2026 GRAND AVE 2016-01-01 MF Import

1` 1 • . f Subsur{ace Ezploration and � ?036 GrandArenue Geotechnica!Er.gineerirtg Report i 6�ererr R'ashinqmn Projecr and Site Conditiou ; i The L-shaped proper[y is roughly 190 feet east-west by 100 feet north-south. The topography of [he propercy gently slopes down towards the west within 100 feet of Grand Avenue and then slopes steeply down towards the �vest. Steep slopes on the west end of the property were estimated visualty at 60 to 80 percent inciination, decreasing towards the west. Slope height was estimated at 60 feet with the [oe of[he slope located near Marine View Drive. As currendy proposed, the existing homes will be demolished. A new three-story wood- framed condominium with a concrete basement garage will be constructed. Excavation cuts along the eas[ end of the building will be approximately 9 feet below current grade and approximately 15 feet west of the side�valk of Grand Avenue. The west end of the building is + proposed approximately 9 feet from the top of the west-facing steep slope. � i 3.0 SUBSURFACE EXPLORATION Our field study included completing geo:echnical exploration borings and performing geologic studies to gain subsarface information abc,ut the site. The various rypes of sediments, as well as the depths where characteristics of the sediments changed, aze indicated on the exploration logs presented in the Appendix. The depths indicated on the logs where conditions changed may represent gradatior.al variations between sediment rypes. The conclusions and recommendations presen[ed in this report are based on the three exploration borines completed for this study. The number, locations, and depths of the explorations were completed within site and budgetary constraints. Because of the nature of exploratory work belo�v ground, extrapolation of subsurface conditions between field explora�ions is necessary. It should be no[ed that differing subsurface conditions may sometimes be present due to thc random nature of deposition and the alteration of topography by past grading and/or filling. The nacure and extent of any variations between the field explorations may not become fully evident until construction. If variations are ouserved at that time, it may be necessary to re-evaluate specific recommendations in this report and make appropriate �hanges. 3.1 Exploration 13urin�_s The exploration borings were completed on �tay 17, 2000, by advancine a hollow-stem auger �vith a limited access vack-mounted drill rig under subcontract to our nrm. During the drilling process, samples were obtained at cenerally ?'/�- or 5-foot de�th intervals. The borings were continuously observed and loeeed b� a geotechnical engineer from our firm. The exploration' logs presen[ed in the Appendix are based on the field loes, drilling action, and inspection of thc samples secured. liatc I9. 'lX)0 EXH I B IT #� ASSOCL4TF.D E,IRTti SCIENCES, INC. ;,s m�-n�Ea�a��ci -�n.o�,��e.00-u_r: Page 2 Pr1G��F �y