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of the ecosystems, transportation, recreation, et cetera. But they 
have counterparts on land. 
My concern is that the promiscuous land release of our wastes, 
including sewage sludge, are jeopardizing one great resource, our 
ground waters. They furnish 40 percent of the drinking water to 
the population of the United States. A recent report by the Nation- 
al Academy of Sciences has indicated an increasing number of re- 
ports of pollution of ground waters, over the last few years, which 
is a consequence of both legal and illegal discharges of waste. 
These waters have remained below the surface for an average 
time of 200 years. They can accumulate wastes over 200 years 
before they re-emerge and perhaps threaten human health or per- 
haps threaten the terrestrial ecosystems. | am sure you are aware 
that this concern must be assessed in the husbandry of any waste 
before it goes to land or sea. 
I thank you for giving me this opportunity to present my sebiel 
I feel the oceans can accommodate more wastes than they are re- 
ceiving today, but it must be done with care and must be done with 
the conventional wisdom of marine science. I point out that con- 
ventional wisdom both in science and social science is written on 
sand, not stone. If I were to appear here 10 years from now, I 
might tell you a different story. 
[The statement of Mr. Goldberg follows:] 
