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Z�rnng Prnpertp 94-12-10 <br /> Erere(t, WnsGinglon <br /> In planning .he site grading and location for the proposed residence, grades should <br /> be set so tliat water does not collect adjacent to the residence. [nstead, the ground <br /> should be sloped downward away from the structure so that runoff may be carried to <br /> a suitable discharge point. The base of all foundations and retaining walls should be <br /> protected from seepage or ground water by perforated pipe at the base elevation. <br /> The perforated drain pipe should be totally surrounded by at least 6 inches of <br /> washed gravel. this foundation drain system should be installed to discharge via <br /> tightline by gravity to a suitable discharge point at the base of the site slope. Roof <br /> and surface runoff should not discharge into the footing drain system. Instead, a <br /> separate tightlined drain system should be used and directed away from the <br /> structure. We recommend that all drainage systems be tight-lined down to the curb <br /> elevation. <br /> 4.8 Cuts and Excavntions <br /> All eacavations should conforni to applicable sections of the Washington State <br /> laws, WAC 296-155-650,655,660 and 665. For this project, all temporary <br /> e�:cavations and/or slopes less than four (4) feet in depth in undistwbed native soil <br /> will stand in near vertical cuts for short periods of time. Any excavations of cuts in <br /> temporary excavations and/or slopes greater than four (4) feet in depth should be <br /> laid back to a maximum slope of 1 H:l V unless physically retained by use of a <br /> di�ing box or other suitable metliods. All permanently exposed slopes should be <br /> protected by a dense ground cover or grass. <br /> 17 GES, /nc. <br />