Tudor Wharf Draft Environmental Impact Report EOEA # 



temporary concrete deck to support the 

 parking requirements of the marina (if 

 Alternative #2is built) and the 

 construction project. Construction of the 

 temporary deck will take one month. 



Phase Two is the construction of the 

 underground parking facility. For 

 Alternative #1, the garage will be four 

 levels and in Alternative #2, the garage 

 will be three levels. In Alternative #2, 

 the garage will extend under the Massport 

 parcel to a new bulkhead that will serve 

 as the northern wall of the garage. 



Under either alternative and using the 

 slurry wall construction technique, the 

 concrete exterior wall of the structure 

 will be cast. Once the exterior wall is 

 complete the garage area will be 

 excavated. For either alternative, about 

 sixty thousand cubic yards of excavate 

 will be removed and trucked away. As it 

 is dug up, the excavate will expand in 

 volume by approximately 25% to 75,000 

 cubic yards. It is estimated that 3,000 

 truckloads of 25 cubic yards each will be 

 required over a three month period to 

 remove the excavate. The garage structure 

 will be constructed inside the exterior 

 wall with cast in place concrete. In 

 Alternative #2, the northern wall of the 

 garage will serve as the bulkhead. At 

 present, the bulkhead slopes downward and 



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