185 



Rvspona* to Con<jr»SBion«l R*qu«st for Informmtion 



Question] Based on projected Navy Force Structure, explain tho 

 process Navy uses to determine channel dredging requirements to 

 eupport harbor and Kaval Bace Accecc . Provide a lict of channel 

 and harbors that will require dredging to support Naval 

 opcrutiono in the next 15 years. 



Anawer: Dredging requii-ements are principally baoed on criteria 



from Na-^ Design Manual 26.1. Harbors and channels are dredged 



ill ctwUULdaiiitJt! wlLh moutlmuiu iidvlydLioxirfl dxaCu and undeiktiel 

 safety requirements (such as ship motion frorr. waves, trim, list, 

 squat, r-ides, salinity, diver clearance, etc.) of the vessels 

 that will transit cr be berthed in the area. Additional dredge 

 depth may be required to account for siltation and/or aquatic 

 plant growth. 



Navy dredging is categorized as either Maintenance or 

 Construction dredging. Maintenance dredging is dredging to 

 offset the effects of silLaLioi. . CuusLiacLion diedging j.s 

 dredging in support of a new requirement or waterfront 

 upqrade/replacenient prelect. 



Ports requiring dredging in the next 15 years include: 



NA.? North Island, CA 

 NAS Pensacola, FL 

 NAV.«?TA .<;;in Dipgn, CA 



NAVSTA Pearl Harbor, HI 



NAV3TA Maypor-, FL 



NAVSTA Norfolk, VA 



NAVSTA Ingle side, TX 



NAVSTA Pascagoula, MS 



SUEASE Kingn Bay, CA 



SUBASE New London, CT 



CUDAGC Danger, WA 



Puget Sound Kaval Shipyard, WA 



Norfolk Navdl Shipyard, VA 



WPNSTA Earle, NJ 



WPNSTA Ycrk;towr., VA 



QUESTION: Over the next 15 years, what is the Navy's estimate 

 tor the nunPer ot dredging operations that wil_ be req^uired? How 

 much dredge material v^'<^ result, How much of this nateriai can 

 be considered cjr.tarr.inated or hazardous and will require special 

 disposal methods? 



ANSWER: An estimated number of required dredging " ope r.-;it -Ions" is 

 not available. The number of construction dredging operations is 

 predicated on how dredqinq recfuirements are packaqed into 

 contracts and the availability of military construction funds to 

 support construction dredgir.g require'rien-a . The number of 



