538 | 
rock. Fuel usage and pollution resulting from the transportation of wastes 
and natural aggregate are also eliminated. 
The purpose of this testimony is to show that there is an alternative to 
ocean dumping of sludge that is cheap, practical, and environmentally sound; 
moreover it produces a truly usable end product. The technology was carefully 
developed with government money and is in the public domain for immediate use 
by all cities. Its extremely low capital costs and simplicity should be a 
significant factor in helping put it into the hands of all municipalities 
rapidly. 
