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Questions and Answers for the Record 



Hearing Before House MM&F-OGM&OCS on 30 March 1993 



Ocean Disposal of Contaminated Dredge Material 



Question from Mr. Weldon - How often is the "green book" 

 revised and updated to meet the changing needs of testing and 

 evaluating proposed discharges of dredged sediment? 



ANSWER Mr. Rees: There is no regular schedule for revising and 

 updating the green book. Rather, the green book has been 

 designed in loose leaf fashion and the expectation of the Corps 

 and EPA is that changes will be incorporated as they become 

 necessary and as they are developed to a reasonable degree of 

 scientific credibility. For example, the Corps and EPA are 

 currently conducting research to develop chronic, sublethal 

 testing methodologies which are intended to be incorporated into 

 the green book. 



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