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CITY OF EVERETT STORMWAIeK MANAGEMENTMANUAL <br /> . . ,: �� �ifr:� i = , <br /> � . y._i_ � :' t' 1� ' . , . -.i� ... <br /> ' 4-v�� � '. � ti �' � .y �,, i i f, � '..-: Il�mw�rR�'�G[m4�All�,':��OII�'. <br /> �F.r!a!!�r ;>:'�� i s`� "� �' � 'MoeNm'. �' caitllYoiii'�eci�.elF.�er ,,�'�� rn.e,SKod�dE,Q+t;s , <br /> g Ponding OveAlowl Overlbw spillweY is partielly or lully plugged RemovelGispose <br /> Area emergency spillway with sediment or debris. <br /> 8 Ponding Overflow/ NaGve soil is a�osed or other signs ol erosion Repair erosion and stabilize suAace ol <br /> Area emergency spillway damage are present. spillway <br /> g Ponding Overflowlemergency Spiilway armement is missing. Replact�artnamenl <br /> Area spillway <br /> B Ponding Bioretention soil Weter remains in the basin 4E hours or longer Ensure thet under drain(if present)is nol <br /> Area aRer the end of a stortn. Gogged.if necessary,clear under drain. If <br /> this is not fhe problem,lhe bioreten6on soil <br /> is likely clogged.Remove upper 2 to 3 <br /> inches of soil and replace with imported <br /> bioretention soil.Idantity sources of <br /> Gogfling and corred. <br /> B Vegetation BoBom swale Less than BO�o of swale bottom is wvered with Plant additional vegetation.Ideally,planting <br /> vegetafion healMy wetland vegehation. should be pedortned in ihe fall or wmter. <br /> @ VegetaUon Upland alope Less than 70�e ol upland slopes are wvered Plant additional veyetation. Ideally, planting <br /> vegetetion with healthy vegetadon. should be performed in the lall or winler. <br /> A Vegetafion Trees and shr�bs Lerge trees and shrubs inteAere with operation Prvne or remove large trees and shrubs <br /> of the basin or access for maintenance. <br /> A Vegetalion Trces end shr�bs Standing dead vegetation is present. Remave stending tlead veBefation when <br /> covering greater then 10%of basin area. <br /> Replace dead vegetation annually or <br /> immedialely if necessary to conirol erosion <br /> (e.g.,on a steep slope). <br /> A Vegetation Mulch Bare spots(wilhout much cover)are presenl or Replenish mulch to cover bare spots and <br /> mulch covers less then 3 inches deep ior augmenl to minimum depth. <br /> . compost or 4 inches deep tor course woody <br /> mulch. <br /> As needed Vegetation Clippings Grass or other vegetation clippings eccum�late Remove dippings <br /> to 2 inches or greafer in deplh. <br /> Appendices <br /> F-56 <br />