EOEA #6744 ENF Certificate October 26. 1987 



Flood Hazard 



The EIR should present a complete and detailed flood 

 analysis, which fully documents the preconstruction and 

 postconstruction flooding characteristics of the project site for 

 the 10, 50. and 100 year storm events. The study should take 

 into account incident wave heights, overtopping wave heights, 

 flood elevations, flow velocities and direction. It should be 

 demonstrated that the pier and project components will withstand 

 storms of record. 



The proposed drainage plan for the project site should be 

 described and plans presented. Techniques to minimize harbor 

 pollution, directly related to site runoff should be explained. 



Visual Impacts 



Important views to. from, and across the site were 

 identified at the scoping session. The longshore views should 

 not be overlooked in the analysis as pointed out by the MCZM 

 staff. An analysis of the existing view corridors and 

 postdevelopment changes should be presented. 



Drawings, sketches, and overdrawn photographs should be 

 provided to show the extent to which views are obstructed at both 

 street level and from elevated structures. Several key views 

 that were recommended for consideration are: the views from 

 Warren Street, from the Charlestown Bridge and Rutherford Avenue, 

 from Paul Revere Landing Park, views to City Square, to the 

 U.S.S. Constitution, to Boston Harbor and the waterfront, to the 

 Bunker Hill Monument, and other historic structures in the 

 Charlestown Navy Yard. 



The analysis must take into consideration the building 

 heights, massing and scale, and building orientations. 



Dredging 



Locus plans at a sufficient scale should be provided to show 

 the areas to be dredged. Include pre- and post- dredge 

 elevations, side slopes, natural features, and sample site loci. 

 The volume of material to be dredged should be quantified and 

 qualified. The EIR should provide a bulk sediment analysis, 

 including PAH testing, and a grain size analysis. Based upon the 

 results of these tests, it may also be necessary to provide, 

 elutriate testing, and bioassay and bioaccumulat ion studies. 



The EIR should identify a disposal option for the dredged 

 material. If upland disposal is recommended, the report should 

 demonstrate that the material is suitable. 



