LIST OF FIGURES (continued) 



Page 



Figure 4-4. Abundance species ratios (with and without dominants) and dominants as a 



percentage of total abundance distributed over the Seawolf Mound 1 18 



Figure 4-5. Frequency distribution of mean apparent RPDs at stations sampled at the 



Seawolf Mound in 1997 and 1998, and at the other NLDS reference areas 121 



Figure 4-6. Evidence of sediment recolonization at NLDS; A) September 1997 CTR 



Station compared to B) July 1998 123 



Figure 4-7. Comparison of September 1997 and July 1998 Seawolf REMOTS® stations .... 124 



Figure 4-8. Evidence of sediment disturbance at NLDS 126 



Figure 4-9. Cycle of Ampeliscid tube mat development, decay, and disturbance 127 



Figure 4-10. Three characteristics of small-scale winnowing over the Seawolf Disposal 



Mound documented during the September 1997 survey 128 



Figure 4-11. A) Clumps of glacial gray Gardiners clay at center of Seawolf Mound. 



B) Shell lag with disturbed rube mats at Seawolf Station 300N 129 



Figure 4-12. Spatial distribution of observed winnowing evidence over the Seawolf 



Mound during the 1998 survey 131 



Figure 4-13. 1997 and 1998 sediment core locations with respect to the UDM deposit 



and the capped Seawolf Mound footprint 133 



Figure 4-14. Concentration of HMW versus LMW PAHs normalized by TOC in Seawolf 

 Mound and WEST REF sediment samples shown in relation to (A) sample 

 depth and to (B) radial zone 136 



