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r <br /> r <br /> Drainage Facility <br /> � Maintenance Requirements <br /> � <br /> � Maintenance Item Required / Design Condition <br /> ' Gates neral <br /> s Gates and locking devices are in place <br /> ' . Hinges are intact and gate opens frcely <br /> . Gate is aligned and vertical <br /> ' Ponds and Basins General . <br /> • Trssh and debris cleared from the site � <br /> • Poisonous vegetation is removed <br /> ' • No contaminants pcesent other tl�an a surFacc SLn <br /> • No sediment accumuladons that exceed 20% of the ponds <br /> storage volume <br /> � Sidc Slooes <br /> � . Stable slope areas with no actively eroding areas greater than <br /> hvo(2)inches dcep <br /> � Dikes or Bertns <br /> • Repair of dikes and bertns that have settled more than four(4) <br /> inches bclow design elevation <br /> . Removal of waody vegetation frnm built-up dikes and bertns <br /> � • No rodent damage or hol� which affect the ability of the <br /> facility to retain��ater <br /> , Emeraencv Over9ow Sp' wavs <br /> • Design quantiry and thiclmess of rock is present <br /> � Vegetation <br /> Wetponds . � � where nutrient wntrol is a concem, harvest emergent <br /> � wettand vegetation at least once annually, in the fall <br /> Sediment Accumulation Areas <br /> � . Removal of scdiment that exceeds 10%of the designed depth <br /> 1 Solectron-Seau�av Center i:IProjecr11934010/IwordidrainaAe.doc <br /> IN•&ypQ��f� Octoberl7, /997/Page3 <br />