Sound in January 1982. The Western Long Island Sound Disposal Site (WLIS) was 

 originally deemed WLIS III, a 2384 m x 2221 m rectangular area defined as the area 

 between 41°00.000' N; 40°58.800' N latitudes, and 73°29.500' W; 73°27.800' W 

 longitudes (USAGE 1982). These boundaries were established within a final 

 environmental impact statement (FEIS) completed by NED in 1982. WLIS resides in close 

 proximity to the historic Stamford, Eatons Neck, and Norwalk historic dredged material 

 disposal sites (Figure 1-2). Since 1982, the 5.29 km^ area has accepted small to moderate 

 volumes of dredged material originating from Stamford, Norwalk, and other coastal 

 communities of Connecticut and New York through systematic deposition. 



After 1992, DAMOS erroneously utilized a secondary description of WLIS (EUer 

 and Williams 1996; Charles and Tufts 1996). This DAMOS site description was based on 

 a 1 nmi^ (3.42 km^) area with a center point of 40°59.400' N latimde and 73°28.700' W 

 longimde, and a location 5.13 km south of Long Neck Point, Noroton, Connecticut (Figure 

 1-2). 



This secondary description also tended to standardize the dimensions of WLIS, 

 promoting a common unit of measure in relation to the other DAMOS disposal sites within 

 Long Island Sound (i.e., CLIS 2 nmi^ CSDS 1 nmi^ NLDS 1 nmi^ Morris 1996). 

 However, the use of this secondary description will be discontinued and all present and 

 fiimre DAMOS documents will refer to WLIS as the larger 5.29 km^ area as defined by the 

 1982 FEIS. 



As of July 1996 a total of eight discrete dredged material disposal mounds (A 

 through H) occupy the seafloor at WLIS (Figure 1-3). Although no sediment capping 

 operations have been proposed at WLIS for the near future, the mounds are being 

 strategically placed to form a series of rings or containment cells within the disposal site. 

 This management strategy proved to be a highly successftil method of containing large 

 volumes of dredged material (> 1,100,000 m^) at the Central Long Island Sound Disposal 

 Site (CLIS; Morris et al. 1996). As a result, the process of constructing networks of 

 containment cells has been employed at many of the ten DAMOS disposal sites to facilitate 

 disposal of fine-grained dredged materials with minimal lateral spread of aprons, as well as 

 to maximize the overall capacities of the disposal sites. 



The H mound is the most recent disposal mound formed at WLIS. The WD A 95 

 buoy was deployed in September 1995 at 40°59.228' N, 73°28.732' W approximately 

 240 m northeast of the historic F mound (Figure 1-4; Appendix A, Table 1-1). The H 

 mound is composed of 15,300 m^ of sands, silts, and clays dredged from harbors and 

 creeks along the Connecticut coast and the North Shore of Long Island, New York. An 

 estimated barge volume of 10,060 m^ of dredged material originating from Connecticut's 

 Wilson Cove, Norwalk and Stamford Harbors, and Pratt's Cove was deposited at WLIS in 



Monitoring Cruise at the Western Long Island Sound Disposal Site, July 1996 



