3121 8TH ST AB 2016-01-01 MF Import

June l, 200R Duplex 13uilding L&A .lob No. AA055 Pagc 12 on critical arcas, mitigation of impacis on critical arcas, itnpact of utilit�� installation and roudway construction on geologically hazardous areas, etc. The subject site is underlain by very-dense fresh till soils of high shear strength with high resistance against slope fuilures. "rherefore, geological restraints of the site �vhich may impact the stability of the adjacent steep slope (lanking thc east side of the site are either non-existent or can be minimized to an acceptable level of risk if the recommendations in this report are fiilly implemented and observed. The vegetation cover on this steep slope should be preserved and not to be disturbed. Are�s devoid of vegetation cover due to construction �etivities should bc seeded and re-vegeLated as soor. as possible. We understand tha� t�rading of building pad and driveway and building lootprint excavation for the development of thc duplex b!:ilding will be achieved with ecnventional earthwork equipment. If the mcommendations in this report are followed during graJing work, the construction tnethod and techniqu� should have little impact on the stability oCthe adjacent stcep slope. Since the driveway and utility lines will approach the duplex from the street sidc and uphill side away Gom the adjaccnt steep slope, driveway construction and utility installation sh.�uld also have minimal impact on the stability of the adjacent sleep slope. According to the design plans of the duplex building, this building is to be set back about 10 to 2� fect from the crest of the adjacent stcep slope of 40% and more grade. It is our opinion that this selback will be adequate for the duolex building to maintain long-term stability, provided that: 1) the tboting loundations of the building is embedded at least 6 inches into the very-dense fresh till soils and, 2) the footing fomidations are constructed in accordance with the recommendations under the BUILDING POUNDATIONS section in this report. LIU & ASSOCIAT�S, INC.