1600 W MARINE VIEW DR 2016-01-01 MF Import

' , 1 1 ' 1 1 1 , ' 1 � , 1 ' 1 ' July 30, 1997 HWA Project No. 96028 2.0 LITERATURE REVIEW To gain an overview of project conditions and to aid in ideotifying potaatial geotechoical impacts on the design and/or const�uction of the proposed Fublic accese pier ud maon�ge facility, we reviewed available geotechnical and gcological data tbr the area in the vicimty of the project site. The literature reviewed included geotechnical atudiea for the Norton Avenue Tenninal and Pioneer Marine Plaza projxts; pile driving records for 22 axagoml precasi concrete piles that were recendy installed just south of the propoud public access pier and moorage fualiry; and a published geologic map descdbing the wrficial so�7s in the vicinity of the proposed site. A complete Gsting of the documents reviewed is provided below (see Referances Section). 3.0 FIELD AND LABORATORY INVESTIGATIONS 3.1 FiELD E7�LORATION On April 11 and 12, 1996, HWA personnel conducted a site reconnaissance and monitored the drilling and sampling of two onshoro exploratory borings (BH-1 and BH-2). The borings were advanced to depths ranging from �bout 61'fs to 66'Fi feet bdow the existing ground surface nsing a tn►ck-mounted drill cig equipped with a cortinuous 8ight hollow stem auger. The exploratory bocings wero located in the Seld by uping distancea from adsting site features. The approximate locariona of the explontioaa pvfotmed are shown on the Site Plan, Figure 2. The exploratory borings were monitored and logged by a geotechnical enginar &om HWA Soil samples were obtained at selected intervals and talcen to our laboratory for further examination and testing. Field exploration methods are descn'bed, and logs of the borings are presented in Appendix A. Due to cost considerations, over-water borings were not performed. As a rewlt, the offshore subsurface conditions assumed herein are based on an extrapolation of aubaurface data from the borings we performed onshore and geotechnical work wmpleted by others in the viciniry of the project site. Since over-water borings were not perfortned, aome additional uncertainty about offshore subsurface condirions exists. This may rault in a greater potential for encountering unanticipated subsurface conditions during conshuction (see Section 6.0). 3.2 LABORATORY'I�STING Laboratory tests were conducted on selected soil samples to characterize certain engineering (physical) properties of the on-site soils. Laboratory testing included 96078RF.DOC Hoxa WEsrB Assocures, Ir�c.