1136 GRAND AVE A&B 2016-01-01 MF Import

t . April 23, 2007 Mr. Scott Anderson L&A Job No. 6A 126 Page 12 system should be tighdincd, separately from thc roof and surface stortnwater drain systems, to discharge into a nearby storm scwcr. Surface Drainage Water should not be allowed to stand in any arcas �vhere footings, sl�bs, or pa��ement is to be constructed. Pinish ground surface should bc graded to }low away from the duplex building. We recommend the finish ground be sloped at a gradient of 3 percent minimum for a distance of at least 10 feet away from thc house, cxcept in the areas to be paved. Clcanouts Sufficient numbcr of cleanouts at strategic locations should be provided for the underground drain linc systems, Thc undcrground dr.tin linc systems should be maintained periodically to prevcnt clogging. Building Setback "rhe purposc of building sctback from the top or toe or an overly steep portion of a slope is to establish � safe buffer such that if a slope failure should occur the stability of the structure can be maintained and damages to thc swcturc minimized. Pactors affecting required setback of the proposed duplex building from thc crest of adj�cent steep slope include: geological constraints (such as soil and hydrological conditions) of the site, hazard from development to subject property and surrounding propertics/right-of-ways, impact of construction method and technique on critical arcas, mitigation of impacts on critical areas, impact of utility installation and roadway construction on geologically hazarJous arcas, etc. LlU & ASSOCIATES, INC.