I. INTRODUCTION 



1-01. GENERAL 



This report presents a summary of preliminary subsurface 

 explorations and foundation design recommendations for the 

 proposed Tudor Wharf project to be constructed in Charlestown, 

 Massachusetts. The site is located at 44 Charles River Avenue, 

 south of the now discontinued Waldo Street and immediately east 

 of the Charlestown Bridge, as shown on Figure 1, Project 

 Locus. The site is currently occupied by a concrete block 

 warehouse on shore, a one story wood frame warehouse 

 constructed on a pier out into Boston Harbor and adjacent paved 

 parking areas. A brick wall divides the parking area 

 delineating the eastern property line of the Tudor Wharf parcel, 



Current development plans, as presented on four drawings by 

 Childs Bertman Tseckares & Casendino, Inc. (CBT) in March 1988, 

 propose the construction of an on-shore six-story office 

 structure containing three levels of underground parking. It 

 is our understanding that four levels of below grade parking 

 are also being considered. In addition, the development will 

 include a five-story commercial and office building to be built 

 over the pier into Boston Harbor, replacing the existing wood 

 frame warehouse structure. An approximate plan of the proposed 

 site development, superimposed over existing site features, is 

 included as Figure 2. 



1-02. PURPOSE AND SCOPE 



The objective of this study was to complete initial 

 explorations to investigate subsurface soil and groundwater 

 conditions at the proposed Tudor Wharf site and to develop 

 preliminary recommendations regarding foundation support and 

 construction of proposed structures. Recommendations on other 

 geotechnical aspects of the project, as well as issues 

 addressing waterfront development, are also included. 



To achieve these objectives, the scope of our work included: 



o A program of three test borings completed on land and one 

 test boring completed over water to define subsurface soil 

 and groundwater conditions. 



o Field monitoring of the borings and installation of three 

 groundwater observation wells. 



o Preparation of a subsurface exploration location plan and 

 two subsurface profiles. 



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