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APPENDIX C 



106-MILE SITE 

 TECHNICAL SUMMARY 



This report is being submitted by New York City in response to a request 

 by the Environmental Protection Agency (EPA) for comments on a Proposed 

 Rule for Designation of the 106-Mile Ocean Dump Site which appeared in 

 the Federal Register on 20 December 1982 ("17 FR 56663). The proposed 

 rule would designate the 106-Mile Site as an approved ocean dumping site 

 for authorized disposal of certain aqueous industrial wastes for an 

 indefinite period of time, and for the authorized disposal of municipal 

 sewage treatment sludges for a period of five years. This report specif- 

 ically addresses the proposed five-year designation of the site for the 

 authorized disposal of municipal sewage sludges. 



In order to designate the 106-Mile Site for the disposal of sewage 

 sludge, EPA must consider a number of criteria established as part of 

 the Ocean Dumping Regulations at 40 CFR 228.5 and 40 CFR 228.6. Each 

 of these criteria was examined by EPA in the Final Environmental Impact 

 Statement for 106-Mile Ocean Waste Disposal Site Designation, February 

 1980 (1980 FEIS). New York City's report provides a comprehensive update 

 and assessment of the technical information incorporated in the 1980 FEIS 

 and demonstrates that the recent data confirm that the 106-Mile Site 

 could be designated for authorized disposal of sewage sludge under the 

 conditions stated in the 1980 FEIS: 



"Sludge disposal should be allowed at the [106-Mile] site 

 only under the following conditions: 



. Provided the existi ng Sewage Sludge Site cannot safely 

 accommodate more sludge disposal without endangering 

 public health, severely degrading the marine environment, 

 or degrading coastal water quality. 



Independent surveillance by the USCG or an unbiased 

 observer (the latter at the permittee's expense) will be 

 conducted with a program goal of 50 percent surveillance, 

 assuming that surveillance would be increased with the 

 implementation of COSS [Ocean Dumping Surveillance System] 

 by the USCG. 



. Monitoring for short- and long-term impacts will be accom- 

 plished by Federal agencies and environmental contractors 

 (the latter at the permittee's expense). This monitoring 

 must include studies of the fate of solids and sludge 

 micro-organisms, inside and outside of the site, and a 

 comprehensive analysis of environmental effects. 



. Vessels will discharge the sludge into the wake so that 

 maximum turbulent dispersion occurs. 



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