4914 23RD AVE W 2016-01-01 MF Import

August 27 , 1980 Project No. 4080 Page two . Existing Conditions Presently, the investigated site is undeveloped; howevex• residen- tial development occurs around the are.3. The site appears to have been cleared and regraded to a certain extent by past site development activities . Topographically, the site slopes generally toward the northwest, down to an existing swale along the western property line. The slope is irregular, �nd terraced in manner, indicating a change from the normal even slope condition. These areas wer� tested axid found to consist of fill material, probably placed during earlier site development. General soils conditions found within the site consist of a basal strata of grey-brown, fracture3 fine silty sand/ssndy silt wh`�ch is expected to underly �ihe entire site. This material is quite stiff (dense) in nature, particularly with depth. A weathered portion of the basal soils overlies , and is generaJ.ly less than li feet thick. . The basal soils are expected to be relatively thick and should be encountered in most excavations. Some inter- beds of. brown ' clean' sand were observed within the basal strata, indicating that a change of soil type may� be encountered with depth. Artificial fill was encountered overlying the natural soils within the site area, particularly along the slope. This material con- sists cf intermixed silt , sand, some gravel and organics . The organics are primarily logs , stumps , roots and such, p: obably placed when the site was cleared. Organic topsoil is encountered primarily along the steeper pox�tion of the slope, below the area where artificial fill ends zlong the slope. Groundwater was not encountered; however, the presence of the interbedded sand lenses could indicate some gr•oundwater flow, particularly during the wetter months . Surface runoff conditions are also expected due to the relative impermeab�e nature of the bas21 soils.