1001 N BROADWAY Geotech Report 2018-01-02 MF Import

.. � : J-736 Page 4 Subsurface Conditions Subsurface conditions as disclosed by the 14 test pit ex- plorations.indicate soils ranging from very dense glaci.al T1LL to very stiff clayey SILTS. Three basic soil types can be assumed to represent subsurface conditions. These soil types are d�scribed i� the following pazagraphs and are generalized representations of the individual test pit logs presented in Appendix A. FILL: Loose to medium dense, generally wet or saturated, gray- brown to black, silty, gravelly, SAND. The FILL was < encountered throughout most of the southern two thirds of the site, was generally surficial (ranging in depths of 1.0 to 2.0 feet) and was relatively free of organic and other debris except for moderate fine roots. However, FI�L in the area of TP-7 was disclosed to a depth of about seven feet and contained abundant organic, wood, steel, concrete and brick debris. These FILL soils should be distinguished from the mounded rubble piles that exist across the western one-third of the site as described previously under "Site Conditions", SILTS: Very stiff to hard, wet, mottled gray to tan to gray, very clayey SILTS, SILTS, and sandy SILTS. These SILT soils were generally encoim tered within the lower ele- vations on the north and northeastern portions of the site. Test pits within this area disclosed these SILT soils from about 2.0 to 11,5 feeC below the ground sur- face. • GLACIAL TILL: Very dense, moist or w�t, gray, silty, gravelly SAND with occasioaal cobbles. GLACIAL TILL generall� was ubse.rved to have a 1 to 3 foot thick Tveathered zone which was generally medium dense to dense, wet, mottled