2222 EVERETT AVE 2016-01-01 MF Import

structure are pl:�nnrd, the conclusions and recommendations containeJ in this report should be reviewed and modifie;d, or verified, as necessary. PROJECT AND SITE DESCRIPTION The site has been razed of the buildings that were present during our previous field smdy conducted for our May 2001 report. Since the publication of that report, the design team has been discussing the most appropriate foundation type, considering the existing surficial fill soils and the proximity of the vibration-sensitive buiWing. As a result of these concerns, it has been decided to support a portion of the new building on an augercast pile foundation system. The augercast piles would be used adjacent to the vibration-sensitive structure on d�e neighboring properry to the east. The remainder of the building would be supported on spread footings either extending down the very stiff silt or founded on structural fill placed, as described in our previous report. Specific recommendations for the augercast piles arc presented later in diis report. SUBSURFACE EYPLORA'CION Our current field study included excavating three additional explur.uion pits (L'•P-8, EP-9, and EP-10) to gain furdicr inforniation about the site in areas Uiat �vere inaccessibic during our previous smdy. The various rypes of sediments, as well as the depths where characteristics of � the sediments chan;�ed, are indicated on the exploration logs attached to this report. The depths indicated on the logs where conditions changed may represent gradational variations between sedimcnt types in the field. Our explorations were approximately located in the field by measuring from`F:nown site features shown on the site plan referenced abovc. The condusions and recommendations presented in this report are base� on the three exploration pits completed for this study and the seven exploration pits completed for our May 2001 report. 1'he number, location, and depth of the explorations were completed within site and budgetary constraints. Because of the nature of exploratory work below ground, extrapolation of subsurface conditions between field explorations is necessary. It should be noted that differing subsurface conditions might sometimes be prescnt duc to thc random nature of deposition and the alteration of topography by past grading and/or filling. The nature and extent of any variations bet�vicen the field explorations may not become fully evident until construction. If variations are observed at that time, it may be neccssary to re-evaluare specific recommendati�ns in this report and mal:e appropriate changes. SUBSURFACE CONDITIONS Subsurface conditions at die project site �vere inferred from the field explorations accomplished / for this study and our previous study, visual reconnaissance of the site, and review of iapplicable geologic literature. As shown on the field logs, the exploration pits generally 2 3�