distribution of benthic habitats for possible future BRAT 

 studies. The August sampling grid consisted of a 3 6 station 

 orthogonal grid (6 X 6) with stations equally spaced 200 meters 

 apart. This grid encompassed that portion of the WLIS disposal 

 site occupied by disposal mounds "A", "B" and"C". The locations 

 of the center of these mounds and the August REMOTS stations are 

 indicated on Figure 3-1. A single REMOTS replicate image was 

 obtained at each station. Twenty REMOTS images were also 

 obtained at the WLIS-REFERENCE site (see Figure 2-1) . 



9. On 27 September, approximately one month after the 

 August Survey, Hurricane Gloria moved through Long Island Sound. 

 Maximum wind speeds associated with this event reached 90-100 mph 

 in Long Island Sound for 2-3 hours from the south/southeast. 

 During the course of Gloria up the East Coast, the pressures were 

 the lowest ever recorded. Although Gloria had the potential to 

 approach the magnitude of a 100-year storm, the rapid dissipation 

 of energy after reaching Connecticut had caused the estimated 

 expected frequency of a storm like Gloria to fall between 10 and 

 50 years. This high-energy event provided a unique opportunity 

 to assess the containment quality of the WLIS site and the 

 stability of the dredged material mounds. A WLIS post-storm 

 survey was conducted on 31 October 1985, one month after the 

 storm. The post-storm REMOTS sampling grid focused on disposal 

 mounds "A", "B", and "C". Stations were located at the center, 

 50 meters north, south, east, and west of each of the three 

 mounds. A circle of ten additional stations surrounded all three 

 mounds approximately 400 meters away in all directions (see 

 Figure 3-12) . In the REMOTS analysis of the post-storm images, 

 special emphasis was placed on the detection of erosional and 

 depositional features at both on-mound and off-mound (fringe) 

 stations. 



10. In addition, ten stations extending from the Norwalk 

 harbor entrance to the WLIS disposal site were occupied (see 

 Figure 3-21) to evaluate the distribution of sediment 

 resuspension as a function of depth and distance from shore. A 

 single REMOTS replicate was obtained at all post-storm stations. 



11. Methods of REMOTS image interpretation are described in 

 earlier DAMOS reports and are not repeated here. 



3.1 August Survey 



12. The distribution of dredged materials in the area 

 surveyed is shown in Figure 3-1. It must be stressed that the 

 optical detection of dredged material in the WLIS disposal site 

 can be equivocal. Typically (e.g. at Central LIS disposal sites) 

 dredged material is readily discerned in REMOTS images because of 

 its extreme low reflectance (blackness) relative to ambient 

 reduced sediments. When dredged material layers are thicker than 

 the REMOTS prism penetration depth (15-2 cm) , these extremely 

 "black" sediments extend to the bottom of the film frame and 

 contrast sharply with high reflectance (oxidized) surface 



