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CITY OF EVERETf STORMWAIER MAN.4GEMENT MANUAL <br /> Energy Diesipaters <br /> D�te <br /> Dnlnage <br /> Syatsm Malnten�nce Activities and Conditions <br /> Frequency Feature � � � ✓ Problem Conditlona to Check Far That Should Exist <br /> External: <br /> M Rock Pad Missing or Moved Only one layer oi rodc exists above native soi�in Rock pad replaced to design standards. <br /> Rock area 5 square feet or iarger,or any ezposure of <br /> native aoil. <br /> M Rock Pad Erosion Soil erosion in or edjacent to rock pad. Rock pad replaced to dasign standarJs. <br /> M Dispersion Pipe Plugged with Accumulated sediment that exceeds 20 percent Pipe cleanedlflushed so that il matches <br /> 1 iench Sediment of the design depth. desiqn. <br /> M Dispersion Not Discharging Ysual evidence o(water discharging at Trench redesigned or rebuilt to stantlards. <br /> Trench Water Propedy concentrated points along trench(normal <br /> condition is a"sheet flov!'ol water along trench). <br /> Intent is to prevent erosion damage. <br /> M Dispersion Perforetions Over one-half of perforations in pipe are plugged PeAoreted pipe cleaned or replacetl. <br /> Trench PIuB9ed witti debris and sedimenl. <br /> M Dispersion Water Flows Out Meintenance person observes or receives Facility rebuilt or redesigned to standards. <br /> Trench Top ot"DisUibutot' uedihle repart o(water flowing out dunng any <br /> Catch Basin. storm less than ihe design stortn or its causing <br /> or appears IiHely to cause damage. <br /> M Dispersion Receiving Area Water in r�ceiving area is causing or has No danser of landslides. <br /> Trench Over-Saturated potential of cuusing landslida problems. <br /> Internaf <br /> M Manholel Wom or Damaged Structure dissipating flow deteriorates to one• Structure replaced to design standards. <br /> Chamber PosL Baffle� , Side half ot originel size or any concentrated wom <br /> of Chamber spot ezceeciing 1 square foot which would make <br /> strudure unsound <br /> Appendices <br /> F-18 <br />