous material. This strip ranges in width from a few 

 feet to several hundred feet. Inspection indicated that a 

 condition of general equilibrium existed between the depth 



and extent of the deposited material and the bottom cur- 

 rents . 



"Observations by divers in the deposition 

 area revealed an abundance of marine animals living on 

 and immediately above the deposits. Those noted include 

 spider crab, anemone, limpet, starfish, shrimp, sculpin 

 and flounder. Existence of these creatures is indicative 

 of aerobic conditions on the surface of the deposit. 



"Except for a shallow surface layer, the water 



overlying the deposition area was found to be quite clear 



