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No. 4-Control Structure/Flow Restrictor <br /> �c e .'m } ,. �z .� Results Expected <br /> 5�pot� '14 q,R, 0�' �''`�s Y z� a i€�d' 4 'fk `-`� ��{; ,{{ a2,: s eF Y A u3 s <br /> a, z & is a � NEE ti 9ak,. <br /> . .•-,'•'. �s:�:.:, ' 'EA•€ '?E A ss S"�, � ' '� I�.Au���G'�`�'�t'� �. .,��£ �3 S� s1 �>�. <br /> General Trash and Debris Material exceeds 25%of sump depth or 1 Control structure <br /> (Includes Sediment) foot below orifice plate. orifice is not blocked. <br /> All trash and debris <br /> removed. <br /> Structural Damage Structure is not securely attached to Structure securely <br /> manhole wall. attached to wall and <br /> outlet pipe. <br /> Structure is not in upright position(allow up Structure in correct <br /> to 10%from plumb). position. <br /> Connections to outlet pipe are not watertight Connections to outlet <br /> and show signs of rust. pipe are water tight; <br /> structure repaired or <br /> replaced and works <br /> as designed. <br /> Any holes--other than designed holes—in the Structure has no <br /> structure. holes other than <br /> designed holes. <br /> Cleanout Gate Damaged or Missing Cleanout gate is not watertight or is missing. Gate is watertight <br /> and works as <br /> designed. <br /> Gate cannot be moved up and down by one Gate moves up and <br /> maintenance person. down easily and is <br /> watertight. <br /> Chain/rod leading to gate is missing or Chain is in place and <br /> damaged. works as designed. <br /> Gate is rusted over 50%of its surface area. Gate is repaired or <br /> replaced to meet <br /> design standards. <br /> Orifice Plate Damaged or Missing Control device is not working properly due to Plate is in place and <br /> missing, out of place, or bent orifice plate. works as designed. <br /> Obstructions Any trash, debris, sediment, or vegetation Plate is free of all <br /> blocking the plate. obstructions and <br /> works as designed. <br /> Overflow Pipe Obstructions Any trash or debris blocking (or having the Pipe is free of all <br /> potential of blocking)the overflow pipe. obstructions and <br /> works as designed. <br /> Manhole See"Closed See"Closed Detention Systems" (No. 3). See"Closed <br /> Detention Systems" Detention Systems" <br /> (No. 3). (No. 3). <br /> Catch Basin See"Catch Basins" See"Catch Basins" (No. 5). See"Catch Basins" <br /> (No. 5). (No. 5). <br /> February 2005 Volume V—Runoff Treatment BMPs 4-35 <br />