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Chapter 4 - Best Management- Practices for- Erasion: and.-Sediment. Control . <br /> 4,30 TEMPORARY SLOPE DRAIN <br /> .. (ES BMP 1 , 30) <br /> Definition <br /> A flexible tubing or conduit extending from the top to the bottom of a cut or fill slope . <br /> " Purpose <br /> To temporarily convey concentrated stormwater runoff safely down the face of a cut or fill <br /> slope without causing erosion problems on or below the slope. <br /> Conditions Where Practice Applies <br /> On cut or fill slopes before permanent stormwater drainage structures are installed . <br /> ' OP Planning Considerations <br /> There is often a significant lag between the time a cut or fill slope is completed and the <br /> time a permanent drainage system can be installed . During this period , the slope is usually <br /> not stabilized and is particularly vulnerable to erosion . This situation also occurs on slope <br /> construction which is temporarily delayed before final grade is reached . Temporary slope <br /> r drains can provide valuable protection of exposed slopes until permanent drainage <br /> structures can be installed . <br /> 400Earthen Dike <br /> Corrugated ' Metal (compacted ) <br /> Extension Collar rA <br /> Waterproof Seal 111. . - —.--r- t <br /> NO / { 24 : 1 . D <br /> D+6" <br /> Provide Outlet .:= !II`-- 11 -- - =ilii <br /> �r Protection Standard Flared <br /> End Section - <br /> 610 <br /> t — 11 Ittrllp__ . I� <br /> Section <br /> rr <br /> Earthen Dike( Compacted ) 3'1 <br /> rr —r D+6 „ <br /> a' <br /> is ti <br /> ut � Ott - uta iii cin= <br /> �+ <br /> Nit It 11 IIS - 1111 <br /> Section A-A <br /> Plate 4.30a Temporary Slope Drain <br /> Source: Virginia SWCC <br /> r <br />