Laserfiche WebLink
Chapter 4 - Best Management Practices for Erosion and Sediment Control <br /> r <br /> Excavate. if NecessaM dor Storage <br /> r!a w <br /> rr. , <br /> .. Dike = ; ; " +. f, "� 4; ; :. .. , . .y <br /> � • Flow ,!+ • • . r . .. <br /> Flow <br /> Vic 19 <br /> - •.,�^ � . • •�,.r,J>• � . • p„` , - EArmor arth • '-� !S• :' " ` •• "�1;A;/ <br /> , ; Embankment _ . �• <br /> 4' To Width <br /> .09 <br /> .�► % W . <br /> ' ` 0 Flow P e :';' <br /> r. c i ' • � I , too <br /> 2: 1 Slopes <br /> top -7 <br /> aw r <br /> Dike if Requirsd to Divert Water to Trap <br /> 2: 1 or Flatter ` <br /> -...,_ Will `1 <br /> �4 . o <br /> Width (ft.) <br /> .r a x Drainage Area {Ac. ) <br /> Sectior. A-A Outlet Section <br /> Excavated Earth Outlet SedimentTrep Embankment Earth Outlet Sediment Trap <br /> dw <br /> Construction Specifications <br /> 1 , Area under embankment shall be cleared , grubbed and stripped of any vegetation and root mat. Thi <br /> .r pcc: arca sF,all be cleared . <br /> 2, The fill material for the embankment shall be free of roots or other woody vegetation as well as over- <br /> sized stones , rocks , orgart<ic rnaterlal, or other objectionable malerlal. The embankment shall be <br /> compacted by traversing with equipment while it is being consiructed. <br /> dw 3, Sediment shall be removed and trap restored to its original dimensions when the sediment has <br /> accumulated to 1/2 the design depth of the trap. Removed sediment shall be deposited in a suitable <br /> area and in such a rnanner that it wit not arode, <br /> 4. The structure shall be Inspected after each rain and repairs made as needed, <br /> "s" 5. Construction operations shall be carried out in such a manner that erosion and water pollution are <br /> minimi2ed. <br /> 8_ Tile structure shall be removed and area stabilized when the drainago area has been properly stabilized. <br /> 7. All cut and fill slopes shall be 2 : 1 or flatter. <br /> 'n 81 Outlet crest elevation shall be at least one foot below the tcp of the embankment. <br /> r <br /> rr <br /> Plate 4.25a Earth Outlet Sediment Trap <br /> Source: NRCS <br /> Design Criteria <br /> 4-69 <br />