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KING COUN"C1', N'ASI IING7'ON, SURI�ACF WA7'GR DESIGN MANUAL <br /> Catch 13asin Accnu.�.da�ion mcJia of thc insc�t and�or unit. mcdia nnJ i�s unit. <br /> � -+��...L a��d Ucbris "I'msh anJ dcbris accumulntGe on inscrt unil Tnsl�;mJ Jcbns rcmovcd frum <br /> :�ccumnlatiun crr.i�ing n blockagdre;iriction. inscn unit. Runoff Gccly Ilmc; <br /> intn calch basin. <br /> Inspcciiun Insp�rlion uf mcdin inscn is rcquircJ. t?Illucn�w;ticr Goin mcdia inscrt is <br /> G�t o(oils and has no visihlc <br /> shccn. <br /> SlcJia lnscrt-1V�ilcr Calch basin inscn is satur.UcJ wilh u:ncr. Rcmocc anJ rcpincc meJia insrn. <br /> S:uumlcd �chich no longcr hac thc c;ipacily�o abwrb. <br /> AlcJia lnscrt-Oil Mcdio oil s;ilurntcJ duc�o petrolcum spili�hal Rcmucc and rcpl;icc mcJia inscn. <br /> ti:�turalcJ dnins in�u r.i�ch basin. <br /> Gcncml Rcgular inlcn•;il rcplaccmcN Juc to�ypic;il Iicmucc:mJ repL•�cc mcJia at <br /> avcragc lifc of mcJia inscrl pioJucl. rcgular inlcn'als,Jc�xnJing un <br /> inscn prnJuct. <br /> � <br /> � <br /> V� \ <br /> AP.16d ��/ <br />