3723 RUCKER AVE Geotech Report 2018-01-02 MF Import

FIELA E%PIARATION AND LABORATORY TESTING Our field explaration was performed on October 9, 1985. Subsurface conditiona in the area of the proposed building were explored by excavating four test pits xith a backhoe to a maximum depth of 14.2 feet below the existing ground surface. The locations of the test pits were approximately determined by measnrements from knovn pointa on the property aurvey. Elevations of the test pi[s were determined by interpolation from elevations shown cn the site survey. These locations are shown on the Site Plan, Figure 1. The field exploretion was continuously monitored by an engineer�.ng geologist who clessified the soil condition:+ encountered, maintained a log oE each test pit, obtained representative samples, and observed pertinent site feetures. All samples were visually class:fied in accordance with the Unified Soil Classificetion System, which is Fresented on Figure 2. Logs of the test pits are presented with this report on Figures 3 through 4. ThesP logs repreaent our interpretation of the field logs and the results of the lab�:atory exemination and tests performed on field samples. Several representative soil semples obtained from the tcst pits were plbced in closed containers and re[urned to our laboratory for further examination and testing. Moiature contents were determined for all Chese samples. The resulta of these teats, es well as the soil cicisaificatione are shown �.-. the loga included with this repor[. SOIL CONDITIONS 7'he subsurface conditions beneath the proposed buildinv were explored b�r excavating 4 test pits around the building area. In general, all of the subsoils noted in the test pits were uniform. J The 6uilding area is underlain by about 11 to 13.5 feet of loose uncontrolled fill materiels. These fills consiat of generally silty sands with varying gravel content along with localized debris. Some cleaner pit run sands were noted as fill, in the pits excavated closer to the old restaurant and paving J area. Occasional wood, bricks, roots and wire were observed in the fill in each of the pits. The fill was generally in a loose candition nnd some sloughing of the test pit walls was noted in all the pits. A large piece of J concrete debris or a concrete slab was noted in Test Pit TP-2 at a depth of 7 feet. The recently placed f:lls of up to 4 feet in depth were evidently placed over much older fill materiels in a Uuried swale area. J The fills overlie an organic layer of topsoil, fiils and sone debris observed near the base of the test pits, overlying apparent native soils. The topsoil/fill layer is about 1 to 1.5 feet thick in some areas. The 1 underlying firmer native soils �onsist of clean to silty sands in a medium � dense condition. Project No. T-233, Page 3 �