Laserfiche WebLink
y � 0 � Ya e Four <br /> o s <br /> �y� k <br /> y Field Investigations <br /> our field investigation of the site was conducted between 11- <br /> �v 12 and 12-1?-1991, and consisted of the following works <br /> W Fl <br /> yt <br /> 1) A brief regional investigation of the site and vicinity <br /> ty was conducted to determine soils and drainage conditions <br /> Hg as exposed. , <br /> z r 2) A transit, tape and stadia baseline survey was conducted <br /> y to establish relevant locations and elevations. These are <br /> H y shown on the attached site plan showing test pit locationf . <br /> Cco i <br /> y 3) Topographic contours were established at five foot inter- <br /> vals, using tape, stadia rod and hand level methods. <br /> Pa 0L 4) Three test pits were dug and logged at relevant locations <br /> along the edge of the embankment, and post hole digger an <br /> probe nethods were used to determine soils and density <br /> a along the base of the slope. <br /> 5) Additional investigation of site history was performed, <br /> N by obtaining compaction field reports, survey data and <br /> a preliminary grading plan. Relevant portions of this <br /> material has been incorporated into this report. <br /> 1_�) Site Geologye <br /> s <br /> Test pits, cut banks for roadway and adjacent exposures indic- <br /> ate the following depositional sequencer <br /> �) 1) The site appears to be underlain by a moderately compact <br /> to compact sequence of outwash loamy sand and gravel. <br /> 2) Following the deposition of the sand and gravel unit, a <br /> glacial advnnce depo3ited a layer of lodgement till and <br /> ablation. moraine (as exposed in the cut to the south of <br /> q the parcels) . <br /> 1 O�j 3) Following deglaciation, crustal rebound raised this 3trat <br /> for the current erosional cycle. <br /> tl' <br /> 4) The sites were graded, and structural fill was placed. <br /> !'` The lack of oxidation and weathered clasts in the encountered <br /> glacial materials indicate that they were laid down during th <br /> vashon Stado of the Fraser Glaciation. <br /> l � Slope Stabilityi <br /> \\\\ No unstable stratigraphic relationships, springs or seeps vier <br /> encountered along the sideslope adjacent to the site. There <br /> is some potential for movement of a shallow mantle of soil <br /> EAATH ANALYS/S <br /> :1 <br />