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e. Waste Acid Dumping Ground 
Located about 9.3 nautical miles 145° True from Ambrose 
Light. Contributors to this dumping ground include the National 
Lead Company, Sayreville, New Jersey; the General Chemical Com- 
pany, Elizabeth, New Jersey; and several smaller industries in 
the vicinity of South Amboy, New Jersey. 
In addition, there is the so-called 'Waste Chemical Dump- 
ing Ground," located about 106 nautical miles southeast of Ambrose 
Light on the edge of the Continental Shelf. It is used for dump- 
ing toxic materials, mostly wastes from chemical plants. Due to 
the cost of transporting materials to this area, however, it has 
not been used extensively. 
The location of these various grounds was determined in 
several ways. The Mud and Cellar Dumping Grounds were established 
many years ago in locations where they would not be detrimental to 
navigation. The Sewer Sludge Dumping Ground was established in 
1924 following a stipulation reached by the U.S. Supreme Court in 
an action brought by the City of New York to prevent discharge of 
sewage wastes into New York Harbor by the Passaic Valley Sewerage 
Commission. Its location was selected, after discussion with New 
Jersey and New York State Conservation and Health Departments, to 
preclude interference with navigation and to avoid offensive dis- 
coloration or washing up of solids on the beaches. 
During fiscal year 1968 disposal of materials in the dump- 
ing grounds amounted to 17,110,144 cubic yards as follows: 
Ground Cubic Yards 
Mud Dumping 8,784,200 
Cellar Dirt 318,875 
Sewer Sludge 4,833,730* 
Waste Acid 3,117, 623* 
Wreck 3,000 
Chemical (Toxic). 52,716* 
Total: 17,110,144 
The character of this waste is quite variable consisting of 
inert materials (rocks, rubble, tires, shipwrecks, etc.), materials 
that are toxic (petro-chemical compounds), and materials that exert 
*For purposes of general comparison it is estimated that each cubic 
yard of these materials contain 5 to 8 percent solids. 
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